Under Division by e (in Just Math) Posted on 2020-03-25 (7 Comments) |

| Surprising consequence by Jer (2020-03-29 19:10:39) |

| re: Guess not proof by Jer (2020-03-27 11:38:49) |

Under Tan2Mid (in Geometry) Posted on 2020-03-11 (1 Comments) |

| Solution by Jer (2020-03-14 22:48:23) |

Under 3 equilateral triangles in a rectangle (in Geometry) Posted on 2020-02-28 (2 Comments) |

| re: My attempt by Jer (2020-03-14 17:39:47) |

Under Reflection Triangle (in Shapes) Posted on 2020-01-24 (5 Comments) |

| re(4): What am I missing? -> The Kosnita Point by Jer (2020-01-27 17:14:05) |

Under Find the Holes (in Logic) Posted on 2020-01-15 (1 Comments) |

| Child's play - solution by Jer (2020-01-19 17:13:34) |

Under PYHIYP #2 (in Just Math) Posted on 2020-01-13 (5 Comments) |

| my solution by Jer (2020-01-17 22:12:03) |

Under Two players, three pots (in Games) Posted on 2020-01-03 (4 Comments) |

| re: Many pots by Jer (2020-01-06 15:09:28) |

Under Phrase and misconception (in Cryptography) Posted on 2020-01-01 (3 Comments) |

| re: How we ID'ed that quote so easily? by Jer (2020-01-02 17:14:10) |

Under PYHIYP #1 (in Numbers) Posted on 2019-12-09 (4 Comments) |

| Spoiler for iii. by Jer (2019-12-10 09:27:13) |

Under SOD cubed equals Sum of Squares of SODs (in Numbers) Posted on 2019-11-20 (3 Comments) |

| solution? by Jer (2019-11-20 13:12:58) |

Under Fancy quadrilateral (in Just Math) Posted on 2019-10-25 (4 Comments) |

| re(2): the right starting point? - kite solution by Jer (2019-10-26 13:49:50) |

Under Interval Guessing (in General) Posted on 2019-10-21 (10 Comments) |

| A note by Jer (2019-10-26 13:59:23) |

Under The Midpoint Locus (in General) Posted on 2019-10-11 (2 Comments) |

| Solution by Jer (2019-10-16 12:39:46) |

Under Reduced to single digit (in Numbers) Posted on 2019-09-06 (14 Comments) |

| Another line of attack by Jer (2019-09-10 11:20:41) |

| Thoughts by Jer (2019-09-10 11:13:47) |

Under Don't assume you know this concave pentagon (in Geometry) Posted on 2019-09-01 (6 Comments) |

| Two solutions by Jer (2019-09-03 08:15:00) |

Under 5 circles in a square part 1 (in Geometry) Posted on 2019-08-28 (5 Comments) |

| re: q. and possible soln - corrections and clarifications by Jer (2019-08-28 21:17:17) |

Under The Five Touching Spheres (in Shapes) Posted on 2019-08-25 (10 Comments) |

| Solution (I'd like confirmation) by Jer (2019-08-26 19:11:58) |

Under Talwalker trouble (in Geometry) Posted on 2019-08-24 (3 Comments) |

| One way by Jer (2019-08-24 15:23:06) |

Under A Triangle in a Square (in Geometry) Posted on 2019-08-21 (6 Comments) |

| general solution by Jer (2019-08-21 20:30:18) |

Under Irrational Distance/Rational Areas (in Just Math) Posted on 2019-08-19 (4 Comments) |

| weak solution by Jer (2019-08-19 16:26:52) |

Under Peoples Day (in Just Math) Posted on 2019-08-12 (3 Comments) |

| Solution by Jer (2019-08-12 13:36:04) |

Under Listing the cardinal numbersâ€™ names (in Word Problems) Posted on 2019-07-30 (2 Comments) |

| Maybe by Jer (2019-07-30 08:52:04) |

Under Tangent by Transformation (in Just Math) Posted on 2019-07-25 (2 Comments) |

| Solution by Jer (2019-07-25 09:16:35) |

Under Tic tac toe variation (in Logic) Posted on 2019-07-22 (1 Comments) |

| Not D1 solution by Jer (2019-07-23 11:09:32) |

Under Describe the decimal (in Numbers) Posted on 2019-07-12 (2 Comments) |

| Fuller solution by Jer (2019-07-12 14:51:26) |

Under A's, B's, C's and D's 2 (in Logic) Posted on 2019-07-03 (6 Comments) |

| Spoiler by Jer (2019-07-03 12:29:49) |

Under Quick factors II (in Numbers) Posted on 2019-06-23 (1 Comments) |

| Quickly by Jer (2019-06-23 20:02:56) |

Under Differentiated function (in Calculus) Posted on 2019-06-22 (1 Comments) |

| Either solution or confused by Jer (2019-06-25 09:17:38) |

Under Find the rainbow (in Probability) Posted on 2019-06-13 (1 Comments) |

| Solution by Jer (2019-06-13 10:37:46) |

Under The Real Product (in General) Posted on 2019-06-11 (10 Comments) |

| My take by Jer (2019-06-12 19:59:30) |

Under Divisors' sum = square (in Numbers) Posted on 2019-05-27 (7 Comments) |

| Sequence by Jer (2019-05-28 10:08:56) |

Under Crossword puzzles (in Algorithms) Posted on 2019-05-21 (10 Comments) |

| re: My Attempt by Jer (2019-06-02 10:28:50) |

| My Attempt by Jer (2019-06-01 23:38:59) |

Under Carry on, Decimal (in Numbers) Posted on 2019-05-20 (3 Comments) |

| Cool number by Jer (2019-05-20 19:44:45) |

Under Three Orthogonal Chords (in Geometry) Posted on 2019-05-10 (2 Comments) |

| Error in the problem? by Jer (2019-05-13 15:54:02) |

Under Odd partition (in Numbers) Posted on 2019-05-09 (2 Comments) |

| The Fibonacci connection by Jer (2019-05-09 21:38:10) |

Under Cosmological Logic (in Logic) Posted on 2019-05-07 (4 Comments) |

| re: This is always troubling.... by Jer (2019-05-09 21:40:48) |

| Logic by Jer (2019-05-08 09:56:49) |

Under A geometric gangster shooting (in Just Math) Posted on 2019-05-06 (5 Comments) |

| re: A guess (spoiler?) by Jer (2019-05-06 12:25:03) |

Under 9-ending numbers (in Numbers) Posted on 2019-04-29 (1 Comments) |

| solution by Jer (2019-04-29 13:32:56) |

Under Seven positive numbers (in Numbers) Posted on 2019-04-22 (1 Comments) |

| Solution? by Jer (2019-04-23 16:00:59) |

Under Simple Adding (in Numbers) Posted on 2019-04-18 (1 Comments) |

| Two Solutions by Jer (2019-04-18 09:38:52) |

Under Looks like Cauchy (in Just Math) Posted on 2019-04-17 (3 Comments) |

| Better solution by Jer (2019-04-19 10:33:24) |

| Weak solution by Jer (2019-04-18 11:07:17) |

Under Breaking the Jewel code (in Numbers) Posted on 2019-04-17 (4 Comments) |

| re: some thoughts by Jer (2019-04-17 14:55:02) |

Under Does the hexagon exist? (in Geometry) Posted on 2019-04-11 (1 Comments) |

| Solution by Jer (2019-04-11 15:43:08) |

Under Based on threes! (in Numbers) Posted on 2019-04-09 (3 Comments) |

| re: solution with computation by program, with a one-paragraph analytic method by Jer (2019-04-10 14:13:21) |

| Counting solution. by Jer (2019-04-09 16:00:16) |

Under Mobile screen under Sunlight (in Science) Posted on 2019-04-05 (1 Comments) |

| My idea by Jer (2019-04-05 11:52:14) |

Under Hot and Cold Cubes (in Science) Posted on 2019-04-04 (6 Comments) |

| A trick solution? by Jer (2019-04-05 11:49:27) |

| re(3): Missing info? Or solution? Example by Jer (2019-04-05 11:34:08) |

Under Sine in Exponent (in Just Math) Posted on 2019-04-03 (10 Comments) |

| re(2): 2 possible solutions by Jer (2019-04-03 14:37:45) |

| 2 possible solutions by Jer (2019-04-03 11:50:26) |

Under Hexagon Angles Needed (in Shapes) Posted on 2019-04-02 (2 Comments) |

| Solution? by Jer (2019-04-03 09:57:08) |

Under A Divisor Diversion (in Numbers) Posted on 2019-03-27 (4 Comments) |

| No Subject by Jer (2019-03-27 14:56:21) |

Under Locate the inflection point (in Just Math) Posted on 2019-03-26 (1 Comments) |

| solution by Jer (2019-03-26 15:59:24) |

Under Mean=Median=Mode (in Just Math) Posted on 2019-03-23 (1 Comments) |

| Solution by Jer (2019-03-23 13:24:36) |

Under Too many to work with (in Geometry) Posted on 2019-03-21 (2 Comments) |

| re: GSP solution by Jer (2019-03-22 22:35:49) |

| GSP solution by Jer (2019-03-22 14:22:29) |

Under Factor it (in Numbers) Posted on 2019-03-19 (3 Comments) |

| re(2): Solution .... hmmm by Jer (2019-03-19 22:38:19) |

| Solution by Jer (2019-03-19 10:06:22) |

Under Is this circular billiards? (in Geometry) Posted on 2019-03-18 (4 Comments) |

| re: Geometer's Sketchpad approximation by Jer (2019-03-18 18:29:58) |

Under Rectangle on a cubic (in Just Math) Posted on 2019-03-07 (1 Comments) |

| Most of solution by Jer (2019-03-07 15:57:25) |

Under What's the calculator doing? (in General) Posted on 2019-03-06 (4 Comments) |

| Another grapher same issue. by Jer (2019-03-07 15:28:30) |

Under Can rationalization help? (in Geometry) Posted on 2019-03-05 (1 Comments) |

| Solution by Jer (2019-03-05 09:49:34) |

Under And counting (in Numbers) Posted on 2019-02-28 (4 Comments) |

| If we're sharing non-analytical solutions by Jer (2019-03-01 07:47:40) |

Under L & R (in Word Problems) Posted on 2019-02-26 (1 Comments) |

| Got it! by Jer (2019-02-26 15:19:57) |

Under No Heron (in Just Math) Posted on 2019-02-22 (1 Comments) |

| Solution by Jer (2019-02-22 08:57:44) |

Under Unlikely event (in Numbers) Posted on 2019-02-21 (3 Comments) |

| Calculator solution by Jer (2019-02-21 14:38:02) |

Under Limited reflections (in General) Posted on 2019-02-19 (7 Comments) |

| There are easy ways by Jer (2019-02-20 15:29:21) |

Under Bifonacci (in Numbers) Posted on 2019-02-19 (2 Comments) |

| Solution by Jer (2019-02-19 09:38:28) |

Under Chacun Ã son goÃ»t ! (in Just Math) Posted on 2019-02-18 (3 Comments) |

| re: computer solutions, with an extension of the bonus by Jer (2019-02-19 09:50:58) |

Under Trees, Teas, and Peas (in Word Problems) Posted on 2019-02-18 (1 Comments) |

| Solution by Jer (2019-02-18 11:27:10) |

Under I squeeze, squeeze, and squeeze (in Geometry) Posted on 2019-02-15 (4 Comments) |

| Actual solution by Jer (2019-02-17 13:20:08) |

| Possible solution by Jer (2019-02-17 11:48:40) |

Under Recovering the number (in Numbers) Posted on 2019-02-13 (2 Comments) |

| Solution by year. by Jer (2019-02-13 12:48:24) |

Under The Cut Cube (in Shapes) Posted on 2019-02-13 (4 Comments) |

| Simple solution by Jer (2019-02-14 12:16:49) |

Under 600 sixes (in Numbers) Posted on 2019-02-11 (2 Comments) |

| Quick Solution by Jer (2019-02-11 15:07:48) |

Under Equal Circles (in Geometry) Posted on 2019-02-08 (1 Comments) |

| Solution by Jer (2019-02-11 15:34:08) |

Under Spheres on a floor (in Geometry) Posted on 2019-02-07 (2 Comments) |

| Since this is D5... by Jer (2019-02-07 21:30:14) |

Under Can you C it? (in Word Problems) Posted on 2019-02-06 (21 Comments) |

| I think I can. by Jer (2019-02-06 20:34:45) |

Under Consistency parameter (in Just Math) Posted on 2019-01-30 (3 Comments) |

| about the problem by Jer (2019-01-30 11:50:49) |

Under Smaller product (in Just Math) Posted on 2019-01-29 (2 Comments) |

| Solution by Jer (2019-01-29 08:53:08) |

Under Digit Hunting (in Just Math) Posted on 2019-01-26 (4 Comments) |

| poor explanation by Jer (2019-01-27 11:57:32) |

Under 16 choices (in Just Math) Posted on 2019-01-21 (5 Comments) |

| re(4): Solution PLEASE RECONSIDER. by Jer (2019-01-22 11:38:14) |

| re(2): Solution PLEASE RECONSIDER. by Jer (2019-01-22 10:01:01) |

Under Extreme Rationalization (in Numbers) Posted on 2019-01-19 (4 Comments) |

| re(3): Simply horrendous by Jer (2019-01-21 12:18:18) |

| re: Simply horrendous by Jer (2019-01-20 18:20:27) |

Under From ab to ba (in Logic) Posted on 2019-01-17 (2 Comments) |

| Solution? by Jer (2019-01-17 12:10:50) |

Under Grid nim: 2xN (in Games) Posted on 2019-01-16 (4 Comments) |

| re: Spoiling moves, spoiler for 2x3 and 2x4 by Jer (2019-01-17 11:58:25) |

Under Factorial Tremors (in Numbers) Posted on 2019-01-16 (4 Comments) |

| An observation by Jer (2019-01-16 22:45:17) |

Under Reach home (in Just Math) Posted on 2019-01-14 (11 Comments) |

| re(2): But.... by Jer (2019-01-16 13:43:17) |

| N=3 and conjectured formula by Jer (2019-01-15 10:01:19) |

Under Two triangles in a square (in Geometry) Posted on 2019-01-12 (2 Comments) |

| Context for the problem by Jer (2019-01-12 12:29:17) |

Under Ten ways to pack a cube? (in Shapes) Posted on 2019-01-11 (1 Comments) |

| Solution? by Jer (2019-01-12 10:43:41) |

Under Sine recurrence (in Just Math) Posted on 2019-01-08 (6 Comments) |

| Full solution by Jer (2019-01-08 11:36:32) |

Under A Circle Between the Bell Curves (in Calculus) Posted on 2018-12-23 (2 Comments) |

| Solution with more work. by Jer (2018-12-23 16:30:02) |

| Lazy approximate solution by Jer (2018-12-23 16:07:50) |

Under Copy and Construct (in Geometry) Posted on 2018-12-20 (5 Comments) |

| re(2): Solution by Jer (2018-12-20 21:53:45) |

| Solution by Jer (2018-12-20 18:08:28) |

Under Colored triangle (in Sequences) Posted on 2018-12-14 (9 Comments) |

| re: proposed solution by Jer (2018-12-18 11:07:19) |

Under The 100th number (in Sequences) Posted on 2018-12-10 (7 Comments) |

| Welcome to the club! by Jer (2019-01-12 12:37:20) |

Under Rolling Ellipse (in Geometry) Posted on 2018-12-07 (2 Comments) |

| Evidence by Jer (2018-12-07 17:57:12) |

Under Heptagonal Beauty (in Geometry) Posted on 2018-12-02 (1 Comments) |

| Solution by Jer (2018-12-04 11:47:27) |

Under 5 circles in a hexagon. (in Geometry) Posted on 2018-11-25 (9 Comments) |

| re(3): soln by Jer (2018-11-30 18:23:58) |

| re: soln by Jer (2018-11-29 15:44:58) |

| re(2): Picturing it..... by Jer (2018-11-25 17:56:48) |

Under Sine of Squared (in Calculus) Posted on 2018-11-15 (5 Comments) |

| Solution with WolframAlpha cheating by Jer (2018-11-16 12:24:13) |

Under The Unit Square in the Circle (in Geometry) Posted on 2018-11-10 (1 Comments) |

| Ill defined problem? by Jer (2018-11-10 22:56:35) |

Under A 3-digit number (in Numbers) Posted on 2018-10-27 (13 Comments) |

| re: True Story by Jer (2018-10-27 23:09:59) |

Under Box of balls (in Probability) Posted on 2018-10-16 (6 Comments) |

| re(3): Half a solution (partial spoiler), finished by Jer (2018-10-17 07:45:02) |

| re: Half a solution (partial spoiler), finished by Jer (2018-10-16 09:37:44) |

Under Who pinched the dice? (in Probability) Posted on 2018-10-04 (10 Comments) |

| Why this is difficult by Jer (2018-10-04 14:30:06) |

Under Monty Hall variant (in Probability) Posted on 2018-09-30 (6 Comments) |

| re: question by Jer (2018-09-30 20:54:51) |

| re: strategy (spoiler) by Jer (2018-09-30 17:56:28) |

Under A logical search (in Numbers) Posted on 2018-09-24 (10 Comments) |

| Possible solution by Jer (2018-09-24 11:42:11) |

Under Odd, but true (in Word Problems) Posted on 2018-09-20 (4 Comments) |

| 'Great' examples by Jer (2018-09-20 21:08:34) |

Under One rope, two flagpoles... (in Logic) Posted on 2018-09-18 (4 Comments) |

| Nice problem by Jer (2018-09-18 10:19:15) |

Under A packing exercise (in Shapes) Posted on 2018-09-14 (5 Comments) |

| re: kudos by Jer (2018-09-17 20:05:46) |

| My source and a hint by Jer (2018-09-14 09:16:41) |

Under Compare them (in Numbers) Posted on 2018-09-08 (7 Comments) |

| re(2): proposed solution by Jer (2018-09-08 17:24:45) |

| Graphical solution by Jer (2018-09-08 17:06:13) |

Under Summing up factorials (in Numbers) Posted on 2018-09-02 (1 Comments) |

| Solution by Jer (2018-09-02 11:37:26) |

Under Complicated Tangency (in Geometry) Posted on 2018-09-01 (2 Comments) |

| Solution in one line on a calculator by Jer (2018-09-01 13:59:30) |

Under Ant highway with energy loss (in Calculus) Posted on 2018-08-24 (9 Comments) |

| re: heuristic computer solution by Jer (2018-08-24 22:47:49) |

Under What's next? (3) (in Sequences) Posted on 2018-08-19 (3 Comments) |

| re: researched solution by Jer (2018-08-19 16:55:04) |

Under Jeopardy-style A&Q (in Numbers) Posted on 2018-08-12 (6 Comments) |

| Possible solution(s) by Jer (2018-08-12 15:04:14) |

Under Shirtless ? Even nude! (in Numbers) Posted on 2018-08-07 (3 Comments) |

| Attempts at b,c,d by Jer (2018-08-07 09:39:01) |

Under Special feature (in Numbers) Posted on 2018-07-29 (6 Comments) |

| Solution by Jer (2018-07-29 11:13:33) |

Under Some prime sequences (in Numbers) Posted on 2018-07-04 (11 Comments) |

| The sequence by Jer (2018-07-05 10:10:05) |

Under Zero is the last digit of S (in Numbers) Posted on 2018-06-16 (3 Comments) |

| re: Answer by Jer (2018-06-17 17:10:27) |

Under Define number n in n letters (in General) Posted on 2018-06-08 (4 Comments) |

| Some solutions and a link by Jer (2018-06-08 18:39:48) |

Under Sort it out ! (in Just Math) Posted on 2018-06-05 (1 Comments) |

| A solution by Jer (2018-06-05 09:18:43) |

Under Thinking octal (in Numbers) Posted on 2018-05-30 (2 Comments) |

| Solution by Jer (2018-05-30 09:22:09) |

Under Self-numbers and generators (in Numbers) Posted on 2018-05-23 (8 Comments) |

| re(2): Thoughts on c. (assist req'd) ====>Hint by Jer (2018-05-26 22:31:55) |

| Thoughts on c. (assist req'd) by Jer (2018-05-25 22:03:03) |

| re: a. analytic, b. computer, solutions (spoilers for a and b) by Jer (2018-05-23 15:12:01) |

| part a. with positive n by Jer (2018-05-23 14:25:31) |

Under High and low (in Word Problems) Posted on 2018-05-21 (3 Comments) |

| Simple integers by Jer (2018-05-21 09:39:58) |

Under Where's the Center (in Geometry) Posted on 2018-05-20 (2 Comments) |

| Solution by Jer (2018-05-27 13:28:40) |

Under Will take some time ?? (in Numbers) Posted on 2018-05-18 (5 Comments) |

| re(2): computer solution by Jer (2018-05-19 23:26:57) |

Under From primes to palindromes (in Numbers) Posted on 2018-05-16 (4 Comments) |

| OEIS crossreferencing by Jer (2018-05-16 10:06:09) |

Under Equally Spaced (in Geometry) Posted on 2018-05-13 (4 Comments) |

| re(2): Possible solution by Jer (2018-05-21 14:04:57) |

| Possible solution by Jer (2018-05-19 22:50:39) |

Under 2 capitals (in Word Problems) Posted on 2018-05-11 (3 Comments) |

| No solutions but close by Jer (2018-05-16 21:35:35) |

Under How about 138? (in Sequences) Posted on 2018-05-10 (4 Comments) |

| re: computer solution by Jer (2018-05-10 14:46:46) |

| Link to a spoiler by Jer (2018-05-10 14:32:58) |

Under Unique definition (in Numbers) Posted on 2018-05-07 (1 Comments) |

| 2-digit and beyond by Jer (2018-05-07 09:54:32) |

Under Two random points (in Probability) Posted on 2018-04-26 (10 Comments) |

| re(2): There must be a reason for the D3 rating. No. by Jer (2018-04-26 14:44:33) |

| Solution by Jer (2018-04-26 09:50:49) |

Under Prime stars (in Just Math) Posted on 2018-04-13 (2 Comments) |

| solution by Jer (2018-04-13 10:21:03) |

Under The royal sisters (in Just Math) Posted on 2018-04-09 (3 Comments) |

| Analytic solution by Jer (2018-04-10 09:49:36) |

Under Prime records (in Sequences) Posted on 2018-04-06 (3 Comments) |

| The ?s, no spoiler by Jer (2018-04-08 11:56:11) |

Under Squares built from leftovers (in Numbers) Posted on 2018-04-05 (4 Comments) |

| re(2): Solution by cheating by Jer (2018-04-05 14:56:11) |

| Solution by cheating by Jer (2018-04-05 14:33:51) |

Under Create a magic square (in Numbers) Posted on 2018-04-03 (2 Comments) |

| re: One way by Jer (2018-04-04 09:02:50) |

Under Cube Decomposition (in Geometry) Posted on 2018-04-02 (4 Comments) |

| re: solution with explanation by Jer (2018-04-02 15:18:25) |

Under Comb(k,2) (in Numbers) Posted on 2018-03-29 (4 Comments) |

| A few easy ones by Jer (2018-03-29 09:29:35) |

Under Generating triplets of squares (in Just Math) Posted on 2018-03-25 (5 Comments) |

| More thoughts, problems encountered by Jer (2018-03-26 14:55:04) |

| re: a partial list of infinity by Jer (2018-03-26 09:52:43) |

Under Boxed Parabolas (in Geometry) Posted on 2018-03-24 (4 Comments) |

| Easy way by Jer (2018-03-28 09:35:57) |

| Hard way by Jer (2018-03-25 11:59:35) |

Under Radius missing (in Geometry) Posted on 2018-03-07 (2 Comments) |

| Simple solution by Jer (2018-03-07 09:09:39) |

Under The Truman Show (in Geometry) Posted on 2018-03-02 (4 Comments) |

| About the problem by Jer (2018-03-02 11:16:58) |

Under Square products (in Just Math) Posted on 2018-02-27 (3 Comments) |

| re: computer exploration / thoughts by Jer (2018-02-28 15:19:12) |

Under Strictly non-palindromic numbers (in Numbers) Posted on 2018-02-18 (3 Comments) |

| Task 4 by Jer (2018-02-18 13:12:25) |

Under 15 letters (in Word Problems) Posted on 2018-02-16 (7 Comments) |

| re: my solutions by Jer (2018-02-16 10:12:04) |

| my solutions by Jer (2018-02-16 10:06:51) |

Under Pick-a-book meeting (in Just Math) Posted on 2018-02-12 (5 Comments) |

| Solution by Jer (2018-02-12 09:20:12) |

Under Carpenter's pricing (in Just Math) Posted on 2018-02-05 (5 Comments) |

| 4 systems solution by Jer (2018-02-05 10:09:15) |

Under Random log (in Probability) Posted on 2018-02-04 (1 Comments) |

| Solution with generalization by Jer (2018-02-04 13:19:07) |

Under Evaluate the missing digit (in Just Math) Posted on 2018-01-29 (1 Comments) |

| Solution by Jer (2018-01-29 09:48:02) |

Under Starting the Scrabble Game (in Probability) Posted on 2018-01-24 (8 Comments) |

| 3 people solution by Jer (2018-01-25 22:16:50) |

| re(5): No Subject by Jer (2018-01-25 15:09:40) |

| No Subject by Jer (2018-01-24 14:47:34) |

Under Champagnat numbers (in Just Math) Posted on 2018-01-23 (2 Comments) |

| re: a proof by Jer (2018-01-23 16:01:25) |

Under Quite a coincidence (in Just Math) Posted on 2018-01-19 (6 Comments) |

| Part A only by Jer (2018-01-19 07:39:52) |

Under Fair slices (in Geometry) Posted on 2018-01-16 (8 Comments) |

| responses to previous posts. by Jer (2018-01-16 13:26:51) |

Under Get even (in Numbers) Posted on 2018-01-15 (3 Comments) |

| Solution by Jer (2018-01-15 07:42:21) |

Under Intersection of Perps (in Geometry) Posted on 2018-01-14 (3 Comments) |

| Solution by Jer (2018-01-15 15:10:09) |

Under Evaluating a distance (in Geometry) Posted on 2018-01-13 (4 Comments) |

| re(2): Solution+ by Jer (2018-01-14 12:17:06) |

| Solution+ by Jer (2018-01-13 15:15:16) |

Under Funny way to divide by seven (in Numbers) Posted on 2018-01-12 (3 Comments) |

| Analytic solution by Jer (2018-01-13 15:32:38) |

Under Discounting one (in Numbers) Posted on 2018-01-10 (9 Comments) |

| re: The only way to do it. Confused by Jer (2018-01-10 15:03:53) |

Under Dividing the Land Evenly (in Geometry) Posted on 2018-01-09 (2 Comments) |

| Idea for Part 4 by Jer (2018-01-09 15:30:46) |

Under A meeting point (in Just Math) Posted on 2018-01-07 (2 Comments) |

| Solution by Jer (2018-01-07 12:29:31) |

Under Three questions plus one challenge (in Numbers) Posted on 2018-01-04 (1 Comments) |

| Probably done by Jer (2018-01-04 09:59:54) |

Under Circumcenters and Vectors (in Geometry) Posted on 2017-12-31 (2 Comments) |

| Analytic solution by Jer (2018-01-01 14:21:44) |

Under Three triplets (in Numbers) Posted on 2017-12-30 (6 Comments) |

| re(4): computer solution finds one more by Jer (2018-01-01 14:28:35) |

| Solution by Jer (2017-12-30 10:22:18) |

Under Pandigital and divisible (in Numbers) Posted on 2017-12-29 (3 Comments) |

| Start of impractical analytical solution by Jer (2017-12-29 12:04:42) |

Under Below 25 (in Numbers) Posted on 2017-12-28 (4 Comments) |

| All solutions by Jer (2017-12-28 10:13:39) |

Under A prime nonuplet (in Numbers) Posted on 2017-12-27 (4 Comments) |

| re: computer solution (spoiler) by Jer (2017-12-27 22:11:16) |

Under Persistence I (in Numbers) Posted on 2017-12-24 (3 Comments) |

| The easy ones by Jer (2017-12-24 13:52:03) |

Under Magic circle revisited (in Numbers) Posted on 2017-12-22 (5 Comments) |

| Unanswered question by Jer (2017-12-23 22:58:35) |

Under One problem - many ways to solve... (in Numbers) Posted on 2017-12-21 (6 Comments) |

| re: Simple way to determine t by Jer (2017-12-21 21:15:25) |

| Simple ways with calculator by Jer (2017-12-21 10:22:14) |

Under LOP (in Geometry) Posted on 2017-12-13 (7 Comments) |

| re(2): GSP exploration by Jer (2017-12-14 10:36:12) |

Under Perform and explain (in Tricks) Posted on 2017-12-12 (11 Comments) |

| Proof by Jer (2017-12-12 11:47:16) |

Under Verify and prove (in Sequences) Posted on 2017-12-10 (5 Comments) |

| Classic induction by Jer (2017-12-10 19:38:26) |

Under Just 4 different digits (in Numbers) Posted on 2017-12-03 (10 Comments) |

| You two... by Jer (2017-12-03 21:22:48) |

| Too many - here's some by Jer (2017-12-03 10:24:46) |

Under T-N-T (in Geometry) Posted on 2017-11-25 (2 Comments) |

| Solution by Jer (2017-11-26 11:16:42) |

Under Where Did You Start? (in Just Math) Posted on 2017-11-16 (3 Comments) |

| My approach by Jer (2017-11-17 07:34:50) |

Under Talking BIG (in Numbers) Posted on 2017-11-10 (3 Comments) |

| Really good approximation and a way to get exact by Jer (2017-11-11 22:35:23) |

| Good approximation, upper bound by Jer (2017-11-10 08:34:45) |

Under Rectangle in a circle (in Just Math) Posted on 2017-11-07 (4 Comments) |

| Note: by Jer (2017-11-07 14:27:27) |

Under X & Y erased (in Numbers) Posted on 2017-11-03 (1 Comments) |

| Solution if I read you right. by Jer (2017-11-03 10:14:18) |

Under More Than One Solution? (in Games) Posted on 2017-10-26 (2 Comments) |

| Another solution by Jer (2017-10-26 18:07:13) |

Under It is not SIX (in Numbers) Posted on 2017-10-26 (4 Comments) |

| A big cheat to get 702 and 810 to count. by Jer (2017-10-28 23:45:44) |

| Further thoughts by Jer (2017-10-26 11:01:11) |

| Solution by Jer (2017-10-26 10:48:58) |

Under Does it continue? An original. (in Numbers) Posted on 2017-10-20 (7 Comments) |

| re(3): computer solution by Jer (2017-10-20 15:52:46) |

| re: computer solution by Jer (2017-10-20 11:12:26) |

Under The olog is t anagrammed (in Word Problems) Posted on 2017-10-19 (1 Comments) |

| Sol ut ion by Jer (2017-10-19 15:48:05) |

Under What's out? (in Word Problems) Posted on 2017-10-13 (3 Comments) |

| another couple solutions by Jer (2017-10-13 08:51:13) |

Under Like CABACB (in Word Problems) Posted on 2017-10-08 (2 Comments) |

| A solution for k=26 by Jer (2017-10-09 13:25:55) |

| possible k's. k=26 not solved. by Jer (2017-10-09 11:34:59) |

Under Squeeze in (in Word Problems) Posted on 2017-10-05 (4 Comments) |

| Fits all but one. by Jer (2017-10-05 09:20:58) |

Under Does it continue? 6: Partial sums (in Numbers) Posted on 2017-09-25 (7 Comments) |

| Notes by Jer (2017-09-25 20:24:38) |

Under Does it continue? 5: powers of 2 (in Numbers) Posted on 2017-09-24 (6 Comments) |

| The question by Jer (2017-09-25 10:53:13) |

Under Does it continue? 4: Euclid's next prime (in Numbers) Posted on 2017-09-21 (3 Comments) |

| Your thoughts? by Jer (2017-09-21 21:05:31) |

Under Does it continue? 2: Prime or not? (in Numbers) Posted on 2017-09-16 (6 Comments) |

| re(2): Does it continue? by Jer (2017-09-18 07:35:20) |

| Does it continue? by Jer (2017-09-17 21:07:16) |

Under Cryptaquote I (in Word Problems) Posted on 2017-09-14 (6 Comments) |

| Opposites by Jer (2017-09-14 14:12:45) |

Under Does it continue? 1: Chord regions (in Sequences) Posted on 2017-09-13 (9 Comments) |

| Does it continue? by Jer (2017-09-17 21:10:32) |

| Correction: shift n by Jer (2017-09-13 11:32:51) |

Under MMMMMM Donut (in Just Math) Posted on 2017-09-11 (4 Comments) |

| re: another approach by Jer (2017-09-11 20:36:39) |

Under Lots of lods (in Sequences) Posted on 2017-09-10 (7 Comments) |

| re(2): One type of proof by Jer (2017-09-11 07:35:26) |

| One type of proof by Jer (2017-09-10 10:09:21) |

Under Parallelograms (in Geometry) Posted on 2017-09-09 (5 Comments) |

| May I have a hint, please? by Jer (2017-09-11 20:52:59) |

Under Getting closer to your pie (in Numbers) Posted on 2017-09-04 (10 Comments) |

| part c by Jer (2017-09-04 10:51:28) |

| obvious ones by Jer (2017-09-04 10:09:20) |

Under Triangle in a triangle (in Shapes) Posted on 2017-08-28 (4 Comments) |

| re(2): How about this one? by Jer (2017-08-28 15:19:12) |

Under Strobogrammatic to pandigital (in Numbers) Posted on 2017-08-26 (4 Comments) |

| re: An answer by Jer (2017-08-26 17:07:24) |

Under Next Numbers Please #9 (in Numbers) Posted on 2017-08-23 (9 Comments) |

| re(4): When 12 appears by Jer (2017-08-28 15:20:21) |

| re(2): When 12 appears by Jer (2017-08-27 18:19:58) |

Under Sixty is Special (in Geometry) Posted on 2017-08-18 (1 Comments) |

| Solution & a further result by Jer (2017-08-27 17:58:50) |

Under Planks across a ditch (in Shapes) Posted on 2017-08-17 (4 Comments) |

| Intentions of the problem as d4 by Jer (2017-08-18 20:59:28) |

Under Marbles in boxes (in Algorithms) Posted on 2017-08-16 (5 Comments) |

| re(2): solution - OEIS by Jer (2017-08-17 15:20:50) |

Under Nondivisibility by 11 (in Just Math) Posted on 2017-08-06 (2 Comments) |

| Solution and more by Jer (2017-08-06 09:24:22) |

Under A unique Heronian triangle (in Geometry) Posted on 2017-08-05 (6 Comments) |

| Problem could have been worded better. by Jer (2017-08-06 09:07:13) |

Under Dec = xeh (in Numbers) Posted on 2017-08-02 (5 Comments) |

| re: ...following jer's hint by Jer (2017-08-05 09:03:40) |

| Hint by Jer (2017-08-02 20:43:18) |

Under Two parallelograms (in Geometry) Posted on 2017-08-01 (3 Comments) |

| Simple solution by Jer (2017-08-01 10:55:04) |

Under Find this word (in Word Problems) Posted on 2017-07-31 (7 Comments) |

| Eureka! by Jer (2017-07-31 22:03:44) |

Under Pruned Triangle (in Geometry) Posted on 2017-07-28 (1 Comments) |

| Sketch of a solution by Jer (2017-07-28 19:28:06) |

Under Add'em all ! (in Numbers) Posted on 2017-07-27 (3 Comments) |

| hand solution by Jer (2017-07-27 12:43:06) |

Under Pandigitals Divided by 11 (in Numbers) Posted on 2017-07-23 (4 Comments) |

| Solution by cases by Jer (2017-07-23 16:34:08) |

Under 2 bases (in Numbers) Posted on 2017-07-21 (2 Comments) |

| Solution by Jer (2017-07-21 10:47:34) |

Under From Mahavira (in Just Math) Posted on 2017-07-18 (11 Comments) |

| re(4): Simple Solution, simple-yes ... correct-Yes by Jer (2017-07-19 13:25:16) |

| Consider the date by Jer (2017-07-18 14:38:31) |

Under Unpainting Black (in Probability) Posted on 2017-07-14 (5 Comments) |

| Preliminary work & thoughts by Jer (2017-07-14 09:35:58) |

Under Commutative Exponentiation (in Just Math) Posted on 2017-07-07 (7 Comments) |

| Real solutions by Jer (2017-07-07 12:20:19) |

Under Many Knights (in Games) Posted on 2017-07-05 (1 Comments) |

| Solution? by Jer (2017-07-05 09:33:58) |

Under 38s and Bunches of 1s (in Numbers) Posted on 2017-06-30 (7 Comments) |

| Another way of seeing part of it by Jer (2017-06-30 14:03:47) |

Under Pythagoras' corner (in Geometry) Posted on 2017-06-16 (3 Comments) |

| re: Cutting Corners? by Jer (2017-06-17 10:34:23) |

Under Red vs Black Cuts (in Numbers) Posted on 2017-06-05 (8 Comments) |

| re(2): Solution by Jer (2017-06-05 09:51:37) |

| Solution by Jer (2017-06-05 09:29:12) |

Under Delian delight (in Geometry) Posted on 2017-06-04 (3 Comments) |

| re: solution / hint by Jer (2017-06-04 16:14:00) |

Under Memory Match Game (in Probability) Posted on 2017-05-31 (9 Comments) |

| re: computer discovery by Jer (2017-05-31 21:18:03) |

Under Unbalanced?- No problem (in Weights and Scales) Posted on 2017-05-30 (7 Comments) |

| Simpler solution by Jer (2017-05-30 13:35:13) |

Under Seven Region Partition (in Shapes) Posted on 2017-05-27 (3 Comments) |

| Probably solution by Jer (2017-05-29 08:31:25) |

Under Add one more circle (in Geometry) Posted on 2017-05-21 (6 Comments) |

| Proof it's possible but this isn't the smallest by Jer (2019-04-07 17:50:04) |

| re: Stumped by Jer (2017-05-23 07:32:14) |

Under Four balls (in Probability) Posted on 2017-05-19 (22 Comments) |

| Solution by Jer (2017-05-19 11:56:13) |

Under Not every prime qualifies! (in Numbers) Posted on 2017-05-15 (2 Comments) |

| Solution by Jer (2017-05-15 09:25:46) |

Under One more line (in Logic) Posted on 2017-05-10 (4 Comments) |

| More of the same by Jer (2017-05-10 11:53:07) |

Under The length of the belt (in Geometry) Posted on 2017-05-09 (5 Comments) |

| Raising the difficulty to 3. by Jer (2017-05-09 14:54:04) |

| No Subject by Jer (2017-05-09 14:45:18) |

Under The smallest non-conformist (in Numbers) Posted on 2017-05-02 (3 Comments) |

| re: with computer assistance by Jer (2017-05-02 13:49:29) |

Under A factorial in seconds (in Numbers) Posted on 2017-04-18 (6 Comments) |

| My solution by Jer (2017-04-18 15:15:18) |

Under Pandigital and square (in Numbers) Posted on 2017-04-15 (6 Comments) |

| re(3): Pencil and Paper solution (spoiler) by Jer (2017-04-16 18:18:39) |

Under Sticks in a Cube (in Shapes) Posted on 2017-04-11 (3 Comments) |

| re(2): Solution by Jer (2017-04-14 11:29:12) |

| Solution by Jer (2017-04-12 14:55:44) |

Under Names in Boxes (in Logic) Posted on 2017-04-09 (10 Comments) |

| re(2): Loops by Jer (2017-04-12 13:27:25) |

| Thoughts by Jer (2017-04-10 15:31:03) |

Under What is the value of "?" ? (in General) Posted on 2017-04-06 (3 Comments) |

| Solution? no spoiler by Jer (2017-04-06 15:42:37) |

Under S.o.S is S (in Numbers) Posted on 2017-04-03 (6 Comments) |

| Is this the answer (spoiler) or the trivial one (not)? by Jer (2017-04-03 14:38:54) |

Under Power partition procedure (in Numbers) Posted on 2017-03-26 (5 Comments) |

| 3rd solution - elegance by Jer (2017-03-26 21:31:02) |

| Another solution by Jer (2017-03-26 14:33:59) |

| One solution by Jer (2017-03-26 14:26:21) |

Under 1 is one of them (in Numbers) Posted on 2017-03-25 (2 Comments) |

| re: computer solution / OEIS by Jer (2017-03-25 17:18:15) |

Under True for nine and up (in Numbers) Posted on 2017-03-24 (3 Comments) |

| By hand by Jer (2017-03-24 12:39:01) |

Under POPANASIS (in Word Problems) Posted on 2017-03-23 (4 Comments) |

| re(2): Massive Search by Jer (2017-03-25 09:31:44) |

| A hint by Jer (2017-03-24 08:29:20) |

Under Up and up (in Numbers) Posted on 2017-03-22 (2 Comments) |

| Solution by Jer (2017-03-22 08:36:30) |

Under Same side story (in Probability) Posted on 2017-03-16 (5 Comments) |

| Possible Solution by Jer (2017-03-16 09:17:28) |

Under A Square Slab and a Cube (in Shapes) Posted on 2017-03-12 (2 Comments) |

| Pieces of the second part by Jer (2017-03-14 12:23:05) |

| First part by Jer (2017-03-14 12:12:47) |

Under Staircases in a Cube (in Shapes) Posted on 2017-03-10 (1 Comments) |

| Easiest CEs by Jer (2017-03-10 11:58:09) |

Under Rectangle Point (in Geometry) Posted on 2017-02-28 (2 Comments) |

| re: Solution by Jer (2018-01-05 22:07:04) |

| Solution by Jer (2017-02-28 11:31:26) |

Under Additional values (in Just Math) Posted on 2017-01-22 (1 Comments) |

| Partial solution based on rewording the problem by Jer (2017-01-23 10:26:10) |

Under An interesting recurrence (in Numbers) Posted on 2017-01-17 (5 Comments) |

| re: Why there are many solutions by Jer (2017-01-18 17:35:42) |

| Unreasonable by Jer (2017-01-17 10:48:55) |

Under Squares sum up to a prime (in Just Math) Posted on 2017-01-13 (4 Comments) |

| re: solution by Jer (2017-01-13 16:41:35) |

Under 2nd grade math (in Probability) Posted on 2017-01-12 (4 Comments) |

| re(2): solution -- so about that math test by Jer (2017-01-13 16:36:42) |

Under Beginning of the Month (in Logic) Posted on 2017-01-09 (2 Comments) |

| Solution by Jer (2017-01-09 13:41:41) |

Under Proving divisibility (in Just Math) Posted on 2017-01-08 (2 Comments) |

| Prime indeed. by Jer (2017-01-08 16:13:31) |

Under From Tangent to Circle (in Geometry) Posted on 2017-01-04 (4 Comments) |

| Alternate solution by Jer (2017-01-05 14:31:47) |

Under One to rule them all. (in Sequences) Posted on 2016-12-18 (3 Comments) |

| Unproven formula by Jer (2016-12-18 12:39:53) |

Under Pentagon Partitions (in Shapes) Posted on 2016-12-11 (3 Comments) |

| Symmetry preserving solution. by Jer (2016-12-13 10:24:57) |

Under Vieta's derivatives (in Just Math) Posted on 2016-12-02 (2 Comments) |

| Calculator solution by Jer (2016-12-05 10:01:30) |

Under Seven Hexominos and Two Triominos (in Shapes) Posted on 2016-11-26 (1 Comments) |

| Hints by Jer (2016-11-28 12:24:42) |

Under Equal Areas on Circles (in Geometry) Posted on 2016-11-19 (1 Comments) |

| Analytic solution by Jer (2016-11-19 09:00:48) |

Under Rational Resolution (in Just Math) Posted on 2016-11-18 (2 Comments) |

| Direct solution by Jer (2016-11-19 22:39:14) |

Under AABBCC and Perfect Square (in Just Math) Posted on 2016-11-09 (6 Comments) |

| better solution by Jer (2016-11-09 13:49:09) |

| Possible solution by Jer (2016-11-09 13:19:24) |

Under Lucas Digits Look (in Just Math) Posted on 2016-11-07 (14 Comments) |

| Indirect computation by Jer (2016-11-07 09:25:13) |

Under Covering a Rectangle with Hexominos (in Shapes) Posted on 2016-11-05 (1 Comments) |

| Hints by Jer (2016-11-07 09:34:17) |

Under Hardest easy geometry problem (in Geometry) Posted on 2016-11-04 (2 Comments) |

| Hint: auxiliary bits by Jer (2016-11-19 08:35:51) |

Under Rectangle-Diagonal (in Geometry) Posted on 2016-11-02 (1 Comments) |

| Solution by Jer (2016-11-02 14:26:28) |

Under A peculiar triplet (in Just Math) Posted on 2016-11-01 (7 Comments) |

| The triple without complete proof by Jer (2016-11-01 13:27:52) |

Under The Ninth Hexomino (in Shapes) Posted on 2016-10-28 (1 Comments) |

| Hint (the ninth) by Jer (2016-10-29 16:34:02) |

Under Totient Trial (in Just Math) Posted on 2016-10-24 (2 Comments) |

| My way by Jer (2016-10-24 13:39:57) |

Under Ratio Resolution IV (in Weights and Scales) Posted on 2016-10-20 (3 Comments) |

| Solution? by Jer (2016-10-20 11:31:39) |

Under Prove Phi's Peculiar Property (in Numbers) Posted on 2016-10-17 (3 Comments) |

| re: A different approach (spoiler) by Jer (2016-10-19 12:57:58) |

Under No Fault Coverage 2 (in Shapes) Posted on 2016-10-10 (1 Comments) |

| Hint by Jer (2016-10-10 20:41:20) |

Under Ratio Sum Equation (in Just Math) Posted on 2016-10-09 (1 Comments) |

| Some thoughts and a few solutions by Jer (2016-10-09 16:59:52) |

Under Nine Hexominos in a Square (in Shapes) Posted on 2016-10-07 (2 Comments) |

| Request for hint by Jer (2016-10-09 17:06:22) |

Under Covering a Square with Hexominos (in Shapes) Posted on 2016-10-06 (1 Comments) |

| Hint by Jer (2016-10-09 17:02:48) |

Under Wrapping a Regular Hexagon (in Shapes) Posted on 2016-10-05 (1 Comments) |

| First approximation by Jer (2016-10-05 13:31:13) |

Under Rectangle Evasion (in Shapes) Posted on 2016-09-29 (1 Comments) |

| Hint by Jer (2016-09-30 17:19:49) |

Under Carfax (in General) Posted on 2016-09-29 (2 Comments) |

| posibilities by Jer (2016-09-29 09:53:22) |

Under Unit Cube Paint Undertaking (in Shapes) Posted on 2016-09-28 (6 Comments) |

| re: Considering all the possibilities by Jer (2016-09-29 07:27:30) |

Under No data - just a weighing problem (in General) Posted on 2016-09-27 (2 Comments) |

| My solution by Jer (2016-09-27 13:30:12) |

Under Immobile Hexominos (in Shapes) Posted on 2016-09-25 (1 Comments) |

| Hint by Jer (2016-09-26 11:54:38) |

Under Area search (in Geometry) Posted on 2016-09-19 (2 Comments) |

| Very simple solution by Jer (2016-09-19 13:18:20) |

Under Eight Hexominos plus a Tetromino (in Shapes) Posted on 2016-09-17 (2 Comments) |

| Variants by Jer (2016-09-18 14:20:16) |

| Placement of tetromino Hint by Jer (2016-09-18 14:17:08) |

Under Quadrilateral and Radius Query (in Shapes) Posted on 2016-09-15 (1 Comments) |

| hand waving answer by Jer (2016-09-18 18:00:34) |

Under Sparse Packing a Zig-Zag (in Shapes) Posted on 2016-09-11 (1 Comments) |

| Hint by Jer (2016-09-11 13:33:07) |

Under Lopsided T-Hexomino (in Shapes) Posted on 2016-09-09 (2 Comments) |

| Request for a hint by Jer (2016-09-11 13:39:10) |

Under Hexominos and Squares (in Shapes) Posted on 2016-09-07 (1 Comments) |

| Hint by Jer (2016-09-11 13:36:19) |

Under Polygon Area Ponder (in Shapes) Posted on 2016-09-01 (2 Comments) |

| Solution by Jer (2016-09-01 13:25:49) |

Under Ten L-Hexominos (in Shapes) Posted on 2016-08-31 (3 Comments) |

| re(2): I'd like a hint by Jer (2016-09-02 16:48:16) |

| I'd like a hint by Jer (2016-09-01 20:23:45) |

Under Random Chess Pieces Poser (in Probability) Posted on 2016-08-29 (6 Comments) |

| re: computer aided solution by Jer (2016-08-29 21:23:12) |

Under All rational numbers in (in Sequences) Posted on 2016-08-26 (10 Comments) |

| re(2): From N/D to n @ jer & Charlie by Jer (2016-08-29 08:44:19) |

| From N/D to n by Jer (2016-08-28 17:09:33) |

Under T-Hexomino Packing (in Shapes) Posted on 2016-08-26 (1 Comments) |

| Part 1 only by Jer (2016-08-28 21:34:17) |

Under Powers of 3 (in Numbers) Posted on 2016-08-25 (5 Comments) |

| The only actual solution so far by Jer (2016-08-26 10:17:40) |

| re: Computer exploration by Jer (2016-08-25 21:27:27) |

Under Labeling Minimum (in Weights and Scales) Posted on 2016-08-25 (4 Comments) |

| re(2): Solution by Jer (2016-08-25 14:06:33) |

| Solution by Jer (2016-08-25 10:19:08) |

Under Business is business (in Word Problems) Posted on 2016-08-24 (6 Comments) |

| Hint for previous solvers. by Jer (2016-08-24 09:37:02) |

Under Year from Ratio (in General) Posted on 2016-08-22 (3 Comments) |

| Solution by Jer (2016-08-22 12:48:50) |

Under Estimate a percentage (in Numbers) Posted on 2016-08-22 (6 Comments) |

| A simple upperbound by Jer (2016-08-22 11:06:05) |

Under Covering a Cube with Strips (in Shapes) Posted on 2016-08-18 (3 Comments) |

| Solution to Part 1. Thoughts on part 2. Extensions. by Jer (2016-08-18 17:09:11) |

Under Square angles (in Shapes) Posted on 2016-08-02 (1 Comments) |

| D1? Full solution. by Jer (2016-08-02 12:22:10) |

Under Weight Limited Bridge (in General) Posted on 2016-08-01 (6 Comments) |

| re(2): answer - spoiler by Jer (2016-08-01 21:37:50) |

Under Mirror multiplication (in Numbers) Posted on 2016-07-31 (8 Comments) |

| Some algebra by Jer (2016-07-31 20:59:54) |

Under Square in a Cone (in Shapes) Posted on 2016-07-29 (2 Comments) |

| Can this be all? by Jer (2016-07-29 14:13:27) |

Under A Tetrahedral Volume Puzzle (in Shapes) Posted on 2016-07-28 (1 Comments) |

| Possible solution by Jer (2016-07-28 10:30:10) |

Under A surprising prime gap (in Numbers) Posted on 2016-07-27 (8 Comments) |

| re(4): My solution by Jer (2016-07-31 21:45:02) |

| My solution by Jer (2016-07-27 18:05:19) |

Under 15 Triominoes (in Shapes) Posted on 2016-07-26 (4 Comments) |

| re(2): Harder case by Jer (2016-07-27 21:31:41) |

| Harder case by Jer (2016-07-27 08:58:07) |

Under Go back or double (in Sequences) Posted on 2016-07-25 (5 Comments) |

| re: part 1 by Jer (2016-07-25 11:30:11) |

Under Table Partition Trial (in Shapes) Posted on 2016-07-24 (3 Comments) |

| re: 10/11 of the other pentominoes by Jer (2016-07-24 14:14:49) |

| D1 argument by Jer (2016-07-24 12:10:20) |

Under Triangle Area and Integer Finding (in Shapes) Posted on 2016-07-23 (2 Comments) |

| Full solution by Jer (2016-07-26 11:39:54) |

Under Seventh Term Settlement (in Sequences) Posted on 2016-07-22 (10 Comments) |

| Is an algebraic solution likely by Jer (2016-07-22 11:16:48) |

Under Two items to get sqrt of 2 (in Science) Posted on 2016-07-19 (5 Comments) |

| re(2): another way(s) by Jer (2016-07-26 09:49:15) |

| Shoes land on their feet. A solution. by Jer (2016-07-19 10:28:08) |

Under The First Repeat (in Probability) Posted on 2016-07-18 (5 Comments) |

| re: solution by Jer (2016-07-18 21:13:16) |

Under Equilateral Exercise (in Shapes) Posted on 2016-07-15 (1 Comments) |

| Solution by Jer (2016-07-15 17:40:35) |

Under Restricted Five Coin Sort (in Weights and Scales) Posted on 2016-07-14 (1 Comments) |

| Solution by Jer (2016-07-14 13:47:58) |

Under Prove SG's theorem (in Just Math) Posted on 2016-07-12 (3 Comments) |

| Solution and related result by Jer (2016-07-13 10:20:51) |

Under Two Digit Diameter Trial (in Shapes) Posted on 2016-07-11 (2 Comments) |

| analytic solution by Jer (2016-07-11 17:24:07) |

Under Multiple Harshad Numbers (in Numbers) Posted on 2016-07-10 (12 Comments) |

| re: Moby Dick has been captured -- part 2 solved by Jer (2016-07-14 13:55:58) |

Under Sum Reals, Get Integer (in Just Math) Posted on 2016-07-09 (3 Comments) |

| re: Solution by Jer (2016-07-09 13:50:28) |

Under Circle Cover Conclusion (in Shapes) Posted on 2016-07-07 (2 Comments) |

| Interpretation 2: Overlap by Jer (2016-07-07 14:13:26) |

| Interpretation 1: Non-overlap by Jer (2016-07-07 13:23:56) |

Under Quadrilateral Area Query 2 (in Shapes) Posted on 2016-07-03 (3 Comments) |

| On side order by Jer (2016-07-03 22:10:49) |

Under 4 numbers make 5 squares (in Numbers) Posted on 2016-06-30 (10 Comments) |

| re: A (bad?) guess by Jer (2016-07-01 11:11:57) |

| re: computer solution and discussion by Jer (2016-06-30 16:42:25) |

Under Simple number trick (in Numbers) Posted on 2016-06-29 (5 Comments) |

| re: Likely answer by Jer (2016-06-30 09:08:26) |

| re: comment by Jer (2016-06-29 10:45:33) |

Under Covering a Square (in Shapes) Posted on 2016-06-24 (2 Comments) |

| re: One arrangment by Jer (2016-06-24 12:11:28) |

Under Find From Four 2 (in Just Math) Posted on 2016-06-23 (4 Comments) |

| long way complete solution by Jer (2016-06-23 21:17:49) |

Under Three Integer Root Sum (in Just Math) Posted on 2016-06-22 (2 Comments) |

| Alternate solution by Jer (2016-06-22 13:37:44) |

Under Three vowels (in Word Problems) Posted on 2016-06-21 (4 Comments) |

| List of countries by Jer (2016-06-21 12:37:06) |

Under Go for the midpoint (in Geometry) Posted on 2016-06-18 (4 Comments) |

| Slightly different Solution by Jer (2016-06-18 17:02:59) |

Under Comparing two events (in Probability) Posted on 2016-06-15 (3 Comments) |

| solution by Jer (2016-06-16 09:42:03) |

Under Arithmetic Product Puzzle 2 (in Sequences) Posted on 2016-06-14 (2 Comments) |

| Suspicion of solution by Jer (2016-06-14 09:53:19) |

Under Duodecimal Digit Product and Number Puzzle (in Just Math) Posted on 2016-06-12 (2 Comments) |

| Solution by Jer (2016-06-12 17:51:42) |

Under Isosceles Leg Length (in Shapes) Posted on 2016-06-09 (6 Comments) |

| The issue by Jer (2016-06-11 12:11:39) |

| 3 Solutions to an impossible task by Jer (2016-06-11 12:06:08) |

Under Random chord problem 2 (in Probability) Posted on 2016-06-09 (1 Comments) |

| Solution by Jer (2016-06-09 14:19:55) |

Under Twice 2 products (in Numbers) Posted on 2016-06-07 (2 Comments) |

| Exhausted Spoiler by Jer (2016-06-07 11:33:35) |

Under Edge problem (in Geometry) Posted on 2016-05-31 (3 Comments) |

| solution and alternate by Jer (2016-05-31 13:22:04) |

Under Log Expression Exercise (in Just Math) Posted on 2016-05-30 (2 Comments) |

| Solution by Jer (2016-05-30 08:41:29) |

Under Digit Sum Equation Puzzle (in Just Math) Posted on 2016-05-28 (5 Comments) |

| A more full solution. by Jer (2016-05-28 19:20:35) |

| Possible solution by Jer (2016-05-28 14:24:16) |

Under Power of 2 (in Numbers) Posted on 2016-05-27 (6 Comments) |

| re: computer solution by Jer (2016-05-27 16:42:04) |

| What I can find by Jer (2016-05-27 11:40:18) |

Under Mark's itinerary (in Probability) Posted on 2016-05-26 (5 Comments) |

| re(2): An by Jer (2016-05-29 21:05:33) |

| An "I've not learned of Mr. O.V." Solution by Jer (2016-05-28 22:19:25) |

Under Duodecimal Element Sum Settlement (in Just Math) Posted on 2016-05-25 (3 Comments) |

| re: working in decimal, same answer by Jer (2016-05-25 20:20:09) |

| Solution (assuming I kept my bases straight) by Jer (2016-05-25 13:14:55) |

Under Laugh, USA (in General) Posted on 2016-05-24 (2 Comments) |

| Some options from my commonwealth by Jer (2016-05-24 13:39:23) |

Under Projection Ponder (in Shapes) Posted on 2016-05-23 (2 Comments) |

| re: solution / generalization by Jer (2016-05-24 07:25:27) |

Under 3 integers (in Just Math) Posted on 2016-05-23 (2 Comments) |

| Remarks by Jer (2016-05-23 09:51:05) |

| Solutions only by Jer (2016-05-23 09:28:28) |

Under Gambler's policy (in Probability) Posted on 2016-05-20 (2 Comments) |

| re: computer assisted solution / coolness by Jer (2016-05-20 21:46:01) |

Under A direct count (in Famous Riddles) Posted on 2016-05-19 (4 Comments) |

| Hint by Jer (2016-05-19 11:18:01) |

Under Rocking moves (in Logic) Posted on 2016-05-17 (3 Comments) |

| re(2): Solution by Jer (2016-05-19 07:19:50) |

Under A cube with missing row (in Numbers) Posted on 2016-05-16 (1 Comments) |

| What are you asking for? (Possible spoiler) by Jer (2016-05-16 09:19:28) |

Under Cubic and Quadratic Determination (in Just Math) Posted on 2016-05-14 (3 Comments) |

| re: Possible solution by Jer (2016-05-14 14:45:28) |

Under From challenge to change (in Word Problems) Posted on 2016-05-12 (4 Comments) |

| Spoiler by Jer (2016-05-12 14:19:40) |

Under Terrific sequence (in Sequences) Posted on 2016-05-10 (6 Comments) |

| re: A hint by Jer (2016-05-16 09:26:01) |

Under Puzzle Calendar (in General) Posted on 2016-05-09 (5 Comments) |

| Solution by Jer (2016-05-09 21:15:20) |

Under Hexagon Hinder 2 (in Shapes) Posted on 2016-05-06 (2 Comments) |

| Observation by Jer (2016-05-07 21:35:32) |

Under Create this string (in Numbers) Posted on 2016-05-04 (6 Comments) |

| re(2): Solution by Jer (2016-05-04 21:07:23) |

Under Is it true? (in Just Math) Posted on 2016-05-02 (2 Comments) |

| Solution by formulas by Jer (2016-05-02 09:19:38) |

Under Four From Arithmetic and Geometric (in Sequences) Posted on 2016-04-29 (3 Comments) |

| All solutions (spoiler) by Jer (2016-04-29 12:15:45) |

Under Much of few is many (in Numbers) Posted on 2016-04-28 (2 Comments) |

| Full solution by Jer (2016-04-28 11:59:32) |

Under M.G.'s wit (in Just Math) Posted on 2016-04-27 (3 Comments) |

| Working backwards. Spoiler. by Jer (2016-04-27 13:14:08) |

Under TO and FRO (in Just Math) Posted on 2016-04-25 (4 Comments) |

| Process in my head by Jer (2016-04-25 17:57:51) |

Under Cubic Diophantine Conclusion (in Just Math) Posted on 2016-04-22 (9 Comments) |

| re(4): Start by Jer (2016-04-24 15:00:55) |

Under An educated guess (in Probability) Posted on 2016-04-18 (7 Comments) |

| re(2): Preliminary guess / my guess by Jer (2016-04-18 11:29:06) |

Under Rectangular Crease Resolution (in Shapes) Posted on 2016-04-15 (2 Comments) |

| Quick solution by Jer (2016-04-15 11:52:20) |

Under Proof requested (in Geometry) Posted on 2016-04-14 (3 Comments) |

| simplified geometric proof by Jer (2016-04-15 13:59:05) |

| Analytical solution by Jer (2016-04-15 13:45:37) |

Under 1 to 9 concatenation (in Numbers) Posted on 2016-04-12 (7 Comments) |

| re: computer solution by Jer (2016-04-13 07:21:29) |

| re: Analytic Answer by Jer (2016-04-12 14:11:58) |

| Listing all n's lead to an interesting observation by Jer (2016-04-12 14:03:44) |

Under Extreme Palindrome Exercise (in Just Math) Posted on 2016-04-11 (3 Comments) |

| Analytic solution by Jer (2016-04-11 09:29:48) |

Under Quadrilateral Area Query (in Shapes) Posted on 2016-04-10 (2 Comments) |

| Long Solution by Jer (2016-04-10 16:42:22) |

Under Square Settlement With Digits (in Just Math) Posted on 2016-04-07 (2 Comments) |

| Ten solutions by Jer (2016-04-07 14:02:58) |

Under Circle Line Length (in Shapes) Posted on 2016-04-07 (3 Comments) |

| Solution by Jer (2016-04-08 11:37:32) |

Under Complex Number Query (in Just Math) Posted on 2016-04-03 (1 Comments) |

| Solution (probably the hard way) by Jer (2016-04-03 20:19:34) |

Under Nonconstant Product (in Just Math) Posted on 2016-04-02 (3 Comments) |

| re: Solution - correction by Jer (2016-04-03 20:37:25) |

Under Tatami Tiling (in Shapes) Posted on 2016-03-29 (2 Comments) |

| A different solution. by Jer (2016-03-29 19:23:21) |

Under Star-shaped polyominos (in Shapes) Posted on 2016-03-28 (7 Comments) |

| re(3): Solution Part A by Jer (2016-03-28 19:57:28) |

| re: Solution Part A by Jer (2016-03-28 16:55:49) |

Under Sum from Arithmetic and Geometric (in Sequences) Posted on 2016-03-24 (5 Comments) |

| Possible Solution by Jer (2016-03-24 13:22:49) |

Under Double Reflection (in Geometry) Posted on 2016-03-24 (2 Comments) |

| Alternate solution by Jer (2016-03-24 10:53:44) |

Under Neighbors or not? (in Probability) Posted on 2016-03-22 (3 Comments) |

| re: Solution by Jer (2016-03-23 09:53:18) |

Under Insert Zero (in Numbers) Posted on 2016-03-21 (5 Comments) |

| re: Solution by Jer (2016-03-21 17:27:26) |

| Solution by Jer (2016-03-21 12:30:42) |

Under Rational Value Validation (in Just Math) Posted on 2016-03-20 (11 Comments) |

| re: cardinality of solution set by Jer (2016-03-21 09:54:59) |

Under Find number and base (in Numbers) Posted on 2016-03-17 (6 Comments) |

| re: solution by Jer (2016-03-17 11:10:59) |

Under To-day is Monday & a PIday (in Numbers) Posted on 2016-03-14 (13 Comments) |

| re: No Subject by Jer (2016-03-15 13:45:13) |

| re(3): My best @ jer and CH by Jer (2016-03-15 09:38:52) |

| My best by Jer (2016-03-14 18:01:56) |

Under Form 21 n Times (in Numbers) Posted on 2016-03-11 (2 Comments) |

| Solution spoiler by Jer (2016-03-11 11:02:42) |

Under Rectangles and U Pentominos (in Shapes) Posted on 2016-03-08 (4 Comments) |

| re: posible solution 2 by Jer (2016-03-09 18:05:13) |

| Possible solution. by Jer (2016-03-09 09:44:32) |

Under d1 or more ? (in Numbers) Posted on 2016-03-07 (4 Comments) |

| Why I'm with Ady by Jer (2016-03-07 10:47:25) |

Under Sum Root Value (in Just Math) Posted on 2016-03-05 (2 Comments) |

| Some thoughts by Jer (2016-03-05 12:02:16) |

Under Four P Pentominoes (in Shapes) Posted on 2016-03-04 (4 Comments) |

| Solutions by Jer (2016-03-04 11:56:12) |

Under Three Ways to Put a Square in a Triangle (in Shapes) Posted on 2016-02-26 (8 Comments) |

| re(2): My solution by Jer (2016-02-27 22:35:46) |

| My solution by Jer (2016-02-27 12:46:15) |

Under Geometric and Three Power Travail (in Sequences) Posted on 2016-02-22 (2 Comments) |

| solution by Jer (2016-02-22 11:03:46) |

Under Perimeter from Double-cones (in Shapes) Posted on 2016-02-20 (3 Comments) |

| re(2): Solution by Jer (2016-02-24 12:29:36) |

| Solution by Jer (2016-02-23 11:06:29) |

Under Matching Isosceles and Right Triangle (in Geometry) Posted on 2016-02-19 (7 Comments) |

| re: An idea by Jer (2016-02-21 22:13:27) |

| An idea by Jer (2016-02-20 16:18:39) |

Under Counting Ten Segment Paths (in General) Posted on 2016-02-19 (6 Comments) |

| As many as I found by Jer (2016-02-19 11:03:32) |

Under Area From Even Floor (in Just Math) Posted on 2016-02-15 (2 Comments) |

| Solution by Jer (2016-02-15 12:30:34) |

Under Big difference (in Numbers) Posted on 2016-02-14 (4 Comments) |

| re: computer solutions by Jer (2016-02-14 15:30:09) |

Under Hexagon Hinder (in Shapes) Posted on 2016-02-12 (2 Comments) |

| General solution by Jer (2016-02-12 09:16:19) |

| Simple solution by Jer (2016-02-12 09:02:01) |

Under Boxes galore (in Numbers) Posted on 2016-02-11 (2 Comments) |

| Possible solution by Jer (2016-02-11 09:20:44) |

Under Optimal Order (in Sequences) Posted on 2016-02-10 (5 Comments) |

| re(2): This should work by Jer (2016-02-14 11:48:59) |

| re: This should work by Jer (2016-02-13 21:26:34) |

| This should work by Jer (2016-02-11 11:56:25) |

Under Two Square Settlement (in Shapes) Posted on 2016-02-09 (1 Comments) |

| Solution by Jer (2016-02-10 11:58:01) |

Under Interesting representation (in Numbers) Posted on 2016-02-08 (6 Comments) |

| re(2): Non-answer by Jer (2016-02-08 20:08:53) |

| Non-answer by Jer (2016-02-08 15:42:16) |

Under Coefficient From Roots (in Just Math) Posted on 2016-02-07 (2 Comments) |

| Solution - the hard way by Jer (2016-02-07 16:12:32) |

Under a version of NIM (in Games) Posted on 2016-02-04 (3 Comments) |

| Mapping out a bit by Jer (2016-02-04 20:20:26) |

Under Word Grid (in Word Problems) Posted on 2016-02-04 (6 Comments) |

| re(2): partial spoiler. by Jer (2016-02-04 17:12:55) |

Under Dascal triangle (in Numbers) Posted on 2016-02-02 (8 Comments) |

| re(4): computer solution by Jer (2016-02-04 07:24:10) |

| re: computer solution by Jer (2016-02-03 11:14:00) |

Under Erase the right 90 (in Numbers) Posted on 2016-01-28 (5 Comments) |

| Sequence? by Jer (2016-01-29 07:26:40) |

Under Last term zero (in Sequences) Posted on 2016-01-28 (3 Comments) |

| Spoiler by Jer (2016-01-28 09:34:50) |

Under Integer Illation From Divisors (in Just Math) Posted on 2016-01-27 (2 Comments) |

| Solution by Jer (2016-01-27 10:18:51) |

Under Evaluate probabilities (in Probability) Posted on 2016-01-26 (3 Comments) |

| re: Counting, Counting (spoiler) - decimals by Jer (2016-01-26 10:27:10) |

Under Three Jar Trial (in Weights and Scales) Posted on 2016-01-25 (4 Comments) |

| Concise solution by Jer (2016-01-26 07:31:10) |

Under Find the next two numbers (in Sequences) Posted on 2016-01-21 (4 Comments) |

| Answer, no spoiler by Jer (2016-01-21 07:51:59) |

Under Three Power Verification (in Just Math) Posted on 2016-01-20 (4 Comments) |

| re: Solution by Jer (2016-01-21 07:49:36) |

Under Detect my chosen coin (in Games) Posted on 2016-01-19 (19 Comments) |

| Some ideas by Jer (2016-01-20 08:21:47) |

Under 9 coins prob (in Weights and Scales) Posted on 2016-01-18 (6 Comments) |

| A solution by Jer (2016-01-18 12:17:21) |

Under 6 coins (in Weights and Scales) Posted on 2016-01-13 (10 Comments) |

| re: Solution / counterexample by Jer (2016-01-13 12:21:16) |

Under Four balloons (in Just Math) Posted on 2016-01-12 (4 Comments) |

| re: Solution / efficiency challenge by Jer (2016-01-14 10:40:32) |

| Solution by Jer (2016-01-12 10:45:41) |

Under Primevens and primeodds (in Numbers) Posted on 2016-01-10 (8 Comments) |

| re(2): some stats extended by Jer (2016-01-10 20:18:57) |

Under Tan Settlement (in Shapes) Posted on 2016-01-09 (3 Comments) |

| A false start and an approximation by Jer (2016-01-10 20:07:19) |

Under Lost in the woods (in Just Math) Posted on 2016-01-08 (12 Comments) |

| About the problem by Jer (2016-01-10 12:06:23) |

| re: Graphic? by Jer (2016-01-10 11:32:00) |

| Not there yet. by Jer (2016-01-09 23:25:15) |

| re: proposed solution by Jer (2016-01-08 21:52:48) |

Under A math symbol (in Numbers) Posted on 2016-01-08 (10 Comments) |

| re: The 3rd one by Jer (2016-01-08 21:49:54) |

| More perhaps by Jer (2016-01-08 09:13:07) |

Under Pumpkins 5 (in Weights and Scales) Posted on 2016-01-06 (2 Comments) |

| Solution by Jer (2016-01-06 11:14:20) |

Under Test #9 (in Word Problems) Posted on 2016-01-05 (3 Comments) |

| Rem3 was right by Jer (2016-01-05 10:21:29) |

Under One out of Five (in Weights and Scales) Posted on 2016-01-04 (2 Comments) |

| Solution by Jer (2016-01-04 10:10:44) |

Under Floor and Square Division Settlement (in Just Math) Posted on 2016-01-01 (4 Comments) |

| re(2): answer by Jer (2016-01-02 12:23:49) |

Under Peaceful superqueens (in General) Posted on 2015-12-31 (2 Comments) |

| five-by-five by Jer (2015-12-31 14:59:20) |

Under Monotonous integers (in Numbers) Posted on 2015-12-30 (9 Comments) |

| different answer by Jer (2015-12-30 12:57:55) |

Under One of Sixteen (in Weights and Scales) Posted on 2015-12-29 (12 Comments) |

| re(3): Short solution. by Jer (2016-01-12 10:20:32) |

| re: Short solution. by Jer (2016-01-11 12:30:33) |

Under Equiangular Hexagon Query (in Shapes) Posted on 2015-12-29 (1 Comments) |

| Solution and comment by Jer (2015-12-30 11:40:30) |

Under Triangle Area Ascertainment (in Shapes) Posted on 2015-12-26 (2 Comments) |

| Ideas that didn't work and then GSP solution by Jer (2015-12-27 21:34:28) |

Under Run away (in Games) Posted on 2015-12-22 (3 Comments) |

| re(2): Solution by Jer (2015-12-23 13:20:20) |

| Solution by Jer (2015-12-22 09:37:22) |

Under Quadratic and Five Variable Query (in Just Math) Posted on 2015-12-20 (2 Comments) |

| simple solutions by Jer (2015-12-20 15:48:24) |

Under ABCD Grid (in Logic) Posted on 2015-12-16 (2 Comments) |

| Detailed Solution by Jer (2015-12-20 12:19:11) |

Under Protecting the fleet Parts A. & B. (in Geometry) Posted on 2015-12-14 (4 Comments) |

| re: solutions by Jer (2015-12-14 16:56:41) |

Under Complex Equation Conclusion (in Just Math) Posted on 2015-12-12 (3 Comments) |

| Solution by Jer (2015-12-14 11:07:40) |

Under Using a standard deck (in Numbers) Posted on 2015-12-11 (2 Comments) |

| Solution by Jer (2015-12-11 12:57:28) |

Under A peculiar triangular number (in Numbers) Posted on 2015-12-10 (2 Comments) |

| By OEIS by Jer (2015-12-11 13:22:25) |

Under A special short-list (in Numbers) Posted on 2015-12-08 (3 Comments) |

| Analytical solution by Jer (2015-12-08 11:25:09) |

Under Reversible hours (in Shapes) Posted on 2015-12-07 (4 Comments) |

| re(2): Colon included / no cheating by Jer (2015-12-09 11:34:46) |

| Colon included by Jer (2015-12-07 16:14:42) |

Under Cos Case Concern (in Shapes) Posted on 2015-12-06 (4 Comments) |

| re(2): Two solutions by Jer (2015-12-06 20:04:43) |

| Two solutions by Jer (2015-12-06 12:55:48) |

Under Two Power Equation Poser (in Just Math) Posted on 2015-12-05 (1 Comments) |

| Solution by Jer (2015-12-06 17:29:16) |

Under List of pairs (in Just Math) Posted on 2015-12-04 (2 Comments) |

| re: computer solution -- first eight pairs by Jer (2015-12-04 12:50:00) |

Under Variety of divisors (in Numbers) Posted on 2015-12-03 (3 Comments) |

| re(2): solution by Jer (2015-12-03 12:02:35) |

Under Get the right product (in Just Math) Posted on 2015-12-01 (5 Comments) |

| re: Different solution (dumb error) by Jer (2015-12-02 14:05:17) |

| Different solution by Jer (2015-12-02 07:18:54) |

Under Increasing sequences (in Just Math) Posted on 2015-11-30 (3 Comments) |

| re: How about...? by Jer (2015-12-02 10:54:33) |

Under No primes here (in Sequences) Posted on 2015-11-30 (2 Comments) |

| Solution and thought process. by Jer (2015-11-30 16:58:09) |

Under Coin contest (in Games) Posted on 2015-11-27 (5 Comments) |

| re: 3 coins, 4 coins, and a question by Jer (2015-11-27 23:02:14) |

| Simple case by Jer (2015-11-27 16:19:13) |

Under Pair and Power Poser (in Just Math) Posted on 2015-11-26 (1 Comments) |

| Solutions by graphing by Jer (2015-11-27 16:01:12) |

Under Square in a notched square (in Geometry) Posted on 2015-11-25 (3 Comments) |

| re: A thought (spoiler) by Jer (2015-11-27 15:44:34) |

Under Biggest and smallest (in Just Math) Posted on 2015-11-24 (2 Comments) |

| re: computer solution by Jer (2015-11-24 11:05:37) |

Under Complex Number and Power Puzzle (in Just Math) Posted on 2015-11-23 (1 Comments) |

| Solution by Jer (2015-11-26 09:51:41) |

Under AINS (in Word Problems) Posted on 2015-11-23 (3 Comments) |

| One possibility by Jer (2015-11-23 08:33:49) |

Under Summing Consecutive Terms and Pair Determination (in Sequences) Posted on 2015-11-21 (3 Comments) |

| Slight variant solution by Jer (2015-11-21 12:48:22) |

Under Generalizing II (in Sequences) Posted on 2015-11-20 (2 Comments) |

| another way to calculate by Jer (2015-11-20 15:37:41) |

Under Optimizing Potency (in Algorithms) Posted on 2015-11-19 (10 Comments) |

| re: Triangular numbers and Pascal's Triangle (spoiler) by Jer (2015-11-26 22:26:07) |

| I think I got it. by Jer (2015-11-20 15:32:57) |

| Possible improvement by Jer (2015-11-20 14:12:58) |

Under Sum of powers (in Numbers) Posted on 2015-11-18 (3 Comments) |

| Solution by Jer (2015-11-18 08:33:17) |

Under Irrational Decision (in Just Math) Posted on 2015-11-15 (6 Comments) |

| re(2): N=2 only by Jer (2015-11-16 20:48:21) |

| N=2 only by Jer (2015-11-16 07:26:45) |

Under Tiling and counting (in Numbers) Posted on 2015-11-10 (2 Comments) |

| Solution and my story. by Jer (2015-11-10 13:37:39) |

Under Complex Number Puzzle (in Just Math) Posted on 2015-11-08 (2 Comments) |

| A more confident answer by Jer (2015-11-09 14:11:51) |

| Maybe I got it (possible spoiler) by Jer (2015-11-08 11:26:25) |

Under 10 4 7 10 (in Just Math) Posted on 2015-11-03 (2 Comments) |

| A few by Jer (2015-11-03 14:24:44) |

Under Two and only two (in Just Math) Posted on 2015-11-03 (4 Comments) |

| re(2): a quick look by Jer (2015-11-04 07:42:01) |

| re: a quick look by Jer (2015-11-03 13:03:45) |

Under Prediction (in Tricks) Posted on 2015-11-02 (2 Comments) |

| Solution and a follow-up by Jer (2015-11-02 13:12:58) |

Under Term Sum Settlement (in Sequences) Posted on 2015-10-29 (3 Comments) |

| Algebraic solution by Jer (2015-10-29 16:31:34) |

Under Some questions of abundance (in Just Math) Posted on 2015-10-28 (3 Comments) |

| re: proposed solution / counterexample by Jer (2015-10-28 11:14:06) |

Under Factorizable Expressions (in Just Math) Posted on 2015-10-21 (3 Comments) |

| re: The whole story? More. by Jer (2015-10-22 07:21:33) |

| The whole story? by Jer (2015-10-21 20:22:38) |

Under n-digit ... n-th power (in Numbers) Posted on 2015-10-20 (2 Comments) |

| Non-counting solution by Jer (2015-10-20 13:42:48) |

Under Fly's schedule (in Just Math) Posted on 2015-10-15 (1 Comments) |

| frozen flies don't spoil (spoiler) by Jer (2015-10-15 09:12:14) |

Under Coefficient Determination (in Just Math) Posted on 2015-10-14 (1 Comments) |

| Possible solution by Jer (2015-10-14 13:02:39) |

Under Function Existence Exercise (in Just Math) Posted on 2015-10-11 (4 Comments) |

| re(2): Almost there? by Jer (2015-10-14 10:07:48) |

| Almost there? by Jer (2015-10-13 14:01:28) |

Under Expression and Perfect Square (in Just Math) Posted on 2015-10-10 (3 Comments) |

| Thoughts by Jer (2015-10-11 09:43:26) |

Under sum of digits and 100th term (in Sequences) Posted on 2015-10-08 (3 Comments) |

| re: I've probably miscounted but here goes. by Jer (2015-10-09 08:16:30) |

Under Digit sum and digit product equality (in Just Math) Posted on 2015-10-06 (2 Comments) |

| Links by Jer (2015-10-07 07:30:21) |

Under Probability of constant leading (in Probability) Posted on 2015-10-05 (5 Comments) |

| re(2): Formula with partial proof by Jer (2015-10-06 12:58:38) |

| Formula with partial proof by Jer (2015-10-06 08:15:19) |

Under Positive Integer Pair and Division Puzzle (in Just Math) Posted on 2015-10-03 (1 Comments) |

| partial solution by Jer (2015-10-05 14:02:47) |

Under All are... (in Word Problems) Posted on 2015-10-02 (4 Comments) |

| re(2): Spoiler by Jer (2015-10-05 13:25:32) |

Under Permutations count (in Numbers) Posted on 2015-10-01 (10 Comments) |

| My misleading subject line. by Jer (2015-10-02 13:38:33) |

| Simpler solution by Jer (2015-10-02 07:28:14) |

Under Nine forever (in Just Math) Posted on 2015-09-30 (2 Comments) |

| re: Aha! (spoiler) by Jer (2015-09-30 17:32:16) |

Under Black and white socks (in Probability) Posted on 2015-09-29 (8 Comments) |

| re: the big drawer by Jer (2015-09-30 08:43:31) |

| re: Solution?? by Jer (2015-09-29 13:22:09) |

Under Extreme Sum Settlement (in Just Math) Posted on 2015-09-28 (4 Comments) |

| re(2): Solution (barring errors) by Jer (2015-09-28 16:41:01) |

| Solution (barring errors) by Jer (2015-09-28 13:05:08) |

Under Angle Ratio Ascertainment 2 (in Shapes) Posted on 2015-09-26 (2 Comments) |

| A simpler problem by Jer (2015-09-26 22:07:17) |

Under Families (in General) Posted on 2015-09-25 (4 Comments) |

| Some of these are... by Jer (2015-09-26 22:39:42) |

Under Quit as a winner (in Games) Posted on 2015-09-24 (8 Comments) |

| re: some research (spoiler) by Jer (2015-09-24 17:52:39) |

| re: First Thoughts by Jer (2015-09-24 12:57:54) |

Under Less Than 2015 (in Just Math) Posted on 2015-09-22 (3 Comments) |

| re: computer solution by Jer (2015-09-23 09:52:46) |

Under Integer Pair and Infinite Puzzle (in Just Math) Posted on 2015-09-20 (2 Comments) |

| Solution by Jer (2015-09-22 13:39:31) |

Under Coordinating arrival (in Just Math) Posted on 2015-09-15 (2 Comments) |

| Slightly different mothod to solution. by Jer (2015-09-15 13:20:13) |

Under C reverses into F (in Numbers) Posted on 2015-09-14 (10 Comments) |

| re(2): computer exploration ....... att ALL by Jer (2015-09-15 07:26:01) |

| re(3): AB? hint by Jer (2015-09-14 17:45:48) |

| AB? by Jer (2015-09-14 13:38:23) |

Under Number Difference and Erasure Puzzle (in Just Math) Posted on 2015-09-14 (2 Comments) |

| Too many to list by Jer (2015-09-16 09:34:03) |

Under Prime Ratio Possibility (in Just Math) Posted on 2015-09-11 (3 Comments) |

| Other numbers by Jer (2015-09-11 11:47:59) |

Under Fair? (in Games) Posted on 2015-09-10 (10 Comments) |

| re: Solution by Jer (2015-09-14 12:03:02) |

Under Three-syllable word (in Tricks) Posted on 2015-09-07 (3 Comments) |

| The answer? No. by Jer (2015-09-07 21:21:33) |

Under Six countries (in General) Posted on 2015-09-04 (8 Comments) |

| Alternate solution by Jer (2015-09-04 17:27:40) |

Under Surprising answer (in Probability) Posted on 2015-09-02 (6 Comments) |

| More info than you maybe wanted by Jer (2015-09-02 17:50:09) |

Under Convex Hexagon and Ratio Product (in Shapes) Posted on 2015-09-01 (3 Comments) |

| re: metasolution by Jer (2015-09-01 12:39:27) |

Under Homophone Hunt 2 (in Word Problems) Posted on 2015-08-31 (4 Comments) |

| Some starters by Jer (2015-08-31 09:23:04) |

Under Ratio Sum Equals Positive Integer (in Just Math) Posted on 2015-08-30 (3 Comments) |

| re(2): Answer, maybe full solution. by Jer (2015-08-30 20:54:31) |

| Answer, maybe full solution. by Jer (2015-08-30 16:47:23) |

Under Brick Packing Poser (in Shapes) Posted on 2015-08-28 (3 Comments) |

| re(2): Solution by Jer (2015-08-28 22:27:16) |

| Solution by Jer (2015-08-28 14:00:30) |

Under Date Count Conclusion II (in General) Posted on 2015-08-24 (1 Comments) |

| Solution by counting by Jer (2015-08-24 21:19:15) |

Under Numbers in pi (in Numbers) Posted on 2015-08-21 (3 Comments) |

| re: computer solution by Jer (2015-08-21 12:11:49) |

Under Visit USA (in General) Posted on 2015-08-20 (9 Comments) |

| re: Borders and boundaries by Jer (2015-08-23 11:21:59) |

| re: If the goal is... by Jer (2015-08-20 22:30:13) |

Under This or that? (in Probability) Posted on 2015-08-19 (4 Comments) |

| Playing the lottery. by Jer (2015-08-19 10:49:33) |

Under Divide et impera (in Numbers) Posted on 2015-08-18 (2 Comments) |

| re: three computer solutions by Jer (2015-08-18 12:50:35) |

Under Perfect Square Digit (in Just Math) Posted on 2015-08-17 (2 Comments) |

| Solution by Jer (2015-08-18 08:51:44) |

Under Infinite Triplet and Perfect Square (in Just Math) Posted on 2015-08-16 (3 Comments) |

| A few by Jer (2015-08-16 14:57:16) |

Under Positive Perfect Cube Sum (in Just Math) Posted on 2015-08-15 (3 Comments) |

| An upper bound by Jer (2015-08-16 08:04:53) |

Under Non-perfect Cube Root Sum (in Just Math) Posted on 2015-08-14 (6 Comments) |

| re(2): An idea by Jer (2015-08-14 23:46:14) |

| An idea by Jer (2015-08-14 12:50:16) |

Under Rooting for 2015 (in Just Math) Posted on 2015-08-14 (3 Comments) |

| re: confirmed solution by Jer (2015-08-14 11:28:21) |

| Likely Solution by Jer (2015-08-14 09:35:22) |

Under Power and Divisibility Puzzle (in Just Math) Posted on 2015-08-12 (6 Comments) |

| Analytic solution by Jer (2015-08-13 10:38:31) |

| re: computer solution by Jer (2015-08-12 22:29:12) |

Under Simpler probability problem? (in Probability) Posted on 2015-08-11 (14 Comments) |

| re: re. difficulty level by Jer (2015-08-11 23:13:00) |

Under Ending in 5 (in Just Math) Posted on 2015-08-11 (1 Comments) |

| Possible solution by Jer (2015-08-11 11:34:13) |

Under Quadratic and Divisibility Puzzle (in Just Math) Posted on 2015-08-09 (2 Comments) |

| re: a suggestive series / explained by Jer (2015-08-09 22:06:40) |

Under Best guess (in Probability) Posted on 2015-07-30 (3 Comments) |

| re: computer solution by Jer (2015-07-31 09:55:05) |

Under Red, White, and Blue (in Logic) Posted on 2015-07-29 (4 Comments) |

| Yet another approach. by Jer (2015-07-29 18:56:37) |

Under Pythagorean triplet generator (in Numbers) Posted on 2015-07-28 (1 Comments) |

| Solution to a cool trick. by Jer (2015-07-28 10:34:40) |

Under What's in a name? (in Word Problems) Posted on 2015-07-23 (3 Comments) |

| re(2): Alternating answer by Jer (2015-07-23 20:51:02) |

Under Nine trolls (in Just Math) Posted on 2015-07-23 (9 Comments) |

| re(2): Solution.....needs editing by Jer (2015-07-23 20:46:43) |

| Solution by Jer (2015-07-23 10:25:35) |

Under Simultaneous Real Settlement (in Just Math) Posted on 2015-07-20 (2 Comments) |

| Obvious ones by Jer (2015-07-20 14:21:24) |

Under Guessing suit (in Probability) Posted on 2015-07-20 (13 Comments) |

| re: Analysis (spoiler) by Jer (2015-07-29 19:01:37) |

Under Circumcenter, orthocenter and ratio puzzle (in Shapes) Posted on 2015-07-19 (1 Comments) |

| Analytical solution by Jer (2015-07-20 09:35:48) |

Under Side Ratio Resolution (in Shapes) Posted on 2015-07-18 (4 Comments) |

| re(3): Solution by Jer (2015-07-20 21:39:24) |

| re: Solution by Jer (2015-07-20 10:04:08) |

Under Bean coloring (in Probability) Posted on 2015-07-13 (11 Comments) |

| re: Solution by Jer (2015-07-29 19:11:31) |

Under From ab to yz (in Word Problems) Posted on 2015-07-06 (5 Comments) |

| Probable solution. by Jer (2015-07-06 13:32:30) |

Under One 1 to Six 6's (in Probability) Posted on 2015-07-01 (14 Comments) |

| re(2): more results (11 and 12) by Jer (2015-07-05 16:07:34) |

| re: computer aided solution by Jer (2015-07-01 22:17:03) |

Under Real Polynomial Puzzle (in Just Math) Posted on 2015-06-27 (1 Comments) |

| Many, if not all. by Jer (2015-06-27 16:40:37) |

Under Put up or shut up (in Word Problems) Posted on 2015-06-23 (5 Comments) |

| A couple that come to mind by Jer (2015-06-24 20:43:40) |

Under Linear and Quadratic Puzzle (in Just Math) Posted on 2015-06-18 (2 Comments) |

| re: Solution / Generalization by Jer (2015-06-19 07:09:09) |

| Solution by Jer (2015-06-18 12:33:08) |

Under Oh no, not Monty again! (in Probability) Posted on 2015-06-17 (9 Comments) |

| re: Solution by Jer (2015-07-29 19:18:47) |

| Thoughts. No solution. by Jer (2015-06-17 09:21:28) |

Under One triplet out (in Numbers) Posted on 2015-06-16 (3 Comments) |

| Here's one by Jer (2015-06-16 13:27:52) |

Under Expression Quotient Puzzle (in Just Math) Posted on 2015-06-16 (3 Comments) |

| Some, maybe all by Jer (2015-06-16 09:30:04) |

Under On his way to fitness (in Just Math) Posted on 2015-06-15 (10 Comments) |

| re: 2 remarks by Jer (2015-06-15 20:34:18) |

| A geometrical approach by Jer (2015-06-15 13:10:34) |

| Statistical approach by Jer (2015-06-15 12:51:48) |

Under Which integer was removed? (in Just Math) Posted on 2015-06-15 (2 Comments) |

| Solution by Jer (2015-06-15 09:12:18) |

Under Harmonic mean and constant determination puzzle (in Shapes) Posted on 2015-06-13 (2 Comments) |

| Solution by Jer (2015-06-15 12:36:54) |

Under No Unit Cube Dissection (in Shapes) Posted on 2015-06-11 (7 Comments) |

| Closing in? by Jer (2015-06-13 22:09:34) |

| re(3): first observations by Jer (2015-06-13 21:02:11) |

| re: first observations by Jer (2015-06-13 17:34:46) |

Under No direct evaluation (in Numbers) Posted on 2015-06-09 (4 Comments) |

| re(2): Solution by Jer (2015-06-09 11:52:01) |

| Solution by Jer (2015-06-09 08:15:51) |

Under Concurrency and Ratio Product Puzzle (in Shapes) Posted on 2015-06-06 (1 Comments) |

| Answer / no solution by Jer (2015-06-09 12:06:23) |

Under Map coloring (in Shapes) Posted on 2015-06-05 (8 Comments) |

| A further challenge. by Jer (2015-06-06 21:01:25) |

| re(2): Drawing Challenged (spoiler?) by Jer (2015-06-05 10:51:11) |

Under Quadratic and Sextic (in Just Math) Posted on 2015-06-04 (1 Comments) |

| Answer by Jer (2015-06-05 11:08:59) |

Under Rational Floor Query (in Just Math) Posted on 2015-06-03 (1 Comments) |

| Part (A) solution, Part (B) answer w/o solution. by Jer (2015-06-04 10:15:42) |

Under Logical, or not? (in General) Posted on 2015-06-01 (4 Comments) |

| re: solution by Jer (2015-06-01 13:48:35) |

Under Rational or not? (in Just Math) Posted on 2015-05-29 (5 Comments) |

| This issue causes troubles. by Jer (2016-06-11 12:22:47) |

| re: solution by Jer (2015-05-29 12:26:22) |

Under Three Centroids (in Geometry) Posted on 2015-05-28 (2 Comments) |

| Simplified solution & more area relationships by Jer (2015-05-29 09:00:05) |

Under What property? (in Shapes) Posted on 2015-05-28 (4 Comments) |

| re(2): Only? (no spoiler) (now spoiler) by Jer (2015-05-28 13:02:35) |

| Only? (no spoiler) by Jer (2015-05-28 09:51:12) |

Under Angle Ratio Ascertainment (in Shapes) Posted on 2015-05-27 (1 Comments) |

| Solution by Jer (2015-05-27 08:55:59) |

Under Tax Collector (in Games) Posted on 2015-05-26 (6 Comments) |

| Solution by Jer (2015-06-02 09:15:39) |

| Answer / no solution by Jer (2015-05-26 09:51:14) |

| re(3): Thoughts. by Jer (2015-05-26 09:39:58) |

Under Sinusoidal System (in Just Math) Posted on 2015-05-24 (2 Comments) |

| re: Thoughts by Jer (2018-12-26 11:58:55) |

Under Cuboid Concern (in Shapes) Posted on 2015-05-21 (2 Comments) |

| Alternate method, same answer by Jer (2015-05-21 17:07:39) |

Under Back to throne (in Probability) Posted on 2015-05-21 (3 Comments) |

| One way to solution by Jer (2015-05-21 09:40:07) |

Under BOW, WRENCH (in Word Problems) Posted on 2015-05-14 (2 Comments) |

| Oh I get it by Jer (2015-05-14 10:58:31) |

Under 112233....99 scrambled (in Numbers) Posted on 2015-05-13 (2 Comments) |

| Always in the last place you look - spoiler by Jer (2015-05-13 12:14:49) |

Under How far can you go? (in Numbers) Posted on 2015-05-12 (6 Comments) |

| re(4): Go on, indeed. by Jer (2015-05-13 10:02:01) |

| re(2): Go on, indeed. by Jer (2015-05-12 13:25:27) |

| Go on, indeed. by Jer (2015-05-12 09:36:57) |

Under A Quickie, not tricky (in Numbers) Posted on 2015-05-11 (6 Comments) |

| re(4): Solution spoiler.....Now list them ALL! by Jer (2015-05-11 12:48:26) |

| re(2): Solution spoiler.....Now list them ALL! by Jer (2015-05-11 11:54:57) |

| Solution spoiler by Jer (2015-05-11 09:41:43) |

Under Sum Root Sum Settlement (in Just Math) Posted on 2015-05-10 (5 Comments) |

| re(2): No Subject by Jer (2015-05-12 09:05:02) |

| No Subject by Jer (2015-05-11 10:15:26) |

Under Animal Anagram - Not (in Word Problems) Posted on 2015-05-06 (3 Comments) |

| Anatomical Anagram by Jer (2015-05-07 06:49:27) |

Under Printer's glitch (in Just Math) Posted on 2015-05-05 (4 Comments) |

| re: answer by Jer (2015-05-06 10:20:05) |

| Part (i) by Jer (2015-05-05 13:45:48) |

Under My friend (in Cryptography) Posted on 2015-05-05 (2 Comments) |

| Solution by Jer (2015-05-05 08:36:06) |

Under From E to D (in Logic) Posted on 2015-04-28 (4 Comments) |

| E (if an error) and H solutions only by Jer (2015-04-28 13:32:49) |

Under Largest palindrome (in Numbers) Posted on 2015-04-27 (4 Comments) |

| Solution by Jer (2015-04-27 12:05:32) |

Under Divisor Determination (in Just Math) Posted on 2015-04-25 (2 Comments) |

| A start? by Jer (2015-04-25 16:04:04) |

Under Three's a company (in General) Posted on 2015-04-23 (7 Comments) |

| 5, 9, 12 by Jer (2015-04-23 09:47:18) |

Under Arithmetic Quadrilateral (in Shapes) Posted on 2015-04-19 (4 Comments) |

| example by Jer (2015-04-20 12:14:45) |

| Part (B) no proof. by Jer (2015-04-20 12:04:03) |

| Part (A) by Jer (2015-04-20 10:55:27) |

Under Acute Ascertainment (in Shapes) Posted on 2015-04-18 (3 Comments) |

| re(2): Solution by Jer (2015-04-19 21:15:20) |

| Solution by Jer (2015-04-18 22:12:46) |

Under 2012 Lamps (in Games) Posted on 2015-04-17 (5 Comments) |

| re(3): Possible solution by Jer (2015-04-18 22:18:40) |

Under A Chinese Scene (in Word Problems) Posted on 2015-04-17 (4 Comments) |

| Many by Jer (2015-04-17 11:00:50) |

Under Some powers decomposed (in Numbers) Posted on 2015-04-16 (5 Comments) |

| re(2): Thoughts from OEIS by Jer (2015-04-17 21:13:39) |

| Thoughts from OEIS by Jer (2015-04-17 08:52:47) |

Under Number Count Conclusion (in Just Math) Posted on 2015-04-15 (4 Comments) |

| Analytics can get you there by Jer (2015-04-16 09:53:17) |

Under So what? (in General) Posted on 2015-04-13 (5 Comments) |

| re: Facilissimus by Jer (2015-04-13 08:59:00) |

Under Deux Power Divisibility (in Algorithms) Posted on 2015-04-12 (3 Comments) |

| re: continuation of Jer's table by Jer (2015-04-12 17:15:52) |

| A sequence and some thoughts. by Jer (2015-04-12 10:39:57) |

Under Bright light (in Science) Posted on 2015-04-09 (9 Comments) |

| I fixed my model. by Jer (2015-04-16 10:23:09) |

| GSP Model disagrees with the previous posts by Jer (2015-04-09 14:19:29) |

Under Tile flipping (in Just Math) Posted on 2015-04-08 (12 Comments) |

| re: N = 5; Hypothesis when N is odd by Jer (2015-04-13 06:51:55) |

| re: Thoughts - a counterexample for you by Jer (2015-04-09 08:51:08) |

Under Roman palindrome (in Numbers) Posted on 2015-04-07 (3 Comments) |

| Depending on what's allowed. by Jer (2015-04-07 08:54:41) |

Under Geometric Rubric (in Just Math) Posted on 2015-04-04 (2 Comments) |

| Something cool I never knew about polynomials (hint) by Jer (2015-04-04 14:52:45) |

Under Reflection Matrix (in Just Math) Posted on 2015-04-01 (3 Comments) |

| re: researched solution by Jer (2015-04-01 21:08:11) |

Under Function Function Function Function Foray (in Just Math) Posted on 2015-03-31 (2 Comments) |

| A good guess / computer help by Jer (2015-03-31 12:50:47) |

Under 27-8=19 (in Just Math) Posted on 2015-03-31 (2 Comments) |

| Solution by Jer (2015-03-31 11:59:48) |

Under Animal to animal (in Word Problems) Posted on 2015-03-27 (2 Comments) |

| Easy Threes and Fours by Jer (2015-03-27 10:23:46) |

Under Neighboring tickets (in Numbers) Posted on 2015-03-26 (2 Comments) |

| A guess - possible solution by Jer (2015-03-26 14:18:55) |

Under Zero Sum Expression (in Just Math) Posted on 2015-03-25 (2 Comments) |

| algebraic solution by Jer (2015-03-26 08:17:28) |

Under A State of Contradictions (in Word Problems) Posted on 2015-03-24 (2 Comments) |

| Spicy solution by Jer (2015-03-24 08:41:01) |

Under Polynomial problem (in Just Math) Posted on 2015-03-22 (2 Comments) |

| Assuming linear factor by Jer (2015-03-23 14:05:30) |

Under Chord Triangle Constant (in Geometry) Posted on 2015-03-21 (4 Comments) |

| A GSP start by Jer (2015-03-21 20:45:12) |

Under Isosceles Crease (in Shapes) Posted on 2015-03-19 (2 Comments) |

| exact solution by Jer (2015-03-19 14:16:21) |

Under Pentagon Fraction Minimizing (in Just Math) Posted on 2015-03-16 (3 Comments) |

| re: solution by Jer (2015-03-16 16:19:38) |

Under Linear and Quadratic Square (in Just Math) Posted on 2015-03-15 (4 Comments) |

| re: A way not to do it. by Jer (2015-03-16 11:51:33) |

Under A Quickie (in Numbers) Posted on 2015-03-13 (1 Comments) |

| solution by Jer (2015-03-13 08:50:08) |

Under Location, location, location (in Geometry) Posted on 2015-03-12 (8 Comments) |

| re(3): To answer the question... by Jer (2015-03-13 08:44:48) |

Under Root sum equals integer (in Just Math) Posted on 2015-03-10 (7 Comments) |

| solution & playing around by Jer (2015-03-10 12:07:14) |

Under Triangle to Triangle (in General) Posted on 2015-03-07 (1 Comments) |

| Solution by Jer (2015-03-09 14:23:21) |

Under Divisor Count Conclusion (in Just Math) Posted on 2015-03-06 (2 Comments) |

| solution by Jer (2015-03-06 08:46:17) |

Under Minimizing Perimeter (in Shapes) Posted on 2015-03-04 (15 Comments) |

| re(2): A triangle that works, may not be minimum (spoiler) by Jer (2015-03-04 12:32:22) |

| re(3): NO DICE.....not a spoiler by Jer (2015-03-04 12:28:11) |

| A triangle that works, may not be minimum by Jer (2015-03-04 09:47:08) |

| re: NO DICE.....not a spoiler by Jer (2015-03-04 09:15:51) |

Under Phrase a question II (in Numbers) Posted on 2015-03-03 (2 Comments) |

| What is... (solution) by Jer (2015-03-03 09:10:57) |

Under Equilateral fun (in Geometry) Posted on 2015-02-28 (2 Comments) |

| Not the easy way (solution) by Jer (2015-02-28 13:58:00) |

Under Prime and perfect (in Numbers) Posted on 2015-02-27 (3 Comments) |

| re(2): Solution - may not be complete by Jer (2015-03-01 20:16:44) |

| Solution - may not be complete by Jer (2015-02-28 11:26:35) |

Under Academia, defeated, yesterday (in Word Problems) Posted on 2015-02-26 (6 Comments) |

| Bad puns by Jer (2015-02-26 10:00:26) |

Under Next year vs the current year (in Numbers) Posted on 2015-02-25 (5 Comments) |

| re(3): Paper and Pencil solution, part (a) / part (b) by Jer (2015-02-25 11:42:40) |

| re: Paper and Pencil solution, part (a) / part (b) by Jer (2015-02-25 11:04:56) |

Under No other case (in Just Math) Posted on 2015-02-24 (2 Comments) |

| re: The easy half / another third by Jer (2015-02-25 10:43:51) |

| The easy half by Jer (2015-02-24 12:13:27) |

Under Composite prime (in Numbers) Posted on 2015-02-24 (2 Comments) |

| Solution by Jer (2015-02-24 08:29:41) |

Under Bamboo Baffle (in Riddles) Posted on 2015-02-23 (3 Comments) |

| glub glub by Jer (2015-02-23 13:37:14) |

Under Not too much (in Numbers) Posted on 2015-02-20 (8 Comments) |

| re(2): Is this valid? no ! - partial spoiler by Jer (2015-02-20 21:19:34) |

| Is this valid? by Jer (2015-02-20 10:07:29) |

Under The final quantity (in Numbers) Posted on 2015-02-18 (4 Comments) |

| Two methods by hand by Jer (2015-02-18 22:56:24) |

Under Approximating radicals (in Numbers) Posted on 2015-02-17 (4 Comments) |

| Clarification by Jer (2015-02-18 21:59:23) |

Under An ancient Egyptian problem (in Just Math) Posted on 2015-02-13 (5 Comments) |

| re: computer solutions by Jer (2015-02-14 11:55:06) |

| Some simple solutions by Jer (2015-02-13 13:36:37) |

Under Bound the product (in Numbers) Posted on 2015-02-13 (4 Comments) |

| re: Possible solution. Correction and second part. by Jer (2015-02-13 12:47:18) |

Under Minding mines. (in Just Math) Posted on 2015-02-07 (1 Comments) |

| Solution by Jer (2015-02-08 15:12:14) |

Under Very very colourful (in General) Posted on 2015-02-06 (2 Comments) |

| #1, 3, 8 by Jer (2015-02-06 14:01:25) |

Under Rooting for Roots (in Just Math) Posted on 2015-02-04 (2 Comments) |

| re: solution by Jer (2015-02-05 09:26:25) |

Under ProSum Numbers (in Numbers) Posted on 2015-01-28 (5 Comments) |

| re: computer solution by Jer (2015-01-28 11:32:19) |

| some sequences by Jer (2015-01-28 11:25:10) |

Under Deux Difference Deduction (in Sequences) Posted on 2015-01-23 (8 Comments) |

| Enough factors? Solution. by Jer (2015-01-23 12:45:52) |

Under Eliot Ness meets Paul ErdÅ‘s (in Numbers) Posted on 2015-01-23 (3 Comments) |

| Solution by Jer (2015-01-23 08:11:40) |

Under What price glory? (in Games) Posted on 2015-01-22 (5 Comments) |

| re: If there isn't an even better strategy... (spoiler?) by Jer (2015-01-22 12:02:31) |

Under Deux Digit Deduction (in Just Math) Posted on 2015-01-21 (2 Comments) |

| powerful solution by Jer (2015-01-21 12:25:04) |

Under Easy as One, Two, Three (in Numbers) Posted on 2015-01-20 (1 Comments) |

| Solution by Jer (2015-01-20 09:13:44) |

Under 4 clues (in Numbers) Posted on 2015-01-19 (3 Comments) |

| Solution by Jer (2015-01-19 10:28:32) |

Under Volume Ratio Validation (in Shapes) Posted on 2015-01-18 (2 Comments) |

| Solution by Jer (2015-01-22 08:28:06) |

Under Squares and Rectangles II (in Just Math) Posted on 2015-01-16 (2 Comments) |

| A quick count. by Jer (2015-01-16 09:03:48) |

Under Square Sum Settlement (in Just Math) Posted on 2015-01-14 (3 Comments) |

| re: computer solution (spoiler) by Jer (2015-01-14 11:26:08) |

Under Sum and Difference (in Just Math) Posted on 2015-01-05 (3 Comments) |

| From a graph by Jer (2015-01-05 09:02:01) |

Under 4d divides 5d (in Just Math) Posted on 2014-12-26 (2 Comments) |

| Possible solution by Jer (2014-12-26 20:41:27) |

Under m & n (in Just Math) Posted on 2014-12-18 (2 Comments) |

| re: computer-aided solution by Jer (2014-12-18 13:00:57) |

Under Equation Exercise (in Just Math) Posted on 2014-12-16 (3 Comments) |

| solving as little as possible by Jer (2014-12-16 13:48:49) |

Under Trigo inequality (in Just Math) Posted on 2014-12-11 (11 Comments) |

| re(4): solution. An idea by Jer (2014-12-13 20:25:35) |

Under Year Yearn 2 (in General) Posted on 2014-12-11 (4 Comments) |

| d1 solution by Jer (2014-12-11 13:36:40) |

Under Out of this word (in Word Problems) Posted on 2014-12-08 (9 Comments) |

| re(3): Most of a solution ---- hint , not a spoiler by Jer (2014-12-08 22:03:24) |

| re: Most of a solution by Jer (2014-12-08 11:56:19) |

Under Triangle Area Trial (in Shapes) Posted on 2014-12-07 (3 Comments) |

| Approximate solution from GSP by Jer (2014-12-08 06:51:09) |

Under Going North-East (in Just Math) Posted on 2014-12-05 (4 Comments) |

| re(2): Another way to avoid tedium. by Jer (2014-12-07 20:31:21) |

| Another way to avoid tedium. by Jer (2014-12-06 21:41:37) |

Under Simultaneous Surmise (in Just Math) Posted on 2014-11-29 (3 Comments) |

| re: Finally! by Jer (2014-11-29 22:27:41) |

Under Geometric Sequence Settlement III (in Sequences) Posted on 2014-11-26 (3 Comments) |

| A slightly different approach by Jer (2014-11-28 16:13:21) |

Under A symmetric relation (in Just Math) Posted on 2014-11-19 (5 Comments) |

| Polar solution by Jer (2014-11-19 10:40:05) |

Under Inconsiderable Integer Illation (in Just Math) Posted on 2014-11-16 (10 Comments) |

| re(2): Actual answer -- calculator solution by Jer (2014-11-16 22:26:01) |

Under My numbers (in Numbers) Posted on 2014-11-14 (3 Comments) |

| All of the solutions by Jer (2014-11-14 09:02:55) |

Under Deux Digit Determination (in Just Math) Posted on 2014-11-13 (4 Comments) |

| Full expansion, but unproven result by Jer (2014-11-13 14:00:50) |

Under Box Volume Baffle (in Shapes) Posted on 2014-11-05 (5 Comments) |

| Probable solution (is my reasoning sensible?) by Jer (2014-11-05 22:36:58) |

Under RMS Rigor (in Just Math) Posted on 2014-11-04 (4 Comments) |

| Almost full solution by Jer (2014-11-05 13:11:15) |

Under Friendship paradox (in Paradoxes) Posted on 2014-10-31 (4 Comments) |

| re: n = 721,000,000: Intuitively by Jer (2014-11-03 09:30:35) |

Under Angle evaluating (in Geometry) Posted on 2014-10-28 (1 Comments) |

| One inefficient way. by Jer (2014-10-28 13:56:37) |

Under Extending tic-tac-toe (in Just Math) Posted on 2014-10-23 (6 Comments) |

| General Solution by Jer (2014-10-23 10:18:48) |

| 6x6x6 solution by Jer (2014-10-23 10:05:28) |

| 5x5x5 solution by Jer (2014-10-23 10:00:22) |

Under One by two (in Numbers) Posted on 2014-10-22 (6 Comments) |

| re(3): 19 solutions by Jer (2014-10-22 20:46:38) |

| 19 solutions by Jer (2014-10-22 10:38:08) |

Under Switch Settlement (in Logic) Posted on 2014-10-20 (3 Comments) |

| Solution (different from previous) by Jer (2014-10-20 08:48:17) |

Under Distinct Values Validation (in Just Math) Posted on 2014-10-16 (7 Comments) |

| re(2): Simplified, no solution by Jer (2014-10-17 09:47:23) |

| Simplified, no solution by Jer (2014-10-16 10:16:51) |

Under Counting Crossings (in Geometry) Posted on 2014-10-08 (7 Comments) |

| Are the solutions correct? by Jer (2014-10-08 14:29:43) |

Under Winning Ticket Tickle (in Probability) Posted on 2014-10-06 (6 Comments) |

| re: possible solution by Jer (2014-10-06 14:13:49) |

Under Defrosting the Cone (in Calculus) Posted on 2014-10-02 (1 Comments) |

| Most calculations not shown by Jer (2014-10-03 11:29:41) |

Under Square Result Rumination (in Just Math) Posted on 2014-09-28 (6 Comments) |

| re: Technical solution--but a larger question remains. by Jer (2014-09-28 10:04:46) |

Under Mary, Mary, Quite Orderly (in Just Math) Posted on 2014-09-24 (6 Comments) |

| re: solution by Jer (2014-09-25 06:46:45) |

Under Fill in (in Sequences) Posted on 2014-09-24 (6 Comments) |

| re(2): Not sure why you would do this... (Probable intended solution.) by Jer (2014-09-25 09:50:59) |

| Not sure why you would do this... by Jer (2014-09-24 10:56:48) |

Under Rectangle Color Rigor (in Just Math) Posted on 2014-09-23 (4 Comments) |

| This seems too easy by Jer (2014-09-23 10:10:57) |

Under Max and Min (in Just Math) Posted on 2014-09-22 (3 Comments) |

| Guesses by Jer (2014-09-22 09:15:13) |

Under Interior Angle Aggregate (in Shapes) Posted on 2014-09-16 (2 Comments) |

| alternate solution by Jer (2014-09-16 12:07:39) |

| A solution by Jer (2014-09-16 11:52:06) |

Under Cubic Quandary (in Calculus) Posted on 2014-09-13 (2 Comments) |

| Solution without calculus. by Jer (2014-09-16 10:01:59) |

| Solution by Jer (2014-09-15 14:02:41) |

Under 4 cents (in Shapes) Posted on 2014-09-12 (11 Comments) |

| About this problem. by Jer (2016-01-31 11:03:45) |

Under Convex Hull (in Geometry) Posted on 2014-09-10 (1 Comments) |

| Most of the answer by Jer (2014-09-11 11:56:14) |

Under Angle Analysis (in Shapes) Posted on 2014-09-05 (1 Comments) |

| Solution based on previous by Jer (2014-09-06 00:24:51) |

Under Fibo's quickie (in Logic) Posted on 2014-09-03 (4 Comments) |

| not so quick answer by Jer (2014-09-03 11:57:38) |

Under Decimal Digits (in General) Posted on 2014-09-02 (5 Comments) |

| My thoughts by Jer (2014-09-02 15:44:34) |

Under Segment Section Settlement (in Probability) Posted on 2014-08-28 (3 Comments) |

| This should work by Jer (2014-08-28 12:24:32) |

Under A PowerSum Puzzle (in Numbers) Posted on 2014-08-27 (3 Comments) |

| Playing with sketchpad by Jer (2014-09-04 23:32:27) |

| Close but not quite. by Jer (2014-08-31 01:31:59) |

Under Testy Triplet Treat II (in Just Math) Posted on 2014-07-25 (4 Comments) |

| Solution and generalization by Jer (2014-07-25 10:28:45) |

Under Heptadecagon Hinder (in Shapes) Posted on 2014-07-13 (1 Comments) |

| I suppose by Jer (2014-07-16 00:46:38) |

Under Sum Power Digit Determination (in Just Math) Posted on 2014-07-12 (4 Comments) |

| Shortcut solution by Jer (2014-07-12 23:51:27) |

Under Union of squares (in Shapes) Posted on 2014-07-09 (10 Comments) |

| re: set of numbers by Jer (2014-07-12 23:55:14) |

| Some odds are possible by Jer (2014-07-09 13:30:53) |

Under Two Oblate Spheroids (in Shapes) Posted on 2014-07-04 (1 Comments) |

| Approximate solution by Jer (2014-07-07 00:28:57) |

Under Arctan Appraisal (in Just Math) Posted on 2014-07-01 (2 Comments) |

| No Subject by Jer (2014-07-01 11:17:51) |

Under F. to P. generator (in Numbers) Posted on 2014-06-25 (4 Comments) |

| Isn't this more general and simple? by Jer (2014-06-26 11:07:00) |

Under Minimum Value Muse (in Just Math) Posted on 2014-06-20 (3 Comments) |

| re: computer solution by Jer (2014-06-20 13:45:13) |

| Possible solution with thought process by Jer (2014-06-20 11:48:18) |

Under A tall tower (in Geometry) Posted on 2014-06-18 (6 Comments) |

| re: Question by Jer (2014-06-19 01:21:00) |

Under Validity Vindication (in Shapes) Posted on 2014-06-18 (2 Comments) |

| solution in three and a half folds. by Jer (2014-06-18 15:02:57) |

Under Cardboard Conclusion (in Shapes) Posted on 2014-06-08 (3 Comments) |

| Prettier solution by Jer (2014-06-09 10:56:11) |

Under Sum Settlement (in Just Math) Posted on 2014-06-03 (4 Comments) |

| Possible solution by Jer (2014-06-03 13:42:42) |

Under Fuel Feat (in Just Math) Posted on 2014-06-03 (4 Comments) |

| re(2): Solution by Jer (2014-06-03 12:46:38) |

Under 3 more hats (in General) Posted on 2014-06-02 (1 Comments) |

| Solution spoiler by Jer (2014-06-02 16:04:37) |

Under Bricks and Box Baffle II (in Shapes) Posted on 2014-05-29 (1 Comments) |

| solution and minimum by Jer (2014-05-29 15:18:16) |

Under Representation Initiation (in Just Math) Posted on 2014-05-26 (3 Comments) |

| Simpler computer solution by Jer (2014-05-27 12:45:26) |

Under Harmonic Sequence Settlement (in Just Math) Posted on 2014-05-22 (3 Comments) |

| solution with no explanation by Jer (2014-05-22 16:25:10) |

Under Array Assignment (in Just Math) Posted on 2014-05-20 (2 Comments) |

| Ignoring (ii) by Jer (2014-05-20 13:36:50) |

Under Guessing Game (in Numbers) Posted on 2014-05-16 (18 Comments) |

| Ideas for part (a) by Jer (2014-05-16 16:04:57) |

Under The highest prime (in Numbers) Posted on 2014-05-16 (8 Comments) |

| Possible solution by Jer (2014-05-16 10:31:41) |

Under Attack Assay (in Probability) Posted on 2014-05-14 (3 Comments) |

| queens solution by Jer (2014-05-14 13:19:31) |

Under 5 unknown digits (in Numbers) Posted on 2014-05-13 (5 Comments) |

| an interesting result by Jer (2014-05-13 15:51:56) |

| Solution by Jer (2014-05-13 13:41:40) |

Under Repdigit Rigor (in Just Math) Posted on 2014-05-11 (2 Comments) |

| Solution by Jer (2014-05-12 12:47:31) |

Under The Ten Statements II (in Logic) Posted on 2014-05-08 (7 Comments) |

| re(3): Solution by Jer (2014-05-09 00:34:13) |

| re: Solution by Jer (2014-05-08 23:31:24) |

Under Baby Blue (in Probability) Posted on 2014-05-08 (11 Comments) |

| Careful reading and further thoughts by Jer (2014-05-08 12:46:47) |

Under Powerful Divisor (in Just Math) Posted on 2014-05-01 (8 Comments) |

| re(2): solution by Jer (2014-05-02 12:39:33) |

| re: some examples by Jer (2014-05-01 16:47:40) |

| solution by Jer (2014-05-01 16:38:40) |

Under Entertain Every Value? (in Just Math) Posted on 2014-04-29 (2 Comments) |

| proof (acceptable?) by Jer (2014-04-29 14:10:04) |

Under Egg Exertion (in Just Math) Posted on 2014-04-28 (1 Comments) |

| solution by Jer (2014-04-28 13:05:56) |

Under Cinq Carve (in Shapes) Posted on 2014-04-25 (7 Comments) |

| New, simpler solution. by Jer (2014-04-27 01:21:40) |

| re(4): a solution - clarifying by Jer (2014-04-27 01:00:39) |

| re(2): a solution by Jer (2014-04-26 18:26:00) |

| a solution by Jer (2014-04-26 11:28:00) |

Under Half of 4X4 (in Numbers) Posted on 2014-04-24 (5 Comments) |

| re: Spoiler by Jer (2014-04-26 18:44:45) |

| Possible solution possible spoiler by Jer (2014-04-24 21:50:23) |

Under 5 Digit Number III (in Just Math) Posted on 2014-04-22 (3 Comments) |

| re: Proof - shortened by Jer (2014-04-24 01:32:35) |

Under Neighbors (in Numbers) Posted on 2014-04-18 (8 Comments) |

| re(3): computer solution by Jer (2014-04-18 23:09:25) |

| re: computer solution by Jer (2014-04-18 14:08:50) |

| a bit of cheating (spoiler) by Jer (2014-04-18 12:58:37) |

Under Cubic Sequence? (in Sequences) Posted on 2014-04-16 (2 Comments) |

| Easy to answer, proof not so much. (solution) by Jer (2014-04-17 10:55:34) |

Under Colorful hats (in Logic) Posted on 2014-04-16 (6 Comments) |

| obvious answer if possible by Jer (2014-04-16 10:26:41) |

Under Pseudo-FIBO (in Sequences) Posted on 2014-04-14 (5 Comments) |

| 'generated' by Jer (2014-04-15 00:06:58) |

Under What digit? (in Numbers) Posted on 2014-04-08 (1 Comments) |

| When you see it... (spoiler) by Jer (2014-04-08 10:44:32) |

Under Fold Ratio (in Shapes) Posted on 2014-04-05 (2 Comments) |

| I can almost do it in my head. by Jer (2014-04-07 00:27:59) |

Under Directly from Lucas (in Sequences) Posted on 2014-04-04 (1 Comments) |

| Show, yes. Prove, no. by Jer (2014-04-07 12:46:52) |

Under Reverse Rigor (in Just Math) Posted on 2014-04-04 (2 Comments) |

| Interesting result solution by Jer (2014-04-04 13:10:20) |

Under Intriguing Integral Illation II (in Calculus) Posted on 2014-04-03 (2 Comments) |

| Ummm... by Jer (2014-04-04 22:02:57) |

Under Fold Judgement II (in Shapes) Posted on 2014-04-01 (6 Comments) |

| Full solution by Jer (2014-04-01 14:51:31) |

Under Integers only (in Sequences) Posted on 2014-03-31 (7 Comments) |

| re(3): Some questions / Possible solution(s) by Jer (2014-03-31 20:29:02) |

| re: Some questions / Possible solution(s) by Jer (2014-03-31 14:56:35) |

Under 2 to 1 Bisector (in Geometry) Posted on 2014-03-30 (2 Comments) |

| A track. (right track?) by Jer (2014-03-31 12:56:05) |

Under Divisible by 27? (in Just Math) Posted on 2014-03-29 (1 Comments) |

| Why 27? Solution. by Jer (2014-03-29 15:27:39) |

Under Words count (in Numbers) Posted on 2014-03-25 (8 Comments) |

| re(3): Solution by Jer (2014-03-26 09:21:08) |

| re: Solution by Jer (2014-03-25 15:00:05) |

| Solution by Jer (2014-03-25 13:09:33) |

Under How high? (in Numbers) Posted on 2014-03-25 (4 Comments) |

| Recursive Proof by Jer (2014-03-25 12:03:38) |

Under Simultaneous Settlement IV (in Just Math) Posted on 2014-03-22 (2 Comments) |

| Solution. by Jer (2014-03-22 23:48:51) |

Under Solution or solutions (in Sequences) Posted on 2014-03-20 (6 Comments) |

| re: computer evaluation by Jer (2014-03-20 21:44:13) |

| Part 1 by Jer (2014-03-20 14:51:12) |

Under Summing the factorials (in Numbers) Posted on 2014-03-15 (3 Comments) |

| re: computer solution by Jer (2014-03-15 22:34:56) |

Under A permuted multiplication (in Numbers) Posted on 2014-03-11 (9 Comments) |

| re(2): Can it be done? by Jer (2014-03-12 07:51:37) |

| re: Yes it can. by Jer (2014-03-11 14:41:09) |

| Can it be done? by Jer (2014-03-11 12:21:11) |

Under Inradii Ratio (in Geometry) Posted on 2014-03-08 (1 Comments) |

| Analytic Solution by Jer (2014-03-10 23:45:18) |

Under Equilateral Crease II (in Shapes) Posted on 2014-03-05 (3 Comments) |

| Part (ii) by Jer (2014-03-06 15:34:49) |

Under A partial deck (in Numbers) Posted on 2014-03-05 (3 Comments) |

| re(2): Solution ....... att: Jer by Jer (2014-03-06 11:19:56) |

| Solution by Jer (2014-03-05 10:26:11) |

Under Formula Formulation (in Just Math) Posted on 2014-03-03 (4 Comments) |

| first findings by Jer (2014-03-03 16:26:12) |

Under Switching Teams (in Probability) Posted on 2014-02-28 (8 Comments) |

| Clarifying questions by Jer (2014-02-28 12:58:08) |

| To Charlie. by Jer (2014-02-28 12:54:46) |

Under sum Up (in Numbers) Posted on 2014-02-26 (5 Comments) |

| re: Method for solution... by Jer (2014-02-27 00:37:04) |

Under Bullseye II (in Logic) Posted on 2014-02-25 (3 Comments) |

| Solution by Jer (2014-02-25 13:55:35) |

Under All Odds (in Numbers) Posted on 2014-02-24 (2 Comments) |

| Possible solution by Jer (2014-02-24 10:49:32) |

Under Penta-Quadratic (in Just Math) Posted on 2014-02-23 (5 Comments) |

| re(2): A long way ----=0.0024990669i ?? by Jer (2014-03-06 11:25:22) |

| A long way by Jer (2014-02-23 21:35:56) |

Under Overlapping Triangles (in Geometry) Posted on 2014-02-22 (1 Comments) |

| Sketchpad by Jer (2014-02-22 11:50:18) |

Under Naturally Geometric (in Just Math) Posted on 2014-02-21 (1 Comments) |

| A solution by Jer (2014-02-21 23:17:21) |

Under Mean = median (in Just Math) Posted on 2014-02-20 (4 Comments) |

| re: solution by Jer (2014-02-21 01:03:35) |

Under Get a good look (in Calculus) Posted on 2014-02-18 (5 Comments) |

| re: Interesting observation by Jer (2014-02-19 00:39:47) |

Under Six sets (in Numbers) Posted on 2014-02-17 (7 Comments) |

| Ignoring distinct p&p but it has an error by Jer (2014-02-18 00:11:36) |

Under Equal areas (in Geometry) Posted on 2014-02-15 (1 Comments) |

| Solution by Jer (2014-02-16 20:04:20) |

Under Largest Overlapped Area (in Shapes) Posted on 2014-02-11 (3 Comments) |

| More thorough answer by Jer (2014-02-12 17:03:47) |

| Hastily sketched answer by Jer (2014-02-12 08:44:40) |

Under Remove last three to get cube root (in Numbers) Posted on 2014-02-11 (3 Comments) |

| Solution by Jer (2014-02-11 10:43:09) |

Under Cards In A Circle (in General) Posted on 2014-02-09 (1 Comments) |

| My reckoning by Jer (2014-02-11 00:51:23) |

Under Reciprocal composition is reciprocal. (in Just Math) Posted on 2014-02-08 (4 Comments) |

| re: Family Plan (spoiler?) by Jer (2014-02-08 13:19:40) |

Under 3 after 4 (in Sequences) Posted on 2014-02-04 (1 Comments) |

| Hints? by Jer (2014-02-04 13:31:57) |

Under My crazy die (in Probability) Posted on 2014-02-03 (3 Comments) |

| a and c by hand by Jer (2014-02-04 13:09:46) |

Under A Tetrahedron (in General) Posted on 2014-01-30 (4 Comments) |

| re(3): Multiple ways (spoiler) by Jer (2014-01-30 15:54:33) |

| re: Multiple ways (spoiler) by Jer (2014-01-30 11:03:28) |

Under N & n (in Just Math) Posted on 2014-01-27 (7 Comments) |

| re(2): Looking at my wall by Jer (2014-01-27 13:41:59) |

| Excel solutions by Jer (2014-01-27 13:39:16) |

| Looking at my wall by Jer (2014-01-27 12:42:36) |

Under Geography? Spelling? Logic? (in Tricks) Posted on 2014-01-24 (4 Comments) |

| re(2): question of identity by Jer (2014-01-24 23:28:18) |

Under Maximizing Matches Model (in Numbers) Posted on 2014-01-22 (16 Comments) |

| My initial suggestions by Jer (2014-01-22 14:11:12) |

Under Advanced alphametics (in Numbers) Posted on 2014-01-17 (8 Comments) |

| Other thoughts by Jer (2014-01-17 15:54:35) |

Under Some Squares Sum Year (in Just Math) Posted on 2014-01-16 (2 Comments) |

| I can program by Jer (2014-01-16 15:38:29) |

Under Summing up the dividers' dividers (in Numbers) Posted on 2014-01-15 (1 Comments) |

| Some sum (spoiler, incomplete proof) by Jer (2014-01-15 14:07:06) |

Under Pentagon in a semicircle (in Geometry) Posted on 2014-01-11 (1 Comments) |

| Solution by Jer (2014-01-12 01:33:18) |

Under Unusual Crossword Puzzle (in Word Problems) Posted on 2014-01-09 (5 Comments) |

| Observations and a question for all. by Jer (2014-01-09 13:42:05) |

Under A missing symbol (in Word Problems) Posted on 2014-01-08 (2 Comments) |

| Some solutions by Jer (2014-01-08 11:32:52) |

Under Supreme Subset (in Just Math) Posted on 2014-01-02 (6 Comments) |

| Blindly crossing possible solution by Jer (2014-01-02 15:04:41) |

Under all squares (in Geometry) Posted on 2014-01-01 (1 Comments) |

| Proof by Jer (2014-01-02 14:37:05) |

Under Trigonometric product (in Numbers) Posted on 2013-12-29 (4 Comments) |

| A proof. by Jer (2013-12-29 19:10:25) |

Under Going Maximum With Harmonic (in Just Math) Posted on 2013-12-28 (2 Comments) |

| By hand by Jer (2013-12-28 23:54:34) |

Under Lucas squares (in Just Math) Posted on 2013-12-15 (6 Comments) |

| re(4): Long solution. by Jer (2013-12-17 11:06:49) |

| re(2): Long solution. by Jer (2013-12-16 15:46:27) |

| Long solution. by Jer (2013-12-16 09:33:17) |

Under Six Letter Strikeout (in Tricks) Posted on 2013-12-10 (6 Comments) |

| Solution with explanation by Jer (2013-12-11 11:15:49) |

Under Two Rectangles (in Geometry) Posted on 2013-12-09 (2 Comments) |

| Some solutions by Jer (2013-12-09 11:20:33) |

Under Only One, One, One II (in Just Math) Posted on 2013-12-08 (5 Comments) |

| re: Counterexample? by Jer (2013-12-10 18:22:03) |

| Counterexample? by Jer (2013-12-09 13:20:52) |

Under Amazing (in Geometry) Posted on 2013-12-07 (1 Comments) |

| A specific case by Jer (2013-12-10 16:19:51) |

Under 1998 (in Numbers) Posted on 2013-12-05 (5 Comments) |

| Some ways to do 2 by Jer (2013-12-05 15:55:41) |

| Just the first by Jer (2013-12-05 15:15:47) |

Under Consecutive Base Baffle (in Just Math) Posted on 2013-12-04 (4 Comments) |

| re: computer solution by Jer (2013-12-04 18:27:49) |

Under Square in a Pentagon (in Geometry) Posted on 2013-12-01 (4 Comments) |

| re: More likely to be correct solution. by Jer (2013-12-03 00:44:35) |

| More likely to be correct solution. by Jer (2013-12-02 16:15:39) |

| Possible solution by Jer (2013-12-02 15:58:05) |

Under Minimize Angle (in Calculus) Posted on 2013-11-30 (1 Comments) |

| Direct calculus approach by Jer (2013-11-30 14:51:24) |

Under Joker Possession (in Logic) Posted on 2013-11-27 (1 Comments) |

| Three of a kind (Solution) by Jer (2013-11-27 10:48:51) |

Under Face-Up Card Array (in Logic) Posted on 2013-11-20 (1 Comments) |

| Solution by homomorphism by Jer (2013-11-20 14:02:18) |

Under Testing Three Students (in Just Math) Posted on 2013-11-20 (2 Comments) |

| Solution with reasonable assumptions by Jer (2013-11-20 12:11:51) |

Under Michelangelo? (in Shapes) Posted on 2013-11-18 (2 Comments) |

| I spy by Jer (2013-11-19 09:14:38) |

Under A Square, a Rectangle and a Triangle (in Geometry) Posted on 2013-11-17 (3 Comments) |

| Just the answers, no derivation. by Jer (2013-11-18 15:50:43) |

Under Define winning strategy (in Games) Posted on 2013-11-14 (6 Comments) |

| It's complicated by Jer (2013-11-15 16:09:10) |

| How to win. by Jer (2013-11-15 09:08:43) |

Under Collinear and Equal Angles (in Geometry) Posted on 2013-11-09 (5 Comments) |

| Specific case. Almost full solution by Jer (2013-11-12 09:53:12) |

Under Dart Discharge (in Logic) Posted on 2013-11-07 (2 Comments) |

| Logical solution. by Jer (2013-11-07 15:32:49) |

Under Four Digits (in Numbers) Posted on 2013-11-05 (4 Comments) |

| re(2): computer solution --- KUDOS by Jer (2013-11-05 15:47:41) |

Under Quadratic Quandary (in Just Math) Posted on 2013-11-04 (6 Comments) |

| re: approximate - exact by Jer (2013-11-04 15:49:37) |

| approximate by Jer (2013-11-04 15:43:48) |

Under Two ways (in Just Math) Posted on 2013-10-31 (2 Comments) |

| Solution by Jer (2013-11-01 08:18:40) |

Under End Breadth (in Science) Posted on 2013-10-29 (1 Comments) |

| form vs function by Jer (2013-10-29 14:52:14) |

Under Forty-five Product (in Just Math) Posted on 2013-10-28 (2 Comments) |

| Solution by Jer (2013-10-28 15:05:15) |

Under In and Out (in Geometry) Posted on 2013-10-24 (2 Comments) |

| Two more complicated proofs. by Jer (2013-10-25 09:10:13) |

| Proof by Jer (2013-10-24 14:19:49) |

Under Sum of Cubes (in Numbers) Posted on 2013-10-23 (5 Comments) |

| re: No Subject by Jer (2013-10-26 00:10:59) |

Under Knaves! 2 (in Liars and Knights) Posted on 2013-10-22 (1 Comments) |

| Easy but interesting solution. by Jer (2013-10-22 13:49:12) |

Under Five by Five (in Numbers) Posted on 2013-10-21 (2 Comments) |

| re: modular solution by Jer (2013-10-22 13:54:30) |

Under Just prove it (in Just Math) Posted on 2013-10-20 (4 Comments) |

| Musing on possible lines of attack by Jer (2013-10-23 08:55:08) |

Under DoDeCaGon (in Shapes) Posted on 2013-10-18 (4 Comments) |

| re: No Subject by Jer (2013-10-18 10:56:29) |

Under No multiplication allowed (in Numbers) Posted on 2013-10-17 (8 Comments) |

| Not the way you intended. by Jer (2013-10-17 15:48:58) |

Under Trigo computation (in Numbers) Posted on 2013-10-11 (1 Comments) |

| Not exactly D1 solution by Jer (2013-10-11 16:49:43) |

Under Quintic Expression (in Just Math) Posted on 2013-10-09 (8 Comments) |

| More evidence. by Jer (2013-10-10 11:44:04) |

| Easy way out by Jer (2013-10-09 11:39:22) |

Under Restore from scratches (in Numbers) Posted on 2013-10-08 (2 Comments) |

| In retrospect - spoiler by Jer (2013-10-08 13:57:09) |

Under Powering (in Just Math) Posted on 2013-10-05 (5 Comments) |

| re: this does it by Jer (2013-10-08 09:45:05) |

| re: possible solution by Jer (2013-10-07 09:59:24) |

Under Feisty Fifty-six (in Just Math) Posted on 2013-10-04 (5 Comments) |

| By hand method by Jer (2013-10-04 16:11:41) |

Under Non existing altitudes (in Geometry) Posted on 2013-10-03 (4 Comments) |

| extension: Altitude inequality. by Jer (2013-10-04 09:13:46) |

| My (slightly different) way by Jer (2013-10-04 09:07:31) |

Under Listing cubes (in Numbers) Posted on 2013-10-01 (3 Comments) |

| A start by Jer (2013-10-01 14:15:42) |

Under Warm/Cool Number Guessing (in Numbers) Posted on 2013-09-30 (6 Comments) |

| re: How does the game end? by Jer (2013-10-02 13:09:12) |

| re: A limit by Jer (2013-10-01 15:55:08) |

Under Rhomboctagon (in Geometry) Posted on 2013-09-28 (1 Comments) |

| Solutions by Jer (2013-09-28 15:44:39) |

Under Shared Vertex (in Geometry) Posted on 2013-09-25 (1 Comments) |

| Coordinatized Solution by Jer (2013-09-27 10:16:15) |

Under Four Cards (in Logic) Posted on 2013-09-20 (3 Comments) |

| Solution by Jer (2013-09-20 10:15:33) |

Under Big areas (in Numbers) Posted on 2013-09-17 (16 Comments) |

| re: att: Charlie by Jer (2013-09-18 11:31:48) |

Under Nominal Expression Sum (in Just Math) Posted on 2013-09-17 (4 Comments) |

| Full solution by Jer (2013-09-17 10:21:15) |

Under Subscript Substitution (in Just Math) Posted on 2013-09-16 (1 Comments) |

| Spoiler and commentary by Jer (2013-09-16 13:59:00) |

Under Score Degree Deduction (in Just Math) Posted on 2013-09-14 (1 Comments) |

| No Subject by Jer (2013-09-14 13:14:44) |

Under Mysterious Sequence (in Sequences) Posted on 2013-09-11 (3 Comments) |

| Very strong hints by Jer (2013-09-11 12:28:20) |

Under Different Routes (in Logic) Posted on 2013-09-09 (2 Comments) |

| Simplified solution by Jer (2013-09-09 14:12:50) |

Under Sum of Chords (in Geometry) Posted on 2013-09-07 (1 Comments) |

| Solution by Jer (2013-09-07 13:30:53) |

Under Two top targets (in Numbers) Posted on 2013-09-06 (2 Comments) |

| Solution by Jer (2013-09-06 10:45:10) |

Under Expression Ratio (in Just Math) Posted on 2013-09-03 (4 Comments) |

| re: Method Finished by Jer (2013-09-04 13:57:20) |

| Method by Jer (2013-09-04 13:28:20) |

Under NegaFibo series (in Numbers) Posted on 2013-08-29 (2 Comments) |

| Solution by Jer (2013-08-29 13:57:50) |

Under Dodecagonal Diagonals (in Shapes) Posted on 2013-08-22 (1 Comments) |

| Solution by Jer (2013-08-23 20:17:56) |

Under Tread Ware (in General) Posted on 2013-08-20 (4 Comments) |

| Max dist, no plan. by Jer (2013-08-20 11:19:35) |

Under Rectangle to Square (in Geometry) Posted on 2013-08-13 (9 Comments) |

| re(2): Full solution by Jer (2013-08-15 18:05:40) |

| Full solution by Jer (2013-08-15 13:12:13) |

| One way by Jer (2013-08-13 14:47:52) |

Under Squarely Sorted (in Numbers) Posted on 2013-07-27 (4 Comments) |

| re: answer with proof / neater & corrected by Jer (2013-07-27 14:14:38) |

Under Prince Rupert's Tetrahedron (in Shapes) Posted on 2013-07-21 (2 Comments) |

| 2-d solution by Jer (2013-07-27 14:36:39) |

Under Simple Thinking (in Numbers) Posted on 2013-07-09 (2 Comments) |

| Simple answer by Jer (2013-07-09 11:06:05) |

Under Parallelogram Requirement (in Geometry) Posted on 2013-07-07 (1 Comments) |

| Proof. No picture. by Jer (2013-07-09 11:00:04) |

Under Concyclic Points of Tangency (in Geometry) Posted on 2013-07-02 (2 Comments) |

| Solution by Jer (2013-07-04 01:27:18) |

Under Digital Factorial (in Numbers) Posted on 2013-07-01 (2 Comments) |

| One way to reach a solution. by Jer (2013-07-01 11:20:38) |

Under My uncle's habits (in Probability) Posted on 2013-06-28 (4 Comments) |

| First two days manually by Jer (2013-06-29 15:03:34) |

Under Words, words, numbers (in Word Problems) Posted on 2013-06-21 (2 Comments) |

| re: computer findings by Jer (2013-06-23 00:47:15) |

Under Three Bricklayers (in Just Math) Posted on 2013-06-21 (4 Comments) |

| re: answer - spoiler - better answer by Jer (2013-06-21 12:38:50) |

Under Shiny Numbers (in Just Math) Posted on 2013-06-20 (6 Comments) |

| First steps to proof by Jer (2013-06-21 10:05:40) |

Under Any others? (in Numbers) Posted on 2013-06-18 (9 Comments) |

| re(4): Solution - flaw? by Jer (2013-06-19 23:20:07) |

| re: Solution - flaw? by Jer (2013-06-18 18:15:33) |

| Solution by Jer (2013-06-18 12:11:52) |

Under Four Equal Triangles (in Geometry) Posted on 2013-06-16 (3 Comments) |

| re(2): Solution by Jer (2013-06-17 15:13:56) |

| Solution by Jer (2013-06-16 22:34:58) |

Under Divisibility of N (in Numbers) Posted on 2013-06-15 (4 Comments) |

| re: No Subject by Jer (2013-06-15 19:14:50) |

Under Lion and Tamer (in Logic) Posted on 2013-06-10 (7 Comments) |

| Outsmarting the tamer by Jer (2013-06-11 14:22:02) |

Under Adjacent Square Sum II (in Just Math) Posted on 2013-06-10 (5 Comments) |

| More generalizations of the algebra by Jer (2013-06-10 15:28:26) |

| The algebra by Jer (2013-06-10 14:15:21) |

Under Divisibility and Digit Sum (in Just Math) Posted on 2013-06-07 (8 Comments) |

| re(2): Solution by Jer (2013-06-07 13:39:37) |

| Solution by Jer (2013-06-07 10:25:26) |

Under B & G (in Logic) Posted on 2013-06-03 (1 Comments) |

| Solution by Jer (2013-06-03 12:52:49) |

Under Mean Distance Two Points (in Shapes) Posted on 2013-06-01 (8 Comments) |

| re(3): Part 2 in two different ways. by Jer (2013-06-02 11:59:58) |

| Part 2 in two different ways. by Jer (2013-06-02 01:10:39) |

Under Strings of Nines (in Numbers) Posted on 2013-05-29 (2 Comments) |

| re: a d1 answer (+background) by Jer (2013-05-29 12:37:31) |

Under High Scorer (in General) Posted on 2013-05-21 (11 Comments) |

| Diagonal line. by Jer (2013-05-22 12:41:25) |

| Solution by Jer (2013-05-21 15:41:58) |

Under Simple expression but difficult answer (in Just Math) Posted on 2013-05-21 (2 Comments) |

| Long algebra solution by Jer (2013-05-21 14:11:23) |

Under Adjacent Square Sum (in Just Math) Posted on 2013-05-20 (3 Comments) |

| Easy way by Jer (2013-05-20 12:29:32) |

Under Divisibility of 29 (in Numbers) Posted on 2013-05-15 (4 Comments) |

| A curious and interesting number. by Jer (2013-05-21 15:53:26) |

| Rest of solution by Jer (2013-05-15 12:40:39) |

| Solutions I can find (partial solution) by Jer (2013-05-15 12:25:00) |

Under Distance to Diagonal (in Geometry) Posted on 2013-05-14 (6 Comments) |

| re: Typo in problem statement by Jer (2013-05-16 00:38:14) |

| re: Simple Trigonometry (spoiler) by Jer (2013-05-14 16:01:20) |

Under Diophantine Equation (in Just Math) Posted on 2013-05-14 (1 Comments) |

| This should work by Jer (2013-05-14 12:45:34) |

Under Lovely Fibonacci (in Just Math) Posted on 2013-05-11 (2 Comments) |

| Counterexamples by Jer (2013-05-13 13:54:05) |

Under Four Reals (in Numbers) Posted on 2013-05-10 (1 Comments) |

| Easy way by Jer (2013-05-10 12:05:59) |

Under Triangle from Perimeter (in Geometry) Posted on 2013-05-04 (3 Comments) |

| Didn't solve fully but interesting result. by Jer (2013-05-09 13:10:44) |

Under Colorful Win (in Games) Posted on 2013-05-02 (4 Comments) |

| Another try by Jer (2013-05-03 11:21:21) |

| Move-counter move by Jer (2013-05-02 13:52:11) |

Under Generalize (in Numbers) Posted on 2013-05-01 (5 Comments) |

| Can you prove it? by Jer (2013-05-02 09:22:50) |

Under Three in, one out (in Just Math) Posted on 2013-04-29 (5 Comments) |

| I've done something wrong. by Jer (2013-04-29 14:04:46) |

Under Fifthing the quart (in Just Math) Posted on 2013-04-28 (2 Comments) |

| Some (all?) by Jer (2013-05-01 15:00:18) |

Under Dark Divisibility (in Just Math) Posted on 2013-04-27 (21 Comments) |

| re(2): Infinite examples, no proof yet. by Jer (2013-04-29 12:49:14) |

| Infinite examples, no proof yet. by Jer (2013-04-28 12:41:10) |

Under Equaliteral Triangle Division (in Shapes) Posted on 2013-04-25 (5 Comments) |

| re: I can do this! (spoiler) by Jer (2013-04-29 12:55:44) |

Under Winning Chance (in Probability) Posted on 2013-04-24 (3 Comments) |

| Solution by Jer (2013-04-24 12:17:02) |

Under Circular Billiards Table (in Geometry) Posted on 2013-04-23 (6 Comments) |

| re(2): Playing with Geometers' Sketchpad -- a method by Jer (2013-04-24 12:49:34) |

Under 2012 sum Digit (in Just Math) Posted on 2013-04-23 (4 Comments) |

| re: Grade inflation by Jer (2013-04-23 13:32:31) |

Under Non-arithmetic Triplets (in General) Posted on 2013-04-08 (9 Comments) |

| re(3): Counting Up by Jer (2013-04-09 00:46:52) |

| re: Counting Up by Jer (2013-04-08 16:01:02) |

Under Area of hexagon... (in Geometry) Posted on 2013-04-06 (1 Comments) |

| A start. by Jer (2013-04-09 15:29:03) |

Under Neat Network II (in General) Posted on 2013-04-05 (4 Comments) |

| A good browse. by Jer (2013-04-05 22:10:41) |

Under Mission impossible (in Just Math) Posted on 2013-04-03 (5 Comments) |

| re(2): Not achieved (spoiler)......hinting by Jer (2013-04-03 13:23:24) |

| Not achieved (spoiler) by Jer (2013-04-03 11:32:42) |

Under Finding Average (in Logic) Posted on 2013-04-01 (9 Comments) |

| re(2): D1 says ultimate simplicity. by Jer (2013-04-02 11:14:59) |

| One solution (and a simple variation) by Jer (2013-04-01 11:22:19) |

Under Pentagon Ratio (in Shapes) Posted on 2013-03-30 (2 Comments) |

| Solution. by Jer (2013-04-01 13:06:07) |

Under Mileage Muse (in Numbers) Posted on 2013-03-26 (7 Comments) |

| re(2): Part 1 with no reset by Jer (2013-03-27 08:03:16) |

| A solution for 2 (button pressing) by Jer (2013-03-26 14:08:40) |

| Part 1 with no reset by Jer (2013-03-26 12:49:55) |

| re: Part 1 only by Jer (2013-03-26 12:37:12) |

Under Conga Primes (in Numbers) Posted on 2013-03-23 (11 Comments) |

| Are there solutions? by Jer (2013-03-25 22:08:49) |

Under So many ways.... (in Numbers) Posted on 2013-03-21 (3 Comments) |

| Some short answers by Jer (2013-03-21 14:55:59) |

Under Equal Segments (in Geometry) Posted on 2013-03-20 (2 Comments) |

| Solution by Jer (2013-03-20 22:18:31) |

Under Inequality challenged (in Just Math) Posted on 2013-03-19 (1 Comments) |

| I think I got it. by Jer (2013-03-20 12:54:06) |

Under Four Coin Theorem (in Shapes) Posted on 2013-03-17 (2 Comments) |

| Almost there by Jer (2013-03-18 12:32:26) |

Under Homophones Misrepresented (in Word Problems) Posted on 2013-03-06 (3 Comments) |

| No Subject by Jer (2013-03-07 09:19:46) |

Under Ceiling and Floor Formulation (in Algorithms) Posted on 2013-03-04 (6 Comments) |

| re(2): Solution? by Jer (2013-03-04 23:12:21) |

| Solution? by Jer (2013-03-04 14:46:40) |

Under Math spelling (in Word Problems) Posted on 2013-03-04 (9 Comments) |

| re: Quick guess and some other ideas. by Jer (2013-03-04 12:21:04) |

Under Intriguing Integral Illation (in Calculus) Posted on 2013-03-02 (6 Comments) |

| exact solution another way by Jer (2013-03-03 23:10:34) |

| Partial answer - solution later by Jer (2013-03-03 02:28:51) |

Under Quarting the cube (in Just Math) Posted on 2013-02-28 (6 Comments) |

| Solution - no cube spotted by Jer (2013-03-01 09:22:59) |

Under Geometric Generalization (in Probability) Posted on 2013-02-28 (6 Comments) |

| Corrected solution by Jer (2013-02-28 11:30:27) |

| Solution and most of bonus by Jer (2013-02-28 10:54:38) |

Under Touching polygons (in Shapes) Posted on 2013-02-27 (5 Comments) |

| re: Triangular reply (partial spoiler by Jer (2013-02-28 11:45:25) |

Under Liar Lock (in Liars and Knights) Posted on 2013-02-26 (5 Comments) |

| Unorthodox Solution by Jer (2013-02-26 12:28:12) |

Under Magical Magician (in Numbers) Posted on 2013-02-23 (6 Comments) |

| re(2): Simplest w r o n g...answer by Jer (2013-02-23 16:41:21) |

| Simplest answer by Jer (2013-02-23 13:51:54) |

Under Point to 2013 (2) (in Just Math) Posted on 2013-02-22 (2 Comments) |

| Outline of analytic solution by Jer (2013-02-23 17:06:46) |

Under Reasonable Root ? (in Just Math) Posted on 2013-02-17 (2 Comments) |

| Seems to me... by Jer (2013-02-17 19:19:06) |

Under Composite Contemplation (in Just Math) Posted on 2013-02-16 (3 Comments) |

| re: spoiler by Jer (2013-02-17 22:13:01) |

Under Triangle Perimeters (in Shapes) Posted on 2013-02-13 (6 Comments) |

| Poor wording by Jer (2013-02-14 09:10:56) |

| re: Resist by Jer (2013-02-13 23:14:04) |

Under Fifteen Frolic (in Games) Posted on 2013-02-12 (2 Comments) |

| Mimimum moves (computer aided) by Jer (2013-02-15 11:42:51) |

| First part by Jer (2013-02-15 11:19:22) |

Under Cans in a cooler (in Shapes) Posted on 2013-02-11 (3 Comments) |

| An interactive Wolfram Demonstration by Jer (2016-08-04 22:10:34) |

| A picture by Jer (2013-02-13 13:01:31) |

Under Consecutive Contemplation II (in Sequences) Posted on 2013-02-10 (2 Comments) |

| An example by Jer (2013-02-11 14:58:35) |

| A guess by Jer (2013-02-11 14:49:11) |

Under Commemorations (in Weights and Scales) Posted on 2013-02-06 (7 Comments) |

| re: A misread? by Jer (2013-02-06 23:04:42) |

Under A false claim (in Numbers) Posted on 2013-02-05 (2 Comments) |

| Interesting by Jer (2013-02-06 12:33:29) |

Under Midpoint problem (in Geometry) Posted on 2013-02-03 (2 Comments) |

| re: Some thoughts / tediousness by Jer (2013-02-04 13:48:42) |

Under Geometric Parabola (in Geometry) Posted on 2013-02-02 (6 Comments) |

| re(4): A note about the problem. by Jer (2013-02-04 16:25:40) |

| re(2): A note about the problem. by Jer (2013-02-03 19:40:35) |

| A note about the problem. by Jer (2013-02-03 01:17:48) |

| Calculus solution by Jer (2013-02-03 01:12:43) |

Under Arrangements count (in Just Math) Posted on 2013-01-31 (2 Comments) |

| Essentially by Jer (2013-01-31 16:45:38) |

Under Cubing the square (in Just Math) Posted on 2013-01-30 (8 Comments) |

| found y, got bonus by Jer (2013-01-30 14:51:54) |

| x, not y but some thoughts by Jer (2013-01-30 14:33:57) |

Under Planetary Perception (in Word Problems) Posted on 2013-01-30 (14 Comments) |

| Last one. by Jer (2013-01-30 15:28:02) |

Under Group Endeavor (in General) Posted on 2013-01-29 (8 Comments) |

| Deductions and a careful reading. by Jer (2013-01-29 15:12:40) |

Under The 73rd digit (in Numbers) Posted on 2013-01-29 (3 Comments) |

| Solution with D1 explanation by Jer (2013-01-29 12:22:18) |

Under Greetings from P (in Sequences) Posted on 2013-01-24 (5 Comments) |

| re(2): P is for what? by Jer (2013-01-25 09:18:28) |

| P is for what? by Jer (2013-01-24 16:52:10) |

Under Penny Drop (in Science) Posted on 2013-01-17 (6 Comments) |

| Eureka! by Jer (2013-01-17 16:37:32) |

Under A chain of odds (in Numbers) Posted on 2013-01-11 (2 Comments) |

| Interesting cube by Jer (2013-01-11 13:58:41) |

Under Point to 2013 (in Just Math) Posted on 2013-01-09 (7 Comments) |

| re(2): With computer by Jer (2013-01-09 13:40:49) |

Under Square from four points (in Geometry) Posted on 2013-01-08 (5 Comments) |

| When it's not possible. by Jer (2013-01-10 11:27:52) |

| Analytic beginning. by Jer (2013-01-09 13:48:50) |

Under Triple 8 (in Numbers) Posted on 2013-01-08 (9 Comments) |

| re(4): Observation by Jer (2013-01-11 14:01:08) |

| re(2): Observation by Jer (2013-01-10 13:42:14) |

| Observation by Jer (2013-01-08 12:49:12) |

Under Fifth powers (in Just Math) Posted on 2013-01-06 (8 Comments) |

| re(2): Assuming... by Jer (2013-01-07 12:53:05) |

| re: my way by Jer (2013-01-07 12:45:56) |

| Assuming... by Jer (2013-01-06 19:04:30) |

Under Die Order (in Probability) Posted on 2013-01-04 (7 Comments) |

| Solution by Jer (2013-01-04 14:02:54) |

Under Accurate Association (in Logic) Posted on 2013-01-03 (3 Comments) |

| A solution by Jer (2013-01-03 11:03:12) |

Under Divisibility of factorials II (in Numbers) Posted on 2013-01-01 (2 Comments) |

| n=5 like part 1 by Jer (2013-01-02 13:40:19) |

Under Divisibility of factorials (in Numbers) Posted on 2012-12-29 (1 Comments) |

| A start. by Jer (2012-12-29 23:32:15) |

Under Perpendicular (in Geometry) Posted on 2012-12-26 (5 Comments) |

| Very short version of analytic solution by Jer (2012-12-26 23:49:36) |

Under Dollars and Cents II (in Just Math) Posted on 2012-12-19 (5 Comments) |

| re(2): No brute force solution by Jer (2012-12-20 11:50:56) |

| No brute force solution by Jer (2012-12-19 14:04:32) |

Under Five Fives Fancy Formula (in Just Math) Posted on 2012-12-17 (4 Comments) |

| re: another form of the answer - nope by Jer (2012-12-18 13:59:18) |

Under Ratio Resolution III (in Weights and Scales) Posted on 2012-12-14 (2 Comments) |

| alternate solution by Jer (2012-12-14 16:10:35) |

Under Exp=log (in Just Math) Posted on 2012-12-12 (9 Comments) |

| re(3): possible solution--correction by Jer (2012-12-13 11:13:02) |

Under Subtractive years (in Numbers) Posted on 2012-12-12 (6 Comments) |

| Millennial question by Jer (2012-12-13 10:57:17) |

| By calculator program by Jer (2012-12-12 12:35:15) |

Under Go count (in Numbers) Posted on 2012-12-11 (6 Comments) |

| Solution by Jer (2012-12-11 12:59:39) |

Under My new sequence (in Sequences) Posted on 2012-12-08 (6 Comments) |

| Stronger hint by Jer (2018-04-22 11:25:13) |

| Hint. by Jer (2012-12-09 20:41:35) |

Under Pyramid Maneuver (in Geometry) Posted on 2012-12-06 (4 Comments) |

| re(2): No trig soluiton by Jer (2012-12-10 13:51:01) |

| No trig soluiton by Jer (2012-12-07 11:44:59) |

Under GCD of Fibonacci (in Numbers) Posted on 2012-12-06 (2 Comments) |

| Is it this simple? by Jer (2012-12-06 10:41:31) |

Under One equation with nine unknowns! (2) (in Numbers) Posted on 2012-12-05 (3 Comments) |

| re: computer solution by Jer (2012-12-05 12:49:10) |

Under Two Dominoes (in Probability) Posted on 2012-12-04 (1 Comments) |

| Solution by Jer (2012-12-04 13:10:45) |

Under Intersection of Bisectors (in Geometry) Posted on 2012-12-01 (2 Comments) |

| Proof. by Jer (2012-12-03 13:56:48) |

| From sketchpad. No proof. by Jer (2012-12-03 13:10:40) |

Under Twelve Period Tease (in Just Math) Posted on 2012-11-30 (5 Comments) |

| re: This may be right (Why it isn't.) by Jer (2012-12-01 00:35:54) |

| This may be right by Jer (2012-11-30 11:11:06) |

Under A square is a cube (in Numbers) Posted on 2012-11-29 (2 Comments) |

| Answer by Jer (2012-11-29 11:27:27) |

Under Ratio Resolution II (in Just Math) Posted on 2012-11-24 (3 Comments) |

| I think I got it. by Jer (2012-11-25 00:03:57) |

Under 5 partitions (in Just Math) Posted on 2012-11-21 (3 Comments) |

| By hand by Jer (2012-11-21 13:19:35) |

Under Corner Commencement (in Word Problems) Posted on 2012-11-19 (2 Comments) |

| Solution by Jer (2012-11-19 12:26:19) |

Under Peculiar pentagon (in Geometry) Posted on 2012-11-15 (1 Comments) |

| General Proof by Jer (2012-11-15 11:09:03) |

Under 2-way traffic (in Word Problems) Posted on 2012-11-14 (7 Comments) |

| I Palindrome I by Jer (2012-11-14 12:51:27) |

Under Consecutive Contemplation (in Numbers) Posted on 2012-11-08 (6 Comments) |

| Not proven yet but I have a guess by Jer (2012-11-08 16:35:18) |

Under Missing digit (in General) Posted on 2012-11-03 (3 Comments) |

| A link by Jer (2012-11-03 22:20:22) |

Under Vampire numbers (in Just Math) Posted on 2012-10-31 (3 Comments) |

| Year in vampire number or fang? by Jer (2012-10-31 12:28:28) |

Under Exploring HCNs (in Numbers) Posted on 2012-10-26 (5 Comments) |

| An idea for 4. by Jer (2012-10-26 16:22:26) |

Under Store Survey (in Just Math) Posted on 2012-10-16 (2 Comments) |

| Another way to think about it (spoiler) by Jer (2012-10-17 12:33:53) |

Under A flawed proof? (2) (in Tricks) Posted on 2012-09-27 (3 Comments) |

| You can't do that by Jer (2012-09-27 10:48:59) |

Under A Pythagorean piglet (in Just Math) Posted on 2012-09-22 (4 Comments) |

| re(2): Oinking solution. by Jer (2012-09-26 12:41:34) |

| Oinking solution. by Jer (2012-09-25 16:17:25) |

Under Though this be madness, yet there is method in it... (in Numbers) Posted on 2012-09-20 (6 Comments) |

| re: Solution by Jer (2012-09-20 22:34:50) |

Under A productive s.o.d. (in Just Math) Posted on 2012-09-19 (5 Comments) |

| re: A start by Jer (2012-09-20 14:00:47) |

| A start by Jer (2012-09-19 18:34:53) |

Under Boxing Baffle (in Logic) Posted on 2012-09-12 (4 Comments) |

| re: computer solution by Jer (2012-09-13 10:54:15) |

Under 440 (in Tricks) Posted on 2012-09-10 (12 Comments) |

| re: Time Solution by Jer (2012-09-11 12:29:27) |

Under Complex Conclusion (in Just Math) Posted on 2012-08-29 (6 Comments) |

| re(2): Playing around on the complex plane. by Jer (2012-08-31 15:48:56) |

| Playing around on the complex plane. by Jer (2012-08-30 16:20:59) |

| Solution by Jer (2012-08-29 13:57:00) |

Under Floor and Absolute (in Calculus) Posted on 2012-08-17 (2 Comments) |

| Solution? by Jer (2012-08-17 14:08:37) |

Under Timely determination II (in Just Math) Posted on 2012-07-13 (4 Comments) |

| One way by Jer (2012-07-13 11:25:46) |

Under Circle in a Prism (in Shapes) Posted on 2012-06-30 (2 Comments) |

| n=3 and n=large by Jer (2012-07-01 14:27:19) |

| n=4 (the easy one) by Jer (2012-07-01 00:29:51) |

Under One is k times the other (in Numbers) Posted on 2012-06-25 (7 Comments) |

| Possible solution by Jer (2012-06-25 12:12:57) |

Under Equal digits (in Numbers) Posted on 2012-06-11 (7 Comments) |

| re(2): Solution (spoiler) Base 12 error by Jer (2012-06-13 12:56:05) |

Under Irrational to Rational (in Just Math) Posted on 2012-06-09 (2 Comments) |

| Two possible n by Jer (2012-06-11 12:31:26) |

Under Fruit prices (in Word Problems) Posted on 2012-06-05 (8 Comments) |

| A semi-sensible solution by Jer (2012-06-05 13:14:29) |

Under Concylic Feet Part 2 (in Geometry) Posted on 2012-05-24 (2 Comments) |

| Observations by Jer (2012-05-24 14:05:14) |

Under Prefix Precision (in Word Problems) Posted on 2012-05-23 (3 Comments) |

| All but #3 by Jer (2012-05-23 12:24:46) |

Under Triangular Crease 789 (in Shapes) Posted on 2012-05-20 (7 Comments) |

| re: 6 solutions (unverified) Only 4 Work by Jer (2012-05-22 14:06:47) |

| 6 solutions (unverified) by Jer (2012-05-22 13:24:41) |

| re: Geometer's Sketchpad Solution by Jer (2012-05-21 13:52:24) |

| Algebra solution by Jer (2012-05-21 13:41:55) |

Under A Prime Triplet (in Numbers) Posted on 2012-05-19 (5 Comments) |

| re: Prime solution (?'s) by Jer (2012-05-19 23:21:10) |

Under Ready, action…,CUT! (in Geometry) Posted on 2012-05-16 (19 Comments) |

| re(5): Here's a picture -in fact two with links by Jer (2012-05-18 08:59:51) |

| Trying another picture by Jer (2012-05-18 00:45:09) |

| Here's a picture. by Jer (2012-05-16 23:06:41) |

| re(2): Solution by Jer (2012-05-16 13:27:58) |

| Pythagorean by Jer (2012-05-16 11:04:00) |

Under Last 2007 digits (in Just Math) Posted on 2012-05-12 (3 Comments) |

| A start by Jer (2012-05-14 09:05:33) |

Under Doubtful Divisibility (in Tricks) Posted on 2012-05-09 (3 Comments) |

| Error(s) spotted by Jer (2012-05-09 12:17:47) |

Under Mirror, mirror (in Numbers) Posted on 2012-05-04 (4 Comments) |

| A quick note and some Links (spoilers) by Jer (2012-05-04 11:21:40) |

Under Lean-to shelter (in Shapes) Posted on 2012-05-03 (5 Comments) |

| re: some thoughts (Clarification.) by Jer (2012-05-03 13:56:42) |

Under A red herring marble (in Logic) Posted on 2012-05-01 (1 Comments) |

| One fish two fish red fish blue fish (solution) by Jer (2012-05-01 12:11:34) |

Under Normal or not? (in Numbers) Posted on 2012-04-29 (3 Comments) |

| I think... by Jer (2012-05-01 12:52:07) |

Under Smart Trams (in Word Problems) Posted on 2012-04-26 (8 Comments) |

| re(2): The two letter word(s?) by Jer (2012-04-27 22:23:35) |

| The two letter word(s?) by Jer (2012-04-27 10:46:05) |

Under No comments (in General) Posted on 2012-04-12 (3 Comments) |

| Hand solution by Jer (2012-04-13 11:03:07) |

Under Four people II (in Logic) Posted on 2012-04-11 (6 Comments) |

| Solution with assumptions by Jer (2012-04-11 12:32:37) |

Under Return to Treasure Island (in General) Posted on 2012-04-05 (14 Comments) |

| I've seen this before so just a hint... by Jer (2012-04-05 22:39:19) |

Under Point to 2012 (in Just Math) Posted on 2012-04-04 (7 Comments) |

| Explaining the arithmetic sequence. by Jer (2012-04-05 13:35:48) |

| Non computer solution (pretty much) by Jer (2012-04-04 13:38:30) |

Under Identifiable Identities (in Cryptography) Posted on 2012-03-31 (6 Comments) |

| Sorry I forgot to tell you. by Jer (2012-03-31 17:25:20) |

Under Lengthy Word (in Word Problems) Posted on 2012-03-29 (4 Comments) |

| re: Solution method by Jer (2012-03-30 14:52:23) |

Under DO MAGIC (in Numbers) Posted on 2012-03-27 (2 Comments) |

| Got it. by Jer (2012-03-27 11:57:46) |

Under From primes to palindrome (in Numbers) Posted on 2012-03-24 (7 Comments) |

| All solutions by Jer (2012-03-24 22:49:03) |

Under I can see the origin from here. (in Calculus) Posted on 2012-03-11 (2 Comments) |

| Part 4 still unsolved by Jer (2012-10-05 10:57:06) |

Under Locus of Intersections (in Geometry) Posted on 2012-03-09 (4 Comments) |

| re(2): Initital exploration by Jer (2012-03-10 00:34:58) |

| Initital exploration by Jer (2012-03-09 12:06:36) |

Under Regular Tetrahedron 1234 (in Shapes) Posted on 2012-03-08 (8 Comments) |

| re(2): Is it possible? by Jer (2012-03-10 00:39:08) |

| re(2): Is it possible? by Jer (2012-03-08 16:45:41) |

| Is it possible? by Jer (2012-03-08 11:31:16) |

Under A Cup Of Coffee II (in Weights and Scales) Posted on 2012-03-06 (11 Comments) |

| How to get 8%? by Jer (2012-03-07 09:12:08) |

Under Matchstick Frenzy II (in Just Math) Posted on 2012-02-26 (6 Comments) |

| General n pile solution with proof by Jer (2012-02-27 12:55:44) |

Under S.o.d . of s.o.d ,,, (in Just Math) Posted on 2012-02-21 (4 Comments) |

| Solution by Jer (2012-02-21 12:12:24) |

Under Decimal base? Of course... (in Tricks) Posted on 2012-02-13 (15 Comments) |

| Well... by Jer (2012-02-13 12:18:10) |

Under Boosted board (in General) Posted on 2012-02-07 (11 Comments) |

| re: Final Answer ?? (spoiler) by Jer (2012-02-09 21:27:41) |

| re: Final Answer? (spoiler) by Jer (2012-02-09 10:47:34) |

| re: Shaky ground? You misunderstand. by Jer (2012-02-08 09:02:35) |

Under Non - Zero Digit II (in Just Math) Posted on 2012-02-05 (7 Comments) |

| re: No Subject by Jer (2012-02-07 12:29:20) |

| The previous two answers by Jer (2012-02-06 13:20:14) |

Under Chess Tournament (in Logic) Posted on 2012-02-03 (2 Comments) |

| Spoiler solution. by Jer (2012-02-03 11:02:56) |

Under Covering a rectangle by circles (in Shapes) Posted on 2012-01-30 (6 Comments) |

| Thoughts by Jer (2012-01-30 12:33:57) |

Under Simultaneous Settlement (in Just Math) Posted on 2012-01-27 (8 Comments) |

| Solution by Jer (2012-01-27 11:10:40) |

Under Odd One Out II (in General) Posted on 2012-01-25 (4 Comments) |

| 2 Possible answers by Jer (2012-01-25 11:37:33) |

Under Logical connectives (in Algorithms) Posted on 2012-01-24 (6 Comments) |

| Solution if I understand the logic of -> and by Jer (2012-01-24 13:58:26) |

Under Yes and no (in Just Math) Posted on 2012-01-21 (1 Comments) |

| musings by Jer (2012-01-22 02:00:19) |

Under Isosceles from Regular (in Shapes) Posted on 2012-01-20 (13 Comments) |

| re(2): Equilateral triangle are certainly isosceles. by Jer (2012-01-21 23:11:16) |

| Equilateral triangle are certainly isosceles. by Jer (2012-01-21 16:18:13) |

| re: Not sure if this is what you want - A rewrite. by Jer (2012-01-21 00:05:43) |

Under 'W'here to Start (in Cryptography) Posted on 2012-01-19 (3 Comments) |

| Some thoughts by Jer (2012-01-20 16:05:01) |

Under Suffix Settlement (in Word Problems) Posted on 2012-01-17 (8 Comments) |

| All but the last by Jer (2012-01-17 11:16:22) |

Under Sum Binary Digits (in Probability) Posted on 2012-01-16 (2 Comments) |

| Counting, hoping I didn't make a mistake. by Jer (2012-01-16 17:32:25) |

Under Integer Forms (in Just Math) Posted on 2012-01-07 (2 Comments) |

| re: Some Observations (partial solution) / The rest by Jer (2012-01-07 20:29:52) |

Under Multi-Birth Convention (in Numbers) Posted on 2012-01-05 (1 Comments) |

| I think this works. by Jer (2012-01-05 12:30:13) |

Under More about 1729 (in Numbers) Posted on 2012-01-04 (8 Comments) |

| re: computer solution by Jer (2012-01-04 13:43:55) |

| Solutions by Jer (2012-01-04 11:27:31) |

Under A repunit number (in Numbers) Posted on 2011-12-26 (5 Comments) |

| re: is there a mistake in the puzzle? by Jer (2011-12-26 11:29:12) |

| Solution by Jer (2011-12-26 11:25:28) |

Under Summing square inverses (in Just Math) Posted on 2011-12-25 (2 Comments) |

| Pen and paper solution by Jer (2011-12-25 17:23:09) |

Under PentaWord 1 (in General) Posted on 2011-12-14 (6 Comments) |

| Probably not solved but a reasonable method by Jer (2011-12-14 11:06:10) |

Under Not sexy! (in Just Math) Posted on 2011-12-13 (1 Comments) |

| Work my way up by Jer (2011-12-13 10:56:07) |

Under Orthogonal Conics (in Geometry) Posted on 2011-12-10 (2 Comments) |

| A single case by Jer (2011-12-12 16:04:11) |

Under Ones or twos (in Just Math) Posted on 2011-12-07 (4 Comments) |

| re(2): Depends what natural numbers are. by Jer (2011-12-07 13:46:59) |

| Depends what natural numbers are. by Jer (2011-12-07 11:02:43) |

Under Four Point Polygons (in Probability) Posted on 2011-12-06 (2 Comments) |

| Almost trivial by Jer (2011-12-06 11:10:30) |

Under Timely determination (in Just Math) Posted on 2011-11-29 (2 Comments) |

| Hmm by Jer (2011-11-29 13:55:03) |

Under Pandigital Multiple (in Probability) Posted on 2011-11-25 (2 Comments) |

| Base 10 by Jer (2011-11-28 16:09:30) |

| Sometimes impossible, not nearly solved by Jer (2011-11-28 11:46:24) |

Under Point to 2011 (in Just Math) Posted on 2011-11-22 (2 Comments) |

| .2011 by Jer (2011-11-22 11:05:43) |

Under Platonic Colors (in Probability) Posted on 2011-11-21 (1 Comments) |

| Formula and solution. No derivation. by Jer (2011-11-21 16:13:44) |

Under Proximo Ultimo Sum (in Sequences) Posted on 2011-11-16 (5 Comments) |

| re: The easy way is turning out to be hard by Jer (2011-11-16 12:05:31) |

| The easy way is turning out to be hard by Jer (2011-11-16 11:22:03) |

Under Frog Frolics (in Numbers) Posted on 2011-11-15 (6 Comments) |

| Some more thoughts and more questions by Jer (2011-11-16 09:07:08) |

| Some thoughts and questions by Jer (2011-11-15 16:07:16) |

Under Some relation! (in Just Math) Posted on 2011-11-11 (10 Comments) |

| re: Solution by Jer (2011-11-11 16:25:44) |

Under Momentous Multiple (in Numbers) Posted on 2011-11-10 (2 Comments) |

| Thoughts by Jer (2011-11-10 13:18:42) |

Under Magic 46 (in Numbers) Posted on 2011-11-03 (2 Comments) |

| too easy by Jer (2011-11-03 11:26:52) |

Under Looking for n (2) (in Numbers) Posted on 2011-11-02 (1 Comments) |

| Solution and a question/request by Jer (2011-11-02 10:56:13) |

Under An extended harmony (in Just Math) Posted on 2011-11-01 (5 Comments) |

| A lower bound and a stab at a solution by Jer (2011-11-01 10:37:54) |

| A simple upper bound by Jer (2011-11-01 10:19:57) |

Under Sense of Discovery (in General) Posted on 2011-10-31 (11 Comments) |

| pairs by Jer (2011-11-06 01:26:05) |

Under Angle of view (in Just Math) Posted on 2011-10-28 (2 Comments) |

| algebra solution by Jer (2011-10-28 13:42:03) |

Under Going Maximum with Geometric (in Just Math) Posted on 2011-10-21 (4 Comments) |

| Analysis and solution by Jer (2011-10-21 16:20:27) |

Under Last three digits (in Just Math) Posted on 2011-10-19 (9 Comments) |

| re(4): two-thirds of a solution. by Jer (2011-10-19 16:02:29) |

| re(2): two-thirds of a solution. by Jer (2011-10-19 13:57:49) |

| two-thirds of a solution. by Jer (2011-10-19 11:08:01) |

Under Three customers (in Logic) Posted on 2011-10-17 (9 Comments) |

| Im having waffles (solution) by Jer (2011-10-17 13:50:05) |

Under 2011 Square End (in Just Math) Posted on 2011-10-06 (3 Comments) |

| an inefficient method. by Jer (2011-10-07 12:28:20) |

Under Multiply Digits, Get Quadratic (in Just Math) Posted on 2011-10-05 (2 Comments) |

| Different solution by Jer (2011-10-05 11:34:16) |

Under Concerning combinatorics (in Numbers) Posted on 2011-10-04 (7 Comments) |

| 1 step further. by Jer (2011-10-05 10:53:14) |

Under Two-digit numbers (in Sequences) Posted on 2011-09-29 (4 Comments) |

| I got it (spoiler.) by Jer (2011-09-29 13:20:14) |

Under Telephone Number Travail (in Just Math) Posted on 2011-09-28 (2 Comments) |

| Solution by Jer (2011-09-28 11:12:07) |

Under Surf City Semiprimes (in Numbers) Posted on 2011-09-27 (4 Comments) |

| I don't think it's true. Maybe I do. by Jer (2011-09-27 11:13:57) |

Under 1000 ways (in Numbers) Posted on 2011-09-23 (5 Comments) |

| re: Making inside info public: Hint (credit to Jer) by Jer (2011-09-23 23:35:17) |

Under Sum Month and Day II (in General) Posted on 2011-09-20 (4 Comments) |

| part 3 and maybe 2 by Jer (2011-09-20 11:26:47) |

Under 2011 Square Start (in Just Math) Posted on 2011-09-16 (5 Comments) |

| A method by Jer (2011-09-16 12:45:25) |

Under Lucky seven V (in Just Math) Posted on 2011-09-13 (3 Comments) |

| Outline of non-computer solution by Jer (2011-09-14 11:03:47) |

Under Five out of one (in Geometry) Posted on 2011-09-06 (3 Comments) |

| (almost) complete analysis by Jer (2011-09-06 13:01:30) |

Under Factorial Remainder (in Just Math) Posted on 2011-09-02 (9 Comments) |

| Trying to avoid 98 mods... by Jer (2011-09-02 14:56:06) |

Under Melting the ice (in General) Posted on 2011-09-01 (12 Comments) |

| 3 solutions by Jer (2011-09-01 14:09:54) |

Under It is not hard (in Word Problems) Posted on 2011-08-29 (8 Comments) |

| re: The only way I can see it... by Jer (2011-08-29 17:23:51) |

Under Sum of Ratios (in Geometry) Posted on 2011-08-25 (2 Comments) |

| Unproven answer. by Jer (2011-08-25 13:58:29) |

Under a!+ b!+ c!= abc – a (in Just Math) Posted on 2011-08-14 (1 Comments) |

| One triplet by Jer (2011-08-21 01:35:05) |

Under 59 in one way (in Numbers) Posted on 2011-08-13 (7 Comments) |

| re(2): Solution by Jer (2011-08-21 20:22:13) |

| Solution by Jer (2011-08-21 01:28:14) |

Under Floors and decimals integral II (in Calculus) Posted on 2011-07-21 (3 Comments) |

| Solution for m=n=2 by Jer (2011-07-25 19:03:12) |

| Solution to a lower dimension. by Jer (2011-07-25 00:11:00) |

Under S-olve T-his (in Word Problems) Posted on 2011-07-17 (4 Comments) |

| re(2): All except R by Jer (2011-07-18 00:08:49) |

Under Three spheres (in Geometry) Posted on 2011-07-08 (1 Comments) |

| Possible 3 sphere solution. by Jer (2011-07-11 02:02:46) |

Under Missing Hexadecimal Digits (in Just Math) Posted on 2011-06-18 (2 Comments) |

| What is wrong? by Jer (2011-06-21 10:47:33) |

Under By all means (in Just Math) Posted on 2011-06-16 (5 Comments) |

| ths time by vectors by Jer (2011-06-16 15:54:07) |

| Another trigonometry way (this is too fun) by Jer (2011-06-16 15:35:29) |

| A more calculus way by Jer (2011-06-16 15:17:30) |

| A geometry + calculus way by Jer (2011-06-16 15:02:15) |

| A trigonometry way by Jer (2011-06-16 14:49:38) |

Under Sum number equals integer (in Numbers) Posted on 2011-06-11 (5 Comments) |

| A start, by Jer (2011-06-14 02:03:15) |

Under Missing digits (in Just Math) Posted on 2011-06-06 (8 Comments) |

| D5 simpler by Jer (2011-06-07 10:16:13) |

| A few by hand by Jer (2011-06-06 15:07:01) |

Under Fortieth logs (in Just Math) Posted on 2011-05-31 (15 Comments) |

| Who is right for 7? by Jer (2011-06-01 15:08:08) |

| re(2): A start (spoiler) by Jer (2011-05-31 17:06:27) |

Under A well-defined age (in Just Math) Posted on 2011-05-23 (2 Comments) |

| solution by Jer (2011-05-23 14:56:32) |

Under Successively incident (in Just Math) Posted on 2011-05-18 (2 Comments) |

| Hand solution by Jer (2011-05-19 10:32:02) |

Under How young is he? (in Just Math) Posted on 2011-05-16 (2 Comments) |

| solution by Jer (2011-05-16 14:57:48) |

Under Sum Remainder Deduction (in Just Math) Posted on 2011-05-14 (1 Comments) |

| Long Solution by Jer (2011-05-17 17:25:57) |

Under Terminating in three 8s (in Just Math) Posted on 2011-05-11 (3 Comments) |

| unaided solution by Jer (2011-05-11 15:29:26) |

Under 1 penny / 1 die (in Probability) Posted on 2011-05-06 (5 Comments) |

| re: standard deviations -- of course -- by Jer (2011-05-08 00:18:22) |

| re: some solutions, but not sure about standard deviations by Jer (2011-05-06 15:52:41) |

Under Concurrent Cevians (in Geometry) Posted on 2011-05-03 (3 Comments) |

| with different givens by Jer (2011-05-03 14:59:03) |

Under Inversely Irrational (in Just Math) Posted on 2011-05-01 (1 Comments) |

| Inverse? by Jer (2011-05-02 15:11:04) |

Under S.O.S. partition needed!! (in Just Math) Posted on 2011-04-23 (1 Comments) |

| abcde by Jer (2011-04-25 10:59:05) |

Under Limiting Ratio (in Calculus) Posted on 2011-04-22 (3 Comments) |

| easy/hard by Jer (2011-04-22 14:40:04) |

Under Random number sequence (in Probability) Posted on 2011-04-20 (2 Comments) |

| re: Simple enough by Jer (2011-04-21 01:26:53) |

| Simple enough by Jer (2011-04-21 01:24:22) |

Under Unconsecutive-summables (in Numbers) Posted on 2011-04-14 (3 Comments) |

| re: possible solution by Jer (2011-04-15 00:22:27) |

Under Odd and Integer Zeros (in Just Math) Posted on 2011-04-13 (4 Comments) |

| re: Question... by Jer (2011-04-13 15:08:53) |

Under Lattice Point as Centroid (in Geometry) Posted on 2011-04-10 (8 Comments) |

| re(2): One Solution (spoiler) by Jer (2011-04-11 11:40:09) |

Under Find the area (in Numbers) Posted on 2011-04-08 (5 Comments) |

| Hyperbolic solution. Seems to work. by Jer (2011-04-08 15:16:18) |

Under My favorite numbers VII (in Just Math) Posted on 2011-04-06 (3 Comments) |

| Is it really this easy? by Jer (2011-04-06 15:09:44) |

Under The median is shorter (in Geometry) Posted on 2011-04-04 (1 Comments) |

| solution by Jer (2011-04-04 15:10:47) |

Under Almost equal (in Just Math) Posted on 2011-04-01 (10 Comments) |

| Now I remember the D1 way. by Jer (2011-04-01 16:51:05) |

| I must be doing something wrong. by Jer (2011-04-01 16:37:48) |

Under Sequence Group V (in Just Math) Posted on 2011-03-31 (4 Comments) |

| Have to start somewhere. by Jer (2011-04-05 02:00:21) |

Under Back to the base (in Numbers) Posted on 2011-03-30 (3 Comments) |

| Derivation by Jer (2011-03-30 22:39:18) |

Under Powerful Digit (in Probability) Posted on 2011-03-29 (12 Comments) |

| re: An attempt as (3), but it looks wrong according to simulation by Jer (2011-03-30 14:10:39) |

| re: part (1) not so hard after all (spoiler) by Jer (2011-03-30 10:01:43) |

Under All or Exactly Two (in Geometry) Posted on 2011-03-27 (5 Comments) |

| Some thoughts by Jer (2011-03-27 23:56:40) |

Under 2011 Powered Digits (in Just Math) Posted on 2011-03-25 (5 Comments) |

| re: The Broll guesses... by Jer (2011-03-25 14:28:25) |

Under Twice true (in Numbers) Posted on 2011-03-24 (3 Comments) |

| full solution by Jer (2011-03-24 11:09:02) |

Under Incenter Assignment (in Geometry) Posted on 2011-03-23 (4 Comments) |

| re(2): Solution. Hope this makes sense. by Jer (2011-03-23 17:03:55) |

| Solution. Hope this makes sense. by Jer (2011-03-23 13:31:32) |

Under Numerous Numeral Enumeration (in Just Math) Posted on 2011-03-20 (10 Comments) |

| re(2): Solution of simple problem by Jer (2011-03-21 17:31:24) |

| Solution of simple problem by Jer (2011-03-21 14:12:28) |

| re(2): Initial thoughts. by Jer (2011-03-21 14:07:59) |

| Initial thoughts. by Jer (2011-03-21 01:00:07) |

Under Powerful Couple (in Probability) Posted on 2011-03-16 (6 Comments) |

| re(2): exploration turned up something strange by Jer (2011-03-17 13:58:24) |

| exploration turned up something strange by Jer (2011-03-16 14:14:58) |

Under Partition a Square (in Shapes) Posted on 2011-03-15 (2 Comments) |

| Spoiler. by Jer (2011-03-16 09:16:12) |

Under Domino Polygons (in Probability) Posted on 2011-03-14 (5 Comments) |

| re: 25! (Eureka!) by Jer (2011-03-15 16:05:20) |

Under Neither 3 nor 6 (in Just Math) Posted on 2011-03-11 (6 Comments) |

| re(2): Part a only (spoiler) by Jer (2011-03-14 09:11:42) |

Under Hill Numbers Settlement II (in Probability) Posted on 2011-03-09 (5 Comments) |

| possible solution by Jer (2011-03-09 14:58:17) |

Under Two happy ends (in Just Math) Posted on 2011-03-07 (11 Comments) |

| re(3): solution NOT enough by Jer (2011-03-08 10:08:47) |

| solution enough by Jer (2011-03-07 14:32:20) |

Under a) is easy, b) is not (in Just Math) Posted on 2011-02-18 (8 Comments) |

| My error - why we disagree on part 1 by Jer (2011-02-19 17:57:58) |

| Why a) is easy... by Jer (2011-02-18 16:51:57) |

Under Upgrade to 13 (in Weights and Scales) Posted on 2011-02-16 (4 Comments) |

| Almost solution. by Jer (2011-02-17 18:16:48) |

Under Sum Supplement Settlement (in Geometry) Posted on 2011-02-12 (2 Comments) |

| Not a simple solution. by Jer (2011-02-15 11:11:14) |

Under The Natives of Calendria (in Liars and Knights) Posted on 2011-02-10 (3 Comments) |

| Analysis & solution by Jer (2011-02-10 18:04:29) |

Under Reloading the Dice (in Probability) Posted on 2011-01-20 (10 Comments) |

| Complete proof finished. by Jer (2011-01-24 16:44:44) |

| re(2): A further improvement by Jer (2011-01-24 16:31:50) |

| A further improvement by Jer (2011-01-20 20:00:10) |

| possible solution by Jer (2011-01-20 18:11:52) |

Under Two ellipses (in Geometry) Posted on 2011-01-19 (3 Comments) |

| 3 ellipses is as bad as I thought. by Jer (2011-01-20 16:52:19) |

| Possible solution with two ellipses. by Jer (2011-01-19 13:10:54) |

Under A sequence (in Sequences) Posted on 2011-01-14 (3 Comments) |

| re: who's counting? by Jer (2011-01-14 17:25:25) |

Under I WONDER (in Logic) Posted on 2011-01-13 (10 Comments) |

| Divisibility in any base. by Jer (2011-01-13 15:28:43) |

Under Scarce primes (in Numbers) Posted on 2011-01-10 (10 Comments) |

| re(2): proof by Jer (2011-01-11 10:18:20) |

| proof by Jer (2011-01-10 15:01:43) |

Under Lucky seven III (in Just Math) Posted on 2011-01-05 (4 Comments) |

| With only a little cheating by Jer (2011-01-05 14:58:35) |

Under 5 Digit Number II (in Numbers) Posted on 2011-01-03 (4 Comments) |

| re(2): A start. by Jer (2011-01-04 11:04:31) |

| A start. by Jer (2011-01-03 15:13:28) |

Under Around the ring (in Shapes) Posted on 2010-12-20 (9 Comments) |

| re(2): part 1 not finished. by Jer (2010-12-21 15:08:01) |

| part 1 not finished. by Jer (2010-12-21 10:15:11) |

Under Sum Divisors - 1 = Number (in Just Math) Posted on 2010-12-16 (3 Comments) |

| Solution by Jer (2010-12-17 16:26:14) |

Under Reverse Square to Prime (in Numbers) Posted on 2010-12-14 (1 Comments) |

| Ruling out possibilities by Jer (2010-12-14 17:17:43) |

Under Hail to thee, Sofia! (in Just Math) Posted on 2010-12-13 (10 Comments) |

| re(2): What does not work..FIGURES CAN'T LIE . by Jer (2010-12-14 10:39:09) |

| What does not work... by Jer (2010-12-13 17:35:22) |

Under Minimum perimeter length (in Geometry) Posted on 2010-12-10 (5 Comments) |

| re: this program finds... (spoiler) by Jer (2010-12-10 16:26:33) |

| Analytic solution by Jer (2010-12-10 16:12:22) |

Under Mother of nine (in Just Math) Posted on 2010-12-03 (5 Comments) |

| just a bit of brute force by Jer (2010-12-03 17:29:16) |

Under Dozen Divisibility Dilemma (in Just Math) Posted on 2010-12-02 (4 Comments) |

| re: Possible solution by Jer (2010-12-03 17:52:28) |

Under Divide Into Four (in Geometry) Posted on 2010-12-02 (3 Comments) |

| Full solution by Jer (2010-12-02 15:34:48) |

Under Mélodie de porc (in Cryptography) Posted on 2010-11-30 (3 Comments) |

| re: Hints? Ok a hint or two. by Jer (2010-12-05 00:22:20) |

Under Polynomial Ponder (in Just Math) Posted on 2010-11-26 (2 Comments) |

| Solution? by Jer (2010-11-26 17:27:14) |

Under Duplicate Digit Determination II (in Just Math) Posted on 2010-11-19 (3 Comments) |

| An analogous case. by Jer (2010-11-19 17:26:33) |

Under srebmuN desreveR (in Just Math) Posted on 2010-11-18 (4 Comments) |

| Analytic Solution to part 2 by Jer (2010-11-19 16:59:04) |

Under Ambiguous PIN Code (in Numbers) Posted on 2010-11-17 (8 Comments) |

| re(3): A Pin that works by Jer (2010-11-19 16:22:05) |

| re: Possible solution by Jer (2010-11-19 16:13:10) |

| A Pin that works by Jer (2010-11-18 15:55:00) |

Under Magic, but limited (in Just Math) Posted on 2010-11-12 (1 Comments) |

| Full solution by Jer (2010-11-12 16:04:01) |

Under Odd One Out (in Word Problems) Posted on 2010-11-10 (10 Comments) |

| probably what you had in mind by Jer (2010-11-10 12:42:55) |

Under Length of Angle Bisector (in Geometry) Posted on 2010-11-07 (3 Comments) |

| trig solution worked out by Jer (2010-11-08 14:57:42) |

Under Abracadabra (in Word Problems) Posted on 2010-10-29 (3 Comments) |

| making things up by Jer (2010-10-29 15:12:48) |

Under Defined Function (in Just Math) Posted on 2010-10-24 (4 Comments) |

| True story by Jer (2010-10-27 12:30:49) |

Under Big, super and prime (in Numbers) Posted on 2010-10-20 (8 Comments) |

| Solved by hand by Jer (2010-10-21 15:39:50) |

Under Delicate Divisibility (in Probability) Posted on 2010-10-19 (7 Comments) |

| re(3): ABACADABrA (Solution) by Jer (2010-10-20 01:30:59) |

| ABACADABrA (Solution) by Jer (2010-10-19 17:07:14) |

Under TriNRect (in Just Math) Posted on 2010-10-13 (3 Comments) |

| re: solution. minor correction by Jer (2010-10-14 15:15:37) |

Under Increase in number of factors. (in Numbers) Posted on 2010-10-05 (3 Comments) |

| Solution by Jer (2010-10-05 14:55:03) |

Under Cross Product Equality Settlement (in Sequences) Posted on 2010-10-04 (2 Comments) |

| Full solution by Jer (2010-10-04 15:01:41) |

Under Three forever (in Tricks) Posted on 2010-09-30 (5 Comments) |

| Solution by Jer (2010-09-30 15:49:41) |

Under Nineteen triplets (in Just Math) Posted on 2010-09-23 (10 Comments) |

| Rational number solution. by Jer (2010-09-23 17:16:04) |

Under If....Then... (in Logic) Posted on 2010-09-21 (4 Comments) |

| re: computer solution (with diagnals) by Jer (2010-09-22 14:50:49) |

Under Which multiple of 9? (in Just Math) Posted on 2010-09-17 (8 Comments) |

| Part 5 by Jer (2010-09-26 21:11:14) |

Under Foundation Piece (in Cryptography) Posted on 2010-09-16 (7 Comments) |

| Spoiler by Jer (2010-09-16 15:05:22) |

Under 129 again (in Numbers) Posted on 2010-09-15 (6 Comments) |

| solution by Jer (2010-09-15 14:54:13) |

Under Slowing by snowing (in Numbers) Posted on 2010-09-13 (6 Comments) |

| re: numerical integration by Jer (2010-09-13 14:52:02) |

Under Lamps in a row (in Geometry) Posted on 2010-09-03 (11 Comments) |

| Almost proved: two gaps by Jer (2010-09-03 15:34:40) |

Under The coat of many (in Word Problems) Posted on 2010-06-24 (4 Comments) |

| You'll never see a unicorn. by Jer (2010-06-25 12:41:06) |

Under Number = Sum (Digit)*Product (Digit) (in Numbers) Posted on 2010-06-21 (10 Comments) |

| Solution & thoughts by Jer (2010-06-21 14:09:07) |

Under Three Perps (in Geometry) Posted on 2010-06-11 (2 Comments) |

| Analytic solution by Jer (2010-06-11 16:01:23) |

Under Russian Roulette (in Probability) Posted on 2010-06-08 (12 Comments) |

| More complicated than I thought. How to do it. by Jer (2010-06-09 15:56:32) |

| Empty seats. by Jer (2010-06-08 14:38:31) |

Under Cover the Center (in Geometry) Posted on 2010-06-04 (6 Comments) |

| Trying N=4 by Jer (2010-06-04 17:14:45) |

| N=2 and N=3 by Jer (2010-06-04 16:11:15) |

Under Cubic and Consecutive Concern II (in Probability) Posted on 2010-05-31 (10 Comments) |

| False start on an analytic solution by Jer (2010-06-01 15:14:59) |

Under Make it equal (in Numbers) Posted on 2010-05-26 (7 Comments) |

| Full proof. by Jer (2010-05-27 11:32:44) |

Under Constructing Minimal Area (in Geometry) Posted on 2010-05-13 (5 Comments) |

| re: Solution by Jer (2010-05-13 15:07:11) |

Under Power of two (in Just Math) Posted on 2010-05-12 (1 Comments) |

| Proof. by Jer (2010-05-12 15:26:52) |

Under Many triplets (in Just Math) Posted on 2010-05-10 (6 Comments) |

| re: Another set by Jer (2010-05-12 16:53:19) |

| Some more infinities of solutions. by Jer (2010-05-10 15:36:11) |

Under Successive Stones Settlement (in Games) Posted on 2010-05-03 (2 Comments) |

| A bunch of random thoughts. by Jer (2010-05-05 16:20:55) |

Under 2*P + 2 = Perfect Square? (in Just Math) Posted on 2010-05-01 (5 Comments) |

| re: a computerized start but no proof and too small a sample size by Jer (2010-05-03 02:03:04) |

Under Power Pattern Poser (in Sequences) Posted on 2010-04-27 (3 Comments) |

| Answer. No time to explain. by Jer (2010-04-27 17:27:03) |

Under Choose your neighbor (in Numbers) Posted on 2010-04-23 (3 Comments) |

| Structure by Jer (2010-04-23 13:31:07) |

Under Double coded message (in Cryptography) Posted on 2010-04-21 (2 Comments) |

| Hint: by Jer (2010-04-23 11:34:40) |

Under Choose To Prime Poser (in Just Math) Posted on 2010-04-18 (4 Comments) |

| re(2): No Subject. No real hole in my proof. by Jer (2010-04-26 15:42:02) |

| No Subject by Jer (2010-04-23 16:28:43) |

Under Indi Games (in Geometry) Posted on 2010-04-13 (12 Comments) |

| My thoughts on solutions and posted solution. by Jer (2010-04-15 11:20:21) |

Under Twelve Divisor Trial (in Probability) Posted on 2010-04-09 (7 Comments) |

| re: BARBARA IS EXPECTING (tiny error) by Jer (2010-04-09 15:30:47) |

| solution by Jer (2010-04-09 15:08:16) |

Under Perfect Square To Divisibility By 56 (in Just Math) Posted on 2010-04-01 (14 Comments) |

| re: Does this explain why 7 is a factor of n? by Jer (2010-04-06 10:18:02) |

| A start by Jer (2010-04-01 15:26:23) |

Under Counting triplets (in Numbers) Posted on 2010-03-31 (7 Comments) |

| re: Solution (interpretations) by Jer (2010-03-31 14:09:23) |

Under Minimal area. (in Geometry) Posted on 2010-03-29 (11 Comments) |

| Explanation with no real proof. by Jer (2010-03-29 14:07:24) |

Under Gambler's triangulation (in Probability) Posted on 2010-03-18 (9 Comments) |

| Including degenerates by Jer (2010-03-19 14:26:56) |

| General geometric solution by Jer (2010-03-18 14:18:10) |

Under In Harmony with averages (in Numbers) Posted on 2010-03-12 (2 Comments) |

| A solution that might make sense. by Jer (2010-03-12 15:07:40) |

Under Cubic and Consecutive Concern (in Probability) Posted on 2010-03-11 (2 Comments) |

| Partial analytic solution by Jer (2010-03-11 22:52:58) |

Under Pigeons will like it (in Numbers) Posted on 2010-03-08 (2 Comments) |

| Adding zeros (full solution) by Jer (2010-03-08 16:12:52) |

Under Limiting Mean (in Calculus) Posted on 2010-03-07 (3 Comments) |

| Solution by Jer (2010-03-08 15:21:12) |

Under Squares joining quadratics (in Just Math) Posted on 2010-02-24 (5 Comments) |

| re: Four squares by analysis (spoiler) by Jer (2011-02-12 19:10:06) |

| re(2): computer exploration (there is a 4th. a hint) by Jer (2010-02-26 15:01:36) |

Under Getting Natural With Derivative And Integral (in Calculus) Posted on 2010-02-11 (4 Comments) |

| re: Time for a solution, KS? by Jer (2010-02-18 13:16:20) |

Under Lucky seven (in Numbers) Posted on 2010-02-05 (5 Comments) |

| Such a number exists. by Jer (2010-02-05 16:30:09) |

Under Infinitely Continued III (in Numbers) Posted on 2010-02-04 (7 Comments) |

| A couple of things by Jer (2010-02-06 15:20:25) |

| Is my reasoning valid? by Jer (2010-02-04 15:17:51) |

Under Drop into the Bucket (in Shapes) Posted on 2010-02-03 (9 Comments) |

| All 3 below are incorrect. No spoilers. by Jer (2010-02-03 16:31:24) |

Under Enough is enough (in Games) Posted on 2010-01-29 (4 Comments) |

| If its the second option (spoiler) by Jer (2010-01-29 15:45:34) |

| Need clarification. by Jer (2010-01-29 15:36:31) |

Under Square String Settlement (in Sequences) Posted on 2010-01-28 (8 Comments) |

| If I counted right... by Jer (2010-01-28 11:44:39) |

Under Right Triangles (in Geometry) Posted on 2010-01-22 (4 Comments) |

| re(2): Thank you Descartes. 3 solutions. by Jer (2010-01-24 02:24:13) |

| Thank you Descartes. 3 solutions. by Jer (2010-01-22 15:05:10) |

Under Sum Month and Day (in General) Posted on 2010-01-14 (5 Comments) |

| Leaping lizards! by Jer (2010-01-14 14:58:35) |

Under P^{X }+ 144 = Perfect Square (in Just Math) Posted on 2010-01-12 (9 Comments) |

| Analytic solution by Jer (2010-01-12 14:39:18) |

Under 15-Digits and Repunit Division (in Numbers) Posted on 2010-01-07 (4 Comments) |

| Analytical Solution by Jer (2010-01-09 20:16:05) |

Under Triangles with no area (in Shapes) Posted on 2009-12-30 (9 Comments) |

| re: Removal? by Jer (2010-01-01 14:15:17) |

Under Supreme Successive Shuffle (in Probability) Posted on 2009-12-15 (9 Comments) |

| re: Some thoughts (Spoiler) Finished by Jer (2009-12-18 16:37:57) |

| re: Recursive two-way formula. Fixed. by Jer (2009-12-17 10:16:29) |

| Recursive two-way formula. by Jer (2009-12-16 18:55:43) |

Under Rooting For The Limit II (in Calculus) Posted on 2009-11-26 (4 Comments) |

| re: further computer exploration by Jer (2009-11-28 14:34:29) |

Under sum of outcomes of three dice (in Probability) Posted on 2009-11-20 (4 Comments) |

| pair plus a third by Jer (2009-11-20 15:14:22) |

Under Rolling Die (in General) Posted on 2009-11-19 (6 Comments) |

| dru my solutions by Jer (2009-11-19 15:17:32) |

Under Consecutive 8-Digit Heron (in Geometry) Posted on 2009-11-15 (4 Comments) |

| OEIS by Jer (2009-11-16 15:11:19) |

Under Splitting a 2 by N Rectangle (in Shapes) Posted on 2009-11-11 (3 Comments) |

| re: Table by Jer (2009-11-12 10:07:14) |

Under Getting Powerful With Euler II (in Calculus) Posted on 2009-11-10 (4 Comments) |

| puzzling by Jer (2009-11-10 15:27:08) |

Under Two Rolling Balls (in Science) Posted on 2009-11-04 (21 Comments) |

| depends by Jer (2009-11-04 16:56:11) |

Under Gassed Up Racing (in General) Posted on 2009-11-02 (4 Comments) |

| Thinking about extensions (solved them too) by Jer (2009-11-03 15:15:28) |

Under Supreme Seventy Sum (in Just Math) Posted on 2009-10-30 (4 Comments) |

| General method by Jer (2009-10-30 15:23:27) |

Under 4x4 Grid Difference (in Probability) Posted on 2009-10-27 (2 Comments) |

| Bonus first: by Jer (2009-10-27 16:29:25) |

Under The ants go marching. (in Just Math) Posted on 2009-10-21 (7 Comments) |

| re: Anty Climax for #6 by Jer (2009-10-28 16:16:59) |

Under 2/5 ≤ m/n ≤ 3/5 (in Just Math) Posted on 2009-10-20 (7 Comments) |

| re: Eureka! (spoiler) by Jer (2009-10-22 10:42:22) |

| Stumped by Jer (2009-10-21 15:35:24) |

Under x + y * ^{3}√2 + z * ^{3}√4 = 0 (in Just Math) Posted on 2009-10-15 (14 Comments) |

| re: Non-rigorous argument by Jer (2009-10-15 14:59:19) |

Under No Monochrome Sums (in Numbers) Posted on 2009-10-14 (9 Comments) |

| re: Sloane says by Jer (2009-10-15 00:18:25) |

Under 9 points to convex pentagon (in Shapes) Posted on 2009-10-12 (4 Comments) |

| re(3): Happy Ending by Jer (2009-10-19 01:48:22) |

| re: Happy Ending by Jer (2009-10-18 01:22:37) |

Under 8 points no convex pentagon (in Shapes) Posted on 2009-10-09 (4 Comments) |

| re: possible real solution (not proven yet) -counterexample by Jer (2009-10-09 15:32:22) |

Under 5 points to convex quad (in Shapes) Posted on 2009-10-05 (4 Comments) |

| re: another proof (tiny problem) by Jer (2009-10-06 17:52:27) |

Under Chameleon Island (in Numbers) Posted on 2009-09-25 (3 Comments) |

| The key to solution by Jer (2009-09-25 15:27:02) |

Under Unit lengths from movable points to unit triangles. (in Geometry) Posted on 2009-09-14 (11 Comments) |

| You have about as much as I do. by Jer (2009-09-15 10:25:18) |

Under Even Corners and Equal Subgrids (in Numbers) Posted on 2009-08-18 (5 Comments) |

| re: computer solution by Jer (2009-08-18 14:05:40) |

Under and W (in Word Problems) Posted on 2009-07-14 (5 Comments) |

| re: Google's thoughts - Hints by Jer (2009-07-16 23:14:20) |

Under Terminating in seven sevens (in Numbers) Posted on 2009-06-26 (2 Comments) |

| re: computer solution by Jer (2009-06-26 20:32:47) |

Under 3x3 Nim (in Games) Posted on 2009-06-25 (26 Comments) |

| re: Winning Strategy (spoiler) by Jer (2009-06-25 17:02:11) |

Under Powering Up The Matrix (in Just Math) Posted on 2009-06-20 (3 Comments) |

| re: Solution by Jer (2009-06-22 13:37:20) |

Under Triangles and Squares (in Geometry) Posted on 2009-06-17 (4 Comments) |

| re: yellow/cyan proof by Jer (2009-06-17 14:23:39) |

Under Lights switched (in Logic) Posted on 2009-06-03 (5 Comments) |

| The search for order... by Jer (2009-06-04 15:08:52) |

| re(3): computer solution by Jer (2009-06-04 13:48:23) |

| re: computer solution by Jer (2009-06-04 11:51:06) |

Under 5 Cards Magic Trick (in Logic) Posted on 2009-05-29 (7 Comments) |

| Possible system by Jer (2009-05-29 14:10:41) |

| re: This is not the solution but close by Jer (2009-05-29 13:51:34) |

Under Random chord problem (in Geometry) Posted on 2009-05-11 (15 Comments) |

| re(2): solution, maybe (good question) by Jer (2009-05-12 13:47:39) |

Under Taking the 5th (in Numbers) Posted on 2009-05-03 (5 Comments) |

| This takes me back... by Jer (2009-05-03 17:24:55) |

Under Binomial Pandigital(s) (in Numbers) Posted on 2009-04-28 (3 Comments) |

| thoughts by Jer (2009-04-29 13:35:09) |

Under Factorials and Powers (in Just Math) Posted on 2009-04-22 (8 Comments) |

| Related problem by Jer (2009-04-25 01:39:08) |

Under In a Mystery.... (in Word Problems) Posted on 2009-04-16 (12 Comments) |

| Listing words by Jer (2009-04-16 13:48:14) |

Under Way to minimum and maximum (in Just Math) Posted on 2009-04-08 (4 Comments) |

| analytic solution by Jer (2009-04-08 14:23:14) |

Under Composite Total (in Numbers) Posted on 2009-03-31 (2 Comments) |

| solution by Jer (2009-03-31 10:58:13) |

Under Derivative chains. (in Calculus) Posted on 2009-03-29 (6 Comments) |

| Keep trying by Jer (2009-04-02 13:35:30) |

Under Dicey numbers (in Numbers) Posted on 2009-03-27 (6 Comments) |

| Got too big by Jer (2009-03-27 13:18:45) |

| A starting observation. by Jer (2009-03-27 12:56:37) |

Under Making integer an expression (in Just Math) Posted on 2009-03-20 (12 Comments) |

| solution by Jer (2009-03-20 13:22:09) |

Under Exponent Crossed Power (in Just Math) Posted on 2009-03-18 (10 Comments) |

| seemed like it would work by Jer (2009-03-18 13:06:25) |

Under Integer Side Lengths (in Just Math) Posted on 2009-03-05 (8 Comments) |

| re: To Jer and a Confirmation by Jer (2009-03-06 13:24:51) |

| re: Geometric solution! by Jer (2009-03-06 13:15:03) |

| Different solution by Jer (2009-03-05 14:02:01) |

Under Factorials to Squares (in Numbers) Posted on 2009-02-25 (3 Comments) |

| Integer sequence for n! +1 = p^2 (help) by Jer (2009-02-26 14:55:52) |

Under super powerful pandigitals (in Numbers) Posted on 2009-02-24 (7 Comments) |

| An uninteresting property. by Jer (2009-02-24 13:59:23) |

Under Curious Consecutive Cyphers II (in Just Math) Posted on 2009-02-23 (7 Comments) |

| Complete Analytic Solution by Jer (2009-02-24 14:23:54) |

Under Pennies, Dimes, and Quarters (in Numbers) Posted on 2009-02-17 (10 Comments) |

| On the generalization by Jer (2009-02-17 14:39:33) |

Under Non-Multiples (in Numbers) Posted on 2009-02-10 (3 Comments) |

| smallish by Jer (2009-02-10 15:16:24) |

Under Why, it's elementary my dear 74851687! (in Riddles) Posted on 2009-02-04 (10 Comments) |

| Got it. by Jer (2009-02-09 14:43:35) |

Under Square And Intersection (in Geometry) Posted on 2007-12-13 (3 Comments) |

| Analytic by Jer (2007-12-14 14:26:19) |

Under Water Cocoon - Defying Newton (in Science) Posted on 2007-12-09 (10 Comments) |

| Ideas by Jer (2007-12-10 10:47:30) |

Under Cutting a Rectangle (in Shapes) Posted on 2007-12-07 (8 Comments) |

| re(3): Solution missed some by Jer (2007-12-07 16:35:59) |

| re: Solution missed some by Jer (2007-12-07 14:02:25) |

Under Linear and quadratic (in Calculus) Posted on 2007-10-23 (9 Comments) |

| My 3 solutions. by Jer (2007-10-24 08:31:53) |

Under Laser Puzzle (in General) Posted on 2007-10-22 (9 Comments) |

| Finally got to try it... by Jer (2007-10-22 11:13:17) |

Under Mixing Meters, Yards and Months (in Numbers) Posted on 2007-10-04 (8 Comments) |

| Improvement on brute force? by Jer (2007-10-04 15:26:36) |

Under Convex Quadrilateral And Intersection (in Geometry) Posted on 2007-10-03 (8 Comments) |

| Harder than it looks by Jer (2007-10-03 10:53:09) |

Under Rationalizing Decimals (in Numbers) Posted on 2007-09-26 (8 Comments) |

| How about the numerator? by Jer (2007-09-26 11:05:27) |

Under Getting Quadratic With Two Digits (in Numbers) Posted on 2007-09-07 (2 Comments) |

| By program (spoiler) by Jer (2007-09-07 10:53:39) |

Under Take The Midpoints, Get Equilateral? (in Geometry) Posted on 2007-08-01 (4 Comments) |

| re: answer--but not solution by Jer (2007-08-01 22:59:53) |

Under 4,4,4,4.... (in Sequences) Posted on 2007-07-31 (8 Comments) |

| Assumed there is a trick by Jer (2007-08-01 17:09:28) |

Under Spies Like Us (in General) Posted on 2007-07-30 (3 Comments) |

| Some thoughts by Jer (2007-07-30 16:55:43) |

Under Numbered Cards (in Probability) Posted on 2007-07-23 (13 Comments) |

| re: Some starting thoughts by Jer (2007-07-23 20:34:51) |

Under A problem on factors (in Just Math) Posted on 2007-07-16 (2 Comments) |

| Part 1 by Jer (2007-07-16 10:57:36) |

Under Sum Three Factorials, Get Exponent (in Numbers) Posted on 2007-07-03 (8 Comments) |

| Full solution by Jer (2007-07-03 12:05:30) |

Under The Pace of the Race (in Probability) Posted on 2007-06-19 (4 Comments) |

| Part 1 for more players by Jer (2007-06-22 19:52:03) |

| Part 1 for 1 player by Jer (2007-06-22 19:41:05) |

Under From Minus One to Plus One (in Numbers) Posted on 2007-06-13 (6 Comments) |

| general solution for even by Jer (2007-06-14 14:22:27) |

| re: computer solution by Jer (2007-06-14 09:05:22) |

Under Equal Maxes (in Calculus) Posted on 2007-06-12 (6 Comments) |

| Too simple? by Jer (2007-06-12 11:46:03) |

Under Triple Convergence (in Algorithms) Posted on 2007-06-08 (1 Comments) |

| Cosine. No proofs. by Jer (2007-06-11 12:46:43) |

Under Square in a Sector (in Geometry) Posted on 2007-06-06 (5 Comments) |

| Solution by Jer (2007-06-07 12:06:23) |

Under Face up Poker (in Games) Posted on 2007-06-04 (8 Comments) |

| Can you do better than tie? by Jer (2007-06-04 12:31:14) |

Under Subtle Summed Squares (in Numbers) Posted on 2007-05-18 (6 Comments) |

| re: Not so fast! by Jer (2007-05-21 12:26:28) |

| Solution by Jer (2007-05-18 13:03:28) |

Under Falling through the floor (in Probability) Posted on 2007-05-18 (4 Comments) |

| re: solutions for first three by Jer (2007-05-18 12:54:48) |

Under Consecutive Integer Series (in Numbers) Posted on 2007-05-14 (12 Comments) |

| Full expicit formula by Jer (2007-05-15 12:07:13) |

| Better but worse by Jer (2007-05-14 15:36:15) |

Under Magic trick (in General) Posted on 2007-05-11 (51 Comments) |

| A new approach by Jer (2007-05-14 12:59:05) |

| A start by Jer (2007-05-11 13:20:12) |

Under TetraCubes (in Shapes) Posted on 2007-05-08 (2 Comments) |

| Found one by Jer (2007-05-09 12:25:58) |

Under Sum Squared Divisors, Get Number (in Numbers) Posted on 2007-05-03 (6 Comments) |

| One number that works by Jer (2007-05-03 13:19:49) |

Under A Parallelogram Puzzle (in Geometry) Posted on 2007-05-01 (5 Comments) |

| Harder solution by Jer (2007-05-01 12:13:28) |

Under Well Balanced Letter: E (in Shapes) Posted on 2007-04-30 (4 Comments) |

| re: If ... by Jer (2007-04-30 11:59:04) |

Under Subtract Products, Get Identity? (in Just Math) Posted on 2007-04-11 (3 Comments) |

| Solution and a variant by Jer (2007-04-11 13:36:30) |

Under Fast clock, slow clock (in Riddles) Posted on 2007-04-11 (16 Comments) |

| Even more far fetched by Jer (2007-04-11 12:16:42) |

Under Sum the squares, get factorial (in Numbers) Posted on 2007-04-03 (2 Comments) |

| Some insights by Jer (2007-04-04 12:10:54) |

Under Paint it black (in Probability) Posted on 2007-04-02 (9 Comments) |

| Not likely by Jer (2007-04-02 12:24:25) |

Under Chain Reaction (in Logic) Posted on 2007-04-01 (4 Comments) |

| re(2): Solution by Jer (2007-04-02 11:59:59) |

Under A 2547 Puzzle (in Numbers) Posted on 2007-03-29 (4 Comments) |

| My start by Jer (2007-03-30 11:30:41) |

Under More Harmonic Integers (2) (in Numbers) Posted on 2007-03-28 (6 Comments) |

| Partly solved by Jer (2007-03-29 11:24:46) |

Under Differences Do Dozen? (in Numbers) Posted on 2007-03-28 (2 Comments) |

| Dozen by Jer (2007-03-28 07:33:45) |

Under Basic Statistics (in Numbers) Posted on 2007-03-26 (3 Comments) |

| Method by Jer (2007-03-26 11:36:35) |

Under Incongruency (in Geometry) Posted on 2007-03-23 (4 Comments) |

| 6 triangles by Jer (2007-03-26 11:28:18) |

Under At Fault Coverage (in Shapes) Posted on 2007-03-22 (9 Comments) |

| re: A counting solution by Jer (2007-03-23 10:46:44) |

Under Basic Factoring (in Just Math) Posted on 2007-03-21 (4 Comments) |

| How's this? (Probable spoiler) by Jer (2007-03-21 11:07:37) |

Under Powersdale To Quicksville (in General) Posted on 2007-03-20 (4 Comments) |

| slightly different solution by Jer (2007-03-21 11:58:01) |

Under Integer coefficients (in Just Math) Posted on 2007-03-13 (3 Comments) |

| Outline of solution by Jer (2007-03-13 09:34:49) |

Under Fair Pairs (in Probability) Posted on 2007-03-05 (5 Comments) |

| Triangles (solution) by Jer (2007-03-05 12:35:26) |

Under Cutting Corners (in Geometry) Posted on 2007-02-27 (20 Comments) |

| re: Corner Cutting Function by Jer (2007-03-01 13:34:11) |

| Links and stuff by Jer (2007-02-28 12:40:52) |

| re: my observations by Jer (2007-02-28 08:32:57) |

Under Special indices (in Just Math) Posted on 2007-02-26 (3 Comments) |

| My solution by Jer (2007-02-26 11:54:34) |

Under Tricky Troublesome Trisection (in Shapes) Posted on 2007-02-19 (9 Comments) |

| 3 Origami Ways by Jer (2007-02-19 12:15:52) |

Under Painted Sphere (in Geometry) Posted on 2007-02-13 (9 Comments) |

| Simplify by Jer (2007-02-13 15:41:03) |

Under Connecting the Points (in General) Posted on 2007-02-04 (8 Comments) |

| Picture of Optimized solution by Jer (2007-02-05 12:12:58) |

| Optimized by Jer (2007-02-05 11:56:03) |

Under Internal Triangle Problem (in Geometry) Posted on 2007-02-02 (4 Comments) |

| Non-vector solution by Jer (2007-02-02 12:40:39) |

Under Let's Roll (in Science) Posted on 2007-01-26 (4 Comments) |

| On a roll by Jer (2007-01-29 08:33:25) |

Under Difficulties with hotel rooms (in General) Posted on 2007-01-25 (20 Comments) |

| One of infinitely many ways by Jer (2007-01-25 12:58:46) |

Under Alien Messages (in Science) Posted on 2007-01-23 (4 Comments) |

| re: from general knowledge (spoiler) by Jer (2007-01-24 11:51:48) |

Under Allen's Ambivalent Approximation (in Probability) Posted on 2007-01-11 (5 Comments) |

| He's approximately correct - sort of by Jer (2007-01-11 12:08:13) |

Under Addition sequence (in Sequences) Posted on 2007-01-09 (5 Comments) |

| next few terms. (No spoiler) by Jer (2007-01-09 13:02:12) |

Under A 2007 Problem (in Just Math) Posted on 2007-01-04 (2 Comments) |

| Only positive numbers. Don't ask me to actually find them. by Jer (2007-01-05 13:33:38) |

Under An Atypical Product Problem (in Just Math) Posted on 2007-01-03 (5 Comments) |

| Solutions by Jer (2007-01-03 11:32:30) |

Under Six hundred coins (in Probability) Posted on 2006-12-22 (12 Comments) |

| re(2): I might think you cheated. by Jer (2006-12-22 15:03:08) |

| I might think you cheated. by Jer (2006-12-22 11:42:40) |

Under No Cigar (in Numbers) Posted on 2006-12-19 (10 Comments) |

| OOO wins so far by Jer (2006-12-19 12:31:05) |

| re: Closer still? Even better thanks to OOO by Jer (2006-12-19 11:51:16) |

| re: Closer still? Even better thanks to OOO by Jer (2006-12-19 11:51:10) |

| Closer still? by Jer (2006-12-19 11:43:33) |

Under The Game (in Paradoxes) Posted on 2006-12-14 (14 Comments) |

| Possible way to win by Jer (2006-12-14 11:07:06) |

Under Row on Row (in General) Posted on 2006-12-11 (10 Comments) |

| No ambiguity solution for part 1 by Jer (2006-12-12 10:41:22) |

Under Sum crazy dice (in Probability) Posted on 2006-11-30 (8 Comments) |

| Part c) clarified. by Jer (2006-12-01 10:56:36) |

Under Horoscope Hijinks I (in General) Posted on 2006-11-28 (7 Comments) |

| Smaller Zodiacs by Jer (2006-11-28 15:11:31) |

Under Angle Trisection (in Geometry) Posted on 2006-11-09 (6 Comments) |

| re: 'Dis Proof. The mistake by Jer (2006-11-10 10:46:20) |

Under Geometric Integers (in Just Math) Posted on 2006-11-09 (6 Comments) |

| re: doing something wrong? by Jer (2006-11-10 14:31:11) |

| re: doing something wrong? by Jer (2006-11-10 14:31:11) |

| doing something wrong? by Jer (2006-11-09 11:04:09) |

Under 4-gon Probability (in Probability) Posted on 2006-11-03 (2 Comments) |

| Part 1 is simpler. by Jer (2006-11-03 11:37:43) |

Under Shrink needed (in Algorithms) Posted on 2006-10-18 (26 Comments) |

| re(2): Ideas by Jer (2006-10-19 11:26:18) |

| Ideas by Jer (2006-10-18 12:04:55) |

Under Radioactive Coins (in Weights and Scales) Posted on 2006-10-17 (18 Comments) |

| Not opimum: 48 by Jer (2006-10-19 11:44:36) |

Under Three Periodical Questions (in Numbers) Posted on 2006-10-16 (4 Comments) |

| What is 'pure'? (and part 1 & 2)) by Jer (2006-10-16 11:09:06) |

Under The digits and square numbers (in Numbers) Posted on 2006-10-12 (3 Comments) |

| re: computer solution (spoiler) - Observation by Jer (2006-10-13 07:30:37) |

Under Two Mirrors (in Geometry) Posted on 2006-10-08 (4 Comments) |

| To start by Jer (2006-10-10 11:36:40) |

Under Those infinite small steps (in Just Math) Posted on 2006-10-03 (8 Comments) |

| re: One proof out of many by Jer (2006-10-03 11:00:20) |

Under A rational number problem (in Numbers) Posted on 2006-10-02 (12 Comments) |

| re(2): Got it by Jer (2006-10-03 07:32:48) |

| Got it by Jer (2006-10-02 14:35:17) |

Under Corker (in Science) Posted on 2006-10-02 (14 Comments) |

| re(2): Cheerios - bewilderment by Jer (2006-10-03 11:10:48) |

| I knew I had seen it recently by Jer (2006-10-02 11:26:30) |

| Cheerios by Jer (2006-10-02 10:50:49) |

Under Margana (in Word Problems) Posted on 2006-09-27 (7 Comments) |

| But which is the best? by Jer (2006-09-27 11:47:08) |

Under Repeating decimals (in Numbers) Posted on 2006-09-25 (11 Comments) |

| re: General solution by Jer (2006-09-26 11:17:03) |

| re(2): computer exploration by Jer (2006-09-25 11:46:38) |

Under Can you match them up? (in Just Math) Posted on 2006-09-21 (6 Comments) |

| re: Solutions 2 to 4 -I'm not sure by Jer (2006-09-21 20:28:18) |

Under compoundwordplay (in Word Problems) Posted on 2006-09-20 (5 Comments) |

| re: a solution (not bad) by Jer (2006-09-21 11:22:16) |

Under Paint Job Pro (in Shapes) Posted on 2006-09-19 (2 Comments) |

| No Subject by Jer (2006-09-19 12:38:19) |

Under Cutting planes with polygons (in Shapes) Posted on 2006-09-06 (16 Comments) |

| re: Who dares: Not I by Jer (2006-09-11 11:20:23) |

| I agree. Full explanation. by Jer (2006-09-07 11:46:34) |

Under These are no fractions, are they? (in Numbers) Posted on 2006-09-05 (15 Comments) |

| My thought by Jer (2006-09-06 07:27:50) |

Under The gardener's woe is continuous (in Just Math) Posted on 2006-08-30 (5 Comments) |

| re: Converge/Diverge by Jer (2006-08-31 14:33:05) |

Under Summing or Multiplying (in Numbers) Posted on 2006-08-21 (20 Comments) |

| Cursory examination by Jer (2006-08-21 10:03:34) |

Under So how small is it then? (in Numbers) Posted on 2006-08-09 (15 Comments) |

| re(2): This is a notation trick by Jer (2006-09-26 11:27:45) |

| re: different solution by Jer (2006-08-11 09:41:18) |

Under Vital Vegetal Vibes (in General) Posted on 2006-08-07 (11 Comments) |

| Yuck & Yum by Jer (2006-08-07 09:34:30) |

Under Various Valleys, More Mountains (in Shapes) Posted on 2006-07-26 (7 Comments) |

| Some possibly enlightening sites by Jer (2006-07-27 14:51:04) |

Under 10 Ultimate cribbage hands (in Games) Posted on 2006-07-18 (4 Comments) |

| re: Did I just peg out? by Jer (2006-07-19 09:20:56) |

Under Rising water levels (in Shapes) Posted on 2006-06-26 (26 Comments) |

| re: Worth a vote - calculusless by Jer (2006-06-28 09:53:43) |

Under Gardener's Woe (in Just Math) Posted on 2006-06-24 (26 Comments) |

| re(3): Nicely done -- now through 7 seedlings by Jer (2006-06-26 18:58:23) |

| Nicely done by Jer (2006-06-26 09:50:11) |

| re: My solution for 5 seeds by Jer (2006-06-25 11:26:50) |

| Clarifications and stuff by Jer (2006-06-24 17:01:57) |

Under A case of misguided sheep. (in Riddles) Posted on 2006-06-23 (22 Comments) |

| re: first real six string by Jer (2006-06-24 17:19:53) |

Under Three Intercepts (in Just Math) Posted on 2006-06-19 (7 Comments) |

| re: The Old Kitchen Sink by Jer (2006-06-20 14:50:08) |

Under The Ultimate Cribbage Hand (in Games) Posted on 2006-06-07 (21 Comments) |

| re: Why is J5555 only 29 pts? by Jer (2006-06-07 17:55:16) |

Under Trading Places 2D (in Algorithms) Posted on 2006-06-07 (3 Comments) |

| Solution by Jer (2006-06-07 11:57:32) |

Under Pegless Painting Plummets! (2) (in General) Posted on 2006-06-02 (6 Comments) |

| This works by Jer (2006-06-05 13:16:59) |

Under Math Rebuses (Rebi?) (in Word Problems) Posted on 2006-06-01 (8 Comments) |

| The one that isn't right by Jer (2006-06-01 12:49:52) |

Under Multicolored Coins (in Probability) Posted on 2006-05-24 (10 Comments) |

| Solution, no expl. by Jer (2006-05-24 09:09:39) |

Under Game Over! (in Probability) Posted on 2006-05-22 (14 Comments) |

| re: solution for question 2 by Jer (2006-05-22 13:15:44) |

Under Least L.C.M. (in Just Math) Posted on 2006-05-19 (5 Comments) |

| Second try (probably the solution) by Jer (2006-05-19 12:46:36) |

| First try by Jer (2006-05-19 12:40:24) |

Under Cubes in a tin (in Shapes) Posted on 2006-05-15 (23 Comments) |

| re: This should be the question by Jer (2006-05-16 12:30:02) |

Under A 'well known' Sequence (in Sequences) Posted on 2006-05-11 (6 Comments) |

| re: A wild guess by Jer (2006-05-25 12:30:45) |

| Hint by Jer (2006-05-18 12:16:35) |

Under Garden Path (in Geometry) Posted on 2006-05-10 (11 Comments) |

| re: Solution- I guess by Jer (2006-05-10 13:25:05) |

Under Squares in a cross (in General) Posted on 2006-05-10 (5 Comments) |

| Minimum by Jer (2006-05-11 12:24:07) |

Under Repeated Root Research (in Calculus) Posted on 2006-05-08 (6 Comments) |

| Complex not possible by Jer (2006-05-09 13:14:57) |

Under Gravity experiment (in General) Posted on 2006-05-04 (29 Comments) |

| Possibly right solution, partial expl. by Jer (2006-05-04 14:09:26) |

Under Square = half itself? (in Shapes) Posted on 2006-05-04 (19 Comments) |

| re: Another alternative by Jer (2006-05-04 12:32:39) |

| re: alternatives by Jer (2006-05-04 12:31:52) |

Under View from Perplexus Tower (in General) Posted on 2006-04-27 (9 Comments) |

| The rest of them. by Jer (2006-04-27 13:06:05) |

| First part, alternate expl. by Jer (2006-04-27 12:55:14) |

Under 3 in a row = bad (in General) Posted on 2006-04-26 (13 Comments) |

| re: Minimum and Maximum by Jer (2006-04-27 13:23:57) |

Under They do it with mirrors (in Science) Posted on 2006-04-26 (8 Comments) |

| re: Not without help by Jer (2006-04-26 13:19:19) |

Under Three from Nine (in Probability) Posted on 2006-04-25 (12 Comments) |

| re(3): Partial Solution by Jer (2006-04-25 13:40:54) |

| re: Partial Solution by Jer (2006-04-25 13:08:44) |

| Probable solution by Jer (2006-04-25 13:04:13) |

Under A Composite Determination Problem (in Just Math) Posted on 2006-04-23 (14 Comments) |

| does this make sense? by Jer (2006-04-23 13:43:24) |

| re: A first stab at the solution by Jer (2006-04-23 13:21:48) |

Under Padre (in Famous Riddles) Posted on 2006-04-19 (27 Comments) |

| re: Solution (with computer verification) by Jer (2006-04-19 21:17:02) |

Under Circular Jogging Track Problem 2 (in General) Posted on 2006-04-13 (6 Comments) |

| re(2): solution by Jer (2006-04-14 07:41:47) |

| Solution, no explanation by Jer (2006-04-13 14:10:13) |

Under Circular Jogging Track Problem (in General) Posted on 2006-04-12 (9 Comments) |

| Near miss on day two by Jer (2006-04-13 13:38:00) |

Under Two fours (or fewer?) (in Numbers) Posted on 2006-04-07 (15 Comments) |

| Unreliable use of reliable source by Jer (2006-04-11 12:44:22) |

| re: Second Part by Jer (2006-04-11 12:26:36) |

| re: Reliable source by Jer (2006-04-10 15:59:32) |

| Reliable source by Jer (2006-04-10 15:50:32) |

Under It's in the Cards (in General) Posted on 2006-04-06 (6 Comments) |

| What kind of game? by Jer (2006-04-06 11:38:53) |

Under Wreck out! (in Algorithms) Posted on 2006-04-03 (6 Comments) |

| I think I got it. by Jer (2006-04-03 13:24:26) |

Under Integer Solutions (in Numbers) Posted on 2006-03-30 (16 Comments) |

| I think I got it. by Jer (2006-03-30 14:25:56) |

Under Rotating slopes (in Just Math) Posted on 2006-03-21 (5 Comments) |

| re: Solution - how do you use it? by Jer (2006-03-22 14:25:41) |

Under Pythagorean Chain (in Shapes) Posted on 2006-03-20 (18 Comments) |

| re(2): Is 10000 too big? Is 1000 too big? by Jer (2006-03-21 13:16:29) |

| Is 10000 too big? by Jer (2006-03-21 07:42:36) |

Under A Quintic Problem (in Just Math) Posted on 2006-03-15 (7 Comments) |

| re: Small steps (another step) by Jer (2006-03-16 12:53:05) |

Under Discover U.S. (in Cryptography) Posted on 2006-03-14 (11 Comments) |

| re(3): Solution (again) by Jer (2006-03-14 14:41:44) |

Under and (in Word Problems) Posted on 2006-03-13 (26 Comments) |

| re(2): The coordinating conjunctions by Jer (2006-03-13 13:53:35) |

| re(2): The coordinating conjunctions by Jer (2006-03-13 13:52:27) |

| re(2): The coordinating conjunctions by Jer (2006-03-13 13:52:25) |

| re(2): The coordinating conjunctions by Jer (2006-03-13 13:52:20) |

| re(2): The coordinating conjunctions by Jer (2006-03-13 13:51:23) |

Under Cross cut (in Shapes) Posted on 2006-03-06 (18 Comments) |

| re(2): 4 pieces minus epsilon by Jer (2006-03-08 12:33:47) |

| 4 pieces minus epsilon by Jer (2006-03-07 15:32:14) |

| 8 pc. similar solution by Jer (2006-03-06 15:08:33) |

Under Common Link (in Word Problems) Posted on 2006-03-03 (7 Comments) |

| my guess - possibly close by Jer (2006-03-03 12:41:54) |

Under Factorial sequence (in Just Math) Posted on 2006-03-02 (2 Comments) |

| Proof/Explanation by Jer (2006-03-02 12:48:08) |

Under The Gardener and the Cook (in Tricks) Posted on 2006-03-01 (29 Comments) |

| re(2): April 1, 1900 - Sunday by Jer (2006-03-02 13:11:02) |

Under Splitting shapes (in Shapes) Posted on 2006-02-16 (9 Comments) |

| re(3): All but 5 by Jer (2006-03-16 13:12:10) |

| 4 region solutions by Jer (2006-02-17 12:49:34) |

| going further by Jer (2006-02-16 13:33:42) |

| Pictures of solutions by Jer (2006-02-16 13:19:09) |

Under Expect the unexpected (in Paradoxes) Posted on 2006-02-15 (32 Comments) |

| well... by Jer (2006-02-15 12:34:43) |

Under Bouncy Bouncy part 2 (in Calculus) Posted on 2006-02-10 (14 Comments) |

| re: Some Thoughts by Jer (2006-02-14 12:32:50) |

| and other thing... by Jer (2006-02-13 12:39:34) |

| Incidentally by Jer (2006-02-13 12:34:17) |

Under Bouncy Bouncy Part 1 (in Geometry) Posted on 2006-02-08 (10 Comments) |

| your solutions are all to complicated by Jer (2006-02-09 07:36:55) |

Under Scrabble® Scramble (in Games) Posted on 2006-02-03 (7 Comments) |

| re: Any better set of letters? (suggestion) by Jer (2006-02-03 14:16:06) |

Under Sequence o' Fun (in Sequences) Posted on 2006-01-25 (4 Comments) |

| Smaller than I thought... (spoiler) by Jer (2006-01-25 14:55:47) |

Under A Capital Idea! (in Sequences) Posted on 2006-01-24 (12 Comments) |

| Is that really it? by Jer (2006-01-24 14:30:55) |

Under Odometer Sum of the Digits (in Numbers) Posted on 2006-01-19 (11 Comments) |

| Best I could get playing with it by Jer (2006-01-19 12:39:42) |

Under A cute little angle to find (in Geometry) Posted on 2006-01-18 (7 Comments) |

| Source of this problem by Jer (2006-01-19 07:39:25) |

Under Circle's Limit (in Calculus) Posted on 2006-01-13 (4 Comments) |

| I think I proved it without calculus. by Jer (2006-01-13 10:29:30) |

Under Something in common (in General) Posted on 2006-01-11 (5 Comments) |

| If I got it it doesn't make much sense... by Jer (2006-01-12 14:38:47) |

| re: Hints by Jer (2006-01-12 14:30:28) |

Under Stupid number trick III (in Numbers) Posted on 2006-01-11 (11 Comments) |

| re(2): Fractals & a hard extension by Jer (2006-01-12 07:41:19) |

| Fractals & a hard extension by Jer (2006-01-11 14:26:40) |

Under Two squares (in Shapes) Posted on 2006-01-05 (7 Comments) |

| re: Solution by Jer (2006-01-05 14:35:58) |

Under Two spheres in a tank (in Science) Posted on 2006-01-05 (11 Comments) |

| about sugar by Jer (2006-01-10 12:46:03) |

Under What number? (in Tricks) Posted on 2005-12-16 (6 Comments) |

| My thought by Jer (2005-12-19 09:28:17) |

Under Only briefly continuous (in Calculus) Posted on 2005-12-15 (11 Comments) |

| Non-piecewise by Jer (2005-12-15 14:34:42) |

Under Equal Angles (in Geometry) Posted on 2005-12-14 (4 Comments) |

| re: Is there an easier way? ??? by Jer (2005-12-14 14:28:39) |

Under Boiling Impossibilities (in Science) Posted on 2005-12-06 (41 Comments) |

| re(4): The Answer by Jer (2005-12-15 14:45:30) |

| so far no good by Jer (2005-12-06 10:42:47) |

Under The prisoners and the beans (in Logic) Posted on 2005-11-27 (38 Comments) |

| re: by Jer (2005-12-07 09:41:45) |

| re: Prisoner's Dilemma Deluxe by Jer (2005-11-30 09:47:08) |

Under Box bounce (in Geometry) Posted on 2005-11-17 (26 Comments) |

| re(6): weighing in (my error) by Jer (2005-11-26 13:22:32) |

| re(4): weighing in on the gravity solution (full solution?) by Jer (2005-11-22 07:48:04) |

| re(2): weighing in on the gravity solution (full solution?) by Jer (2005-11-21 10:07:18) |

| weighing in on the gravity solution (full solution?) by Jer (2005-11-18 09:53:51) |

Under Connect the planets (in General) Posted on 2005-11-16 (10 Comments) |

| Mt drawing by Jer (2005-11-16 12:32:01) |

Under A new kind of pattern? (in Sequences) Posted on 2005-11-08 (7 Comments) |

| re: Next 3 by Jer (2005-11-08 15:28:33) |

Under The Dice Game (in Games) Posted on 2005-11-04 (12 Comments) |

| Solution given assumptions. by Jer (2005-11-04 07:47:24) |

Under Set of Spheres (in Geometry) Posted on 2005-11-03 (7 Comments) |

| re(2): mathworld link by Jer (2005-11-07 07:39:00) |

| mathworld link by Jer (2005-11-04 12:47:40) |

Under Covering A Circle (in Shapes) Posted on 2005-10-21 (11 Comments) |

| re: overlap solution by Jer (2005-10-21 13:08:16) |

| overlap solution by Jer (2005-10-21 13:05:00) |

| non-overlap solution by Jer (2005-10-21 12:59:52) |

| overlap? by Jer (2005-10-21 12:25:25) |

Under Isosceles Right Triangles (in Geometry) Posted on 2005-10-19 (10 Comments) |

| Analytic solution by Jer (2005-10-19 13:36:12) |

Under Scratch a Home Run! (in Probability) Posted on 2005-10-18 (8 Comments) |

| My solution by Jer (2005-10-18 10:44:23) |

Under Wrapping an Equilateral Triangle (in Geometry) Posted on 2005-10-10 (15 Comments) |

| estimate by Jer (2005-10-11 19:15:06) |

Under Trigrams (in Word Problems) Posted on 2005-10-07 (36 Comments) |

| re: BWA by Jer (2005-10-07 18:56:21) |

Under Twelve what?! (in General) Posted on 2005-10-04 (22 Comments) |

| i) by Jer (2005-10-05 13:54:42) |

Under Make a hole (in General) Posted on 2005-10-02 (6 Comments) |

| Solution and analysis by Jer (2005-10-03 14:10:14) |

Under Crossing the board (in General) Posted on 2005-09-30 (10 Comments) |

| Spoiler by Jer (2005-09-30 19:27:34) |

Under Buddy System (in Just Math) Posted on 2005-09-22 (8 Comments) |

| re: need a better formula (!!) by Jer (2005-09-22 19:17:57) |

Under Shorten and halve (in Word Problems) Posted on 2005-09-21 (32 Comments) |

| edible math solution by Jer (2005-09-21 18:48:23) |

Under Recursive Definition (in Numbers) Posted on 2005-09-09 (7 Comments) |

| But can I prove it? by Jer (2005-09-09 16:52:56) |

Under Sorta pythagoric... (in Numbers) Posted on 2005-09-01 (16 Comments) |

| re(2): Not other small ones by Jer (2005-09-02 13:59:51) |

| re(2): chipping away at the possibilities by Jer (2005-09-02 13:57:00) |

| Not other small ones by Jer (2005-09-01 19:15:28) |

Under Are we odd for liking this, too? (in Cryptography) Posted on 2005-08-30 (18 Comments) |