Under Erased to a multiple of 7 (in Numbers) Posted on 20210421 (3 Comments) 
 computer solution by Charlie (20210421 10:39:46) 
Under quadratic ^ quadratic (in General) Posted on 20210406 (3 Comments) 
 proposed solution by Charlie (20210406 10:59:00) 
Under Knight tour in an infinite board (in Just Math) Posted on 20210401 (2 Comments) 
 computer exploration and solution by Charlie (20210401 12:32:23) 
Under Don't walk! (in General) Posted on 20210324 (8 Comments) 
 just a comment by Charlie (20210324 09:59:42) 
Under With or without (in Numbers) Posted on 20210322 (5 Comments) 
 to be more exact by Charlie (20210322 10:22:51) 
Under Induced divisibility (in Just Math) Posted on 20210318 (7 Comments) 
 a pattern by Charlie (20210318 12:41:55) 
 re: Solution (i think) by Charlie (20210318 11:30:59) 
Under The fibbons (in Numbers) Posted on 20210316 (4 Comments) 
 computer solution by Charlie (20210316 10:58:20) 
Under A thin triangle (in Shapes) Posted on 20210311 (2 Comments) 
 computer solution by Charlie (20210311 10:00:29) 
Under Beat The Book (in Probability) Posted on 20210310 (9 Comments) 
 re: Almost Guaranteed profit? by Charlie (20210310 18:33:30) 
 computer calculations by Charlie (20210310 12:39:51) 
Under Numeric card game (in Just Math) Posted on 20210304 (6 Comments) 
 solution by Charlie (20210304 17:21:15) 
Under Reciprocal Equation #6 (in Just Math) Posted on 20210228 (3 Comments) 
 re: computer solution by Charlie (20210228 10:07:32) 
 computer solution by Charlie (20210228 09:41:41) 
Under The class of ‘55’ (in Numbers) Posted on 20210227 (4 Comments) 
 computer solution by Charlie (20210227 15:55:35) 
Under Circular Reasoning (in Probability) Posted on 20210223 (3 Comments) 
 re: A quibble by Charlie (20210223 21:10:29) 
 solution by Charlie (20210223 09:45:48) 
Under Differences of the fraction (in Just Math) Posted on 20210220 (6 Comments) 
 The current hypothesis by Charlie (20210221 18:13:22) 
 re: A boy named Alice by Charlie (20210221 14:07:43) 
 re: Just some guesses by Charlie (20210221 14:06:13) 
 re: Just some guesses (showing the crunched numbers) by Charlie (20210220 18:20:27) 
Under Trapezium in polygon (in Numbers) Posted on 20210218 (3 Comments) 
 computer exploration and solution (spoiler) by Charlie (20210218 10:54:02) 
Under Integer sides of cuboid (in Numbers) Posted on 20210217 (6 Comments) 
 computer solution by Charlie (20210217 10:05:26) 
Under A Rebus (in Word Problems) Posted on 20210215 (1 Comments) 
 Hint by Charlie (20210218 18:59:18) 
Under Less than 100 (in Numbers) Posted on 20210214 (3 Comments) 
 computer solution by Charlie (20210214 08:59:24) 
Under Squares concatenated to square (in Numbers) Posted on 20210213 (2 Comments) 
 computer solutions by Charlie (20210213 14:05:42) 
Under Solve in naturals (in Numbers) Posted on 20210212 (3 Comments) 
 limited search by Charlie (20210212 10:28:19) 
Under As close as possible (in Numbers) Posted on 20210211 (3 Comments) 
 solutions by Charlie (20210211 08:29:18) 
Under As time goes by (in Sequences) Posted on 20210209 (5 Comments) 
 re(2): Error/. Please correct before solving! by Charlie (20210210 13:05:02) 
Under Mission 55 (in Numbers) Posted on 20210208 (6 Comments) 
 even pos even pos sorted by positions by Charlie (20210208 11:59:26) 
 re: Harder solutions, full answer by Charlie (20210208 11:48:47) 
 computer solution for the full list by Charlie (20210208 10:17:20) 
Under Powered to perfect (in Numbers) Posted on 20210207 (4 Comments) 
 making it more probable by Charlie (20210207 12:02:23) 
Under Isosceles split (in Geometry) Posted on 20210201 (1 Comments) 
 solution by Charlie (20210201 13:01:34) 
Under Entries of a matrix (in Just Math) Posted on 20210129 (5 Comments) 
 Truly computer solution (spoiler) by Charlie (20210129 18:04:44) 
 re: Trivial solution for n=2 by Charlie (20210129 18:02:24) 
Under Three circles on sphere (in Just Math) Posted on 20210127 (2 Comments) 
 an observation by Charlie (20210128 06:55:14) 
Under Never consecutive (in Probability) Posted on 20210126 (7 Comments) 
 reduced fractions by Charlie (20210128 16:18:58) 
 Neatening the table by Charlie (20210127 11:06:16) 
 numerators and denominators separately by Charlie (20210126 13:16:09) 
 by algorithm by Charlie (20210126 11:54:00) 
 simulations for comparison by Charlie (20210126 10:19:46) 
Under 33rd Powers (in Numbers) Posted on 20210125 (5 Comments) 
 simpler solution (Dzero) by Charlie (20210125 10:22:03) 
Under Sort them out (in Word Problems) Posted on 20210123 (4 Comments) 
 Coincidence or not? by Charlie (20210123 08:22:26) 
Under Sweet little sixteen (in Just Math) Posted on 20210118 (1 Comments) 
 No proof but... by Charlie (20210118 10:24:57) 
Under 3 to 6 letters (in Word Problems) Posted on 20210116 (9 Comments) 
 re: 6letter words via program; smaller from head by Charlie (20210117 13:40:24) 
 re: 6letter words via program; smaller from head by Charlie (20210117 13:09:02) 
 6letter words via program; smaller from head by Charlie (20210117 12:08:48) 
Under Solitaire: Probability Of No First Move (in Probability) Posted on 20210112 (3 Comments) 
 simulations by Charlie (20210112 10:51:48) 
Under Go one, two, three (in Numbers) Posted on 20210109 (6 Comments) 
 re: computer exploration (spoilers)  just noticed by Charlie (20210109 13:07:47) 
 computer exploration (spoilers) by Charlie (20210109 11:20:47) 
Under 1 2 4 8 (in General) Posted on 20210108 (2 Comments) 
 computeraided solution by Charlie (20210108 10:41:37) 
Under Go do modulus (in Numbers) Posted on 20210102 (4 Comments) 
 computer exploration by Charlie (20210102 15:33:11) 
Under Not The Weakest Link (in Probability) Posted on 20201228 (3 Comments) 
 The "official" solution is available for comment by Charlie (20201231 07:36:41) 
Under Five numbers and Six sums (in Numbers) Posted on 20201220 (5 Comments) 
 re: Another possibility by Charlie (20201223 10:55:41) 
 MATLAB solution by Charlie (20201220 11:22:22) 
Under Conditional pairs (in Just Math) Posted on 20201219 (5 Comments) 
 program to find a solution by Charlie (20201219 13:12:05) 
Under Box and cube rooted (in Numbers) Posted on 20201214 (6 Comments) 
 re: Solution by Charlie (20201214 13:39:20) 
 re: Solution  my found value by Charlie (20201214 12:04:51) 
Under 3 and 3 and... (in Numbers) Posted on 20201213 (2 Comments) 
 computer solution  hope there are no bugs by Charlie (20201213 13:42:11) 
Under Sin sum (in Just Math) Posted on 20201211 (4 Comments) 
 Max and Min biased, but constant difference between by Charlie (20201211 10:40:21) 
Under Complete number (in Numbers) Posted on 20201209 (3 Comments) 
 computer solution by Charlie (20201209 12:35:15) 
Under Equation in integers (in Numbers) Posted on 20201206 (4 Comments) 
 computer exploration by Charlie (20201206 15:37:26) 
Under Shortest way to a million (in Numbers) Posted on 20201203 (15 Comments) 
 re: A start by Charlie (20201203 10:38:07) 
Under Missing side of hexagon (in Geometry) Posted on 20201202 (2 Comments) 
 solution by Charlie (20201202 14:33:00) 
Under Concatenation equals Sum of Squares (in Numbers) Posted on 20201201 (5 Comments) 
 re(3): soln by Charlie (20201201 14:52:17) 
 re: soln by Charlie (20201201 12:48:00) 
Under Permuted sums (in Just Math) Posted on 20201130 (6 Comments) 
 solving for the original numbers with MATLAB by Charlie (20201130 10:28:10) 
Under Weird shuffling (in Just Math) Posted on 20201129 (8 Comments) 
 re(4): computer verification  simulation by Charlie (20201130 20:08:28) 
 re(3): computer verification  simulation by Charlie (20201129 20:57:32) 
 re(2): computer verification  simulation by Charlie (20201129 20:50:02) 
 re: computer verification  bug  changed result by Charlie (20201129 18:43:18) 
 computer verification by Charlie (20201129 15:40:07) 
Under 2 absent digits (in Numbers) Posted on 20201128 (6 Comments) 
 computer solution with an extension by Charlie (20201128 12:30:37) 
Under Maximal of a function (in Calculus) Posted on 20201125 (2 Comments) 
 also minima by Charlie (20201125 15:09:57) 
 No proof, but approx max found by Charlie (20201125 14:24:53) 
Under Rubik's cut (in Just Math) Posted on 20201124 (2 Comments) 
 solution by Charlie (20201124 13:00:13) 
Under Calculator at rescue? (in Just Math) Posted on 20201123 (3 Comments) 
 What does it mean? by Charlie (20201123 10:38:24) 
Under Why Fight II (in Numbers) Posted on 20201118 (1 Comments) 
 computer alphametic solution; manual matching of the phrases by Charlie (20201118 14:53:32) 
Under Go left of the number (in Numbers) Posted on 20201115 (4 Comments) 
 an idea (with spoilersolution) by Charlie (20201115 11:49:18) 
Under Dive deep after the decimal point (in Numbers) Posted on 20201113 (2 Comments) 
 unsatisfying computer solution by Charlie (20201114 20:40:24) 
Under Fit the middle digit (in Numbers) Posted on 20201112 (4 Comments) 
 computer solution by Charlie (20201112 16:11:33) 
Under Clock a doodle do (in Just Math) Posted on 20201109 (3 Comments) 
 re: solution  the times by Charlie (20201109 12:18:44) 
 solution by Charlie (20201109 09:55:43) 
Under Sequence number compressed (in Just Math) Posted on 20201028 (7 Comments) 
 re(2): computer solution by Charlie (20201028 19:11:07) 
 computer solution by Charlie (20201028 10:52:22) 
Under Money giveaway (in Numbers) Posted on 20201026 (5 Comments) 
 re: A possible generalization by Charlie (20201029 10:30:24) 
 The values by Charlie (20201026 15:25:56) 
Under Quick divisibility (in Numbers) Posted on 20201020 (4 Comments) 
 the computer method by Charlie (20201020 09:33:54) 
Under Concatenation of Prime Factors is Pandigital (in Numbers) Posted on 20201015 (2 Comments) 
 computer solution  spoiler by Charlie (20201015 10:39:46) 
Under Find the pairs (in Numbers) Posted on 20201013 (14 Comments) 
 computer exploration by Charlie (20201013 10:22:11) 
Under The angle bisectors (in Geometry) Posted on 20201010 (1 Comments) 
 computer solution by Charlie (20201010 15:29:57) 
Under Pages and Squires 2 (in Liars and Knights) Posted on 20201008 (2 Comments) 
 solution without proof of uniqueness by Charlie (20201008 13:47:48) 
Under Goldin pyramid (in Shapes) Posted on 20201006 (7 Comments) 
 re(2): computer solution by Charlie (20201007 15:50:23) 
 re: computer solution by Charlie (20201007 09:06:12) 
 computer solution by Charlie (20201007 06:59:46) 
Under All odd digit (in Numbers) Posted on 20201005 (6 Comments) 
 solution by Charlie (20201005 10:49:40) 
Under Triplets cubed (in Numbers) Posted on 20201004 (3 Comments) 
 part b by Charlie (20201004 12:02:58) 
 part a by Charlie (20201004 11:57:36) 
Under Look b4 U leap (in Logic) Posted on 20201002 (3 Comments) 
 just to make it the intended target by Charlie (20201002 13:48:47) 
Under Prime equation 2 (in Numbers) Posted on 20201001 (3 Comments) 
 computer findings by Charlie (20201001 09:45:39) 
Under What follows? (in Sequences) Posted on 20200926 (1 Comments) 
 I don't know if this helps, but... by Charlie (20200926 08:01:53) 
Under Extreme inequality (in Just Math) Posted on 20200923 (3 Comments) 
 continuation: computer explorationprobably complete solution by Charlie (20200923 09:40:49) 
 computer explorationprobably complete solution by Charlie (20200923 09:38:48) 
Under Must be prime (in Sequences) Posted on 20200922 (1 Comments) 
 one possible take on it by Charlie (20200922 10:58:39) 
Under An Iterated Floor Equation (in Numbers) Posted on 20200915 (8 Comments) 
 the graph and table method by Charlie (20200915 13:54:23) 
Under 50  or more (in Numbers) Posted on 20200910 (14 Comments) 
 re(3): Record by Charlie (20200917 07:11:11) 
 re(3): some hints & remarks @ Ch by Charlie (20200911 07:38:31) 
 re: Record by Charlie (20200910 20:58:48) 
 another, higher by Charlie (20200910 15:17:37) 
 computer finding by Charlie (20200910 14:25:40) 
Under 2 related tasks (in Numbers) Posted on 20200907 (4 Comments) 
 Another solution for first by Charlie (20200908 06:35:47) 
Under Cities, Countries and Colors (in Word Problems) Posted on 20200906 (2 Comments) 
 some computer assistance by Charlie (20200906 11:29:06) 
Under WG’s unique number (in Numbers) Posted on 20200904 (7 Comments) 
 re: alternatively.... by Charlie (20200904 21:47:07) 
 computer method solution by Charlie (20200904 11:57:15) 
Under A peculiar function! (in Just Math) Posted on 20200903 (5 Comments) 
 re: computer solution and a fitted polynomial by Charlie (20200903 18:49:18) 
 computer solution and a fitted polynomial by Charlie (20200903 12:11:10) 
Under Permuted average (in Numbers) Posted on 20200901 (3 Comments) 
 computer solution and discussion by Charlie (20200901 11:00:36) 
Under Now, before and later (in Numbers) Posted on 20200826 (2 Comments) 
 Is this a solution? by Charlie (20200826 15:49:59) 
Under Square Reciprocal Summation (in Just Math) Posted on 20200825 (5 Comments) 
 re: Here is another... No computer used this time. by Charlie (20200826 07:13:04) 
 UBASIC solution by Charlie (20200825 11:22:20) 
Under Check this sequence (in Sequences) Posted on 20200824 (3 Comments) 
 parts 1 & 2  computer solution by Charlie (20200824 20:07:33) 
Under Average Of Digits of powers (in Numbers) Posted on 20200820 (7 Comments) 
 re(3): Misunderstanding of Part 3 by Charlie (20200823 18:40:22) 
 computer solution by Charlie (20200820 21:38:52) 
Under Ask and solve cubes (in Numbers) Posted on 20200817 (5 Comments) 
 re(2): computer solution by Charlie (20200825 11:31:12) 
 computer solution by Charlie (20200817 14:43:53) 
Under Numbered Balls in Test Tubes 2 (in Logic) Posted on 20200810 (5 Comments) 
 re: One way  may not be optimal? by Charlie (20200811 07:10:50) 
Under Cosine cups (in Shapes) Posted on 20200807 (5 Comments) 
 re: Solution by Charlie (20200810 07:31:54) 
 re: Solution by Charlie (20200809 21:52:30) 
 re: If... by Charlie (20200808 07:35:07) 
 If... by Charlie (20200807 12:09:02) 
Under Three Digit Number 3 (in Numbers) Posted on 20200805 (4 Comments) 
 choices, with solution by Charlie (20200805 12:32:40) 
Under Erase a prime (in Numbers) Posted on 20200803 (4 Comments) 
 computer solution by Charlie (20200803 13:45:23) 
Under Yoshigahara's Masterpiece (in Logic) Posted on 20200731 (3 Comments) 
 re(2): Ez by Charlie (20200902 06:57:33) 
Under Gamow's Elevator (in Probability) Posted on 20200726 (10 Comments) 
 re(3): what I have so far...  Hint by Charlie (20200728 07:03:03) 
 re: what I have so far...  Hint by Charlie (20200727 21:51:43) 
 clarifications by Charlie (20200727 07:03:52) 
Under 7 matches (in Word Problems) Posted on 20200715 (3 Comments) 
 computer solution by Charlie (20200715 22:52:22) 
Under A prime and a cube (in Numbers) Posted on 20200713 (8 Comments) 
 re(2): Just an observation (on an interesting program line) by Charlie (20200714 07:35:28) 
 re(2): Just an observation by Charlie (20200713 17:32:39) 
 re: Just an observation by Charlie (20200713 15:44:09) 
 Just an observation by Charlie (20200713 15:23:45) 
Under 7 hypotenuses (in Numbers) Posted on 20200710 (4 Comments) 
 re: Research by Charlie (20200713 07:48:35) 
 computer solution by Charlie (20200710 10:24:33) 
Under Four generations (in Numbers) Posted on 20200706 (9 Comments) 
 apologies to steven by Charlie (20200706 10:34:16) 
 re: part 1 via computer by Charlie (20200706 10:22:55) 
 computer solution by Charlie (20200706 10:15:25) 
Under Average other (in Numbers) Posted on 20200701 (5 Comments) 
 computer solution by Charlie (20200701 18:55:33) 
Under A coded text (in General) Posted on 20200626 (5 Comments) 
 VB program and solution by Charlie (20200626 14:34:05) 
Under Best quotient (in Word Problems) Posted on 20200624 (4 Comments) 
 No Subject by Charlie (20200624 21:03:13) 
Under Fibo's common divider (in Sequences) Posted on 20200610 (4 Comments) 
 re: computer solution by Charlie (20200611 05:49:13) 
 computer solution by Charlie (20200610 19:18:12) 
Under Can you do it? (in Games) Posted on 20200608 (2 Comments) 
 solution by Charlie (20200608 21:40:37) 
Under Almost a half (in Just Math) Posted on 20200515 (6 Comments) 
 re(2): solution (to tedious to do manually) by Charlie (20200515 10:59:52) 
 solution (to tedious to do manually) by Charlie (20200515 09:46:18) 
 re: Possible solution by Charlie (20200515 09:42:06) 
Under Luck beats theory (in Probability) Posted on 20200504 (3 Comments) 
 a. and b. by Charlie (20200504 22:54:55) 
Under WG's portfolio (in Just Math) Posted on 20200427 (4 Comments) 
 agree with xdog's solution by Charlie (20200427 18:56:14) 
Under Two Digit Average 2 (in Numbers) Posted on 20200415 (2 Comments) 
 of course by Charlie (20200416 07:58:35) 
Under Select the right subset (in Word Problems) Posted on 20200410 (3 Comments) 
 re: max found by computer by Charlie (20200410 11:45:01) 
 re: max found by computer by Charlie (20200410 11:34:42) 
 max found by computer by Charlie (20200410 11:28:58) 
Under Digits of numbers (in Numbers) Posted on 20200330 (4 Comments) 
 solution by Charlie (20200330 21:12:59) 
Under p(Ascending Number) closest to .01 (in Probability) Posted on 20200316 (3 Comments) 
 the full set by Charlie (20200316 15:08:07) 
Under What time is it now? (in General) Posted on 20200309 (5 Comments) 
 re: Solution by Charlie (20200309 18:53:00) 
Under The Celebrated Jumping Frog of Perplexus County (in Probability) Posted on 20200304 (2 Comments) 
 analysis and simulation by Charlie (20200304 12:34:07) 
Under Thrifty dates (in Numbers) Posted on 20200222 (3 Comments) 
 computer solution posted a bit later than 20:20 GMT by Charlie (20200222 14:13:08) 
Under Coded Crossword 3 (in Cryptography) Posted on 20200221 (4 Comments) 
 manual solution with computer assistance for making substitutions by Charlie (20200222 14:49:53) 
Under pot draw permutations (in Numbers) Posted on 20200212 (2 Comments) 
 outline of a solution methodology by Charlie (20200212 19:01:48) 
Under Certain old trade (in General) Posted on 20200122 (5 Comments) 
 needs someone who knows Italian by Charlie (20200122 10:22:58) 
Under 13 L2L (in Word Problems) Posted on 20191225 (7 Comments) 
 some thoughts by Charlie (20191225 21:21:57) 
Under Three Squares make a Triangle (in Shapes) Posted on 20191223 (3 Comments) 
 partial approximate solution via GSP by Charlie (20191223 13:32:32) 
Under Poetry, not poverty (in Just Math) Posted on 20191218 (2 Comments) 
 computer solution (spoiler) by Charlie (20191218 12:34:41) 
Under Gold in the Exponent (in Numbers) Posted on 20191211 (4 Comments) 
 computer solution by Charlie (20191211 12:47:13) 
Under Nobody's Perfect (in Just Math) Posted on 20191204 (5 Comments) 
 guesstimate by Charlie (20191204 15:30:49) 
Under Can we use Pigeonhole? (in Numbers) Posted on 20191126 (3 Comments) 
 My apologies for the previous title by Charlie (20191126 11:33:27) 
 my solution  without pigeonhole  including lowest such number by Charlie (20191126 11:29:13) 
Under Spherplex (in Just Math) Posted on 20191125 (3 Comments) 
 solution by Charlie (20191125 10:37:42) 
Under SOD cubed equals Sum of Squares of SODs (in Numbers) Posted on 20191120 (3 Comments) 
 computeraided solution by Charlie (20191120 14:15:56) 
Under The Big Division (in Numbers) Posted on 20191118 (4 Comments) 
 solution the other way around by Charlie (20191118 12:31:20) 
Under Factor distribution in a school (in Numbers) Posted on 20191113 (11 Comments) 
 re: maybe a soln..... by Charlie (20191113 15:04:33) 
Under Roll a unit (in Probability) Posted on 20191106 (2 Comments) 
 Inthehead solution (spoiler) by Charlie (20191106 10:31:12) 
Under Two methods (in Word Problems) Posted on 20191030 (2 Comments) 
 computeraided solution by Charlie (20191030 15:43:12) 
Under Cube rooted till 2019 (in Just Math) Posted on 20191023 (3 Comments) 
 computer summationspoiler by Charlie (20191023 13:17:47) 
Under Ardent tennis player (in Just Math) Posted on 20191022 (1 Comments) 
 solution by Charlie (20191022 13:58:12) 
Under Interval Guessing (in General) Posted on 20191021 (10 Comments) 
 correction to previous post by Charlie (20191025 18:33:40) 
 re(2): Full solution: 15 and beyond by Charlie (20191025 11:53:07) 
 re(3): some thoughts  cases of small n by Charlie (20191023 21:36:27) 
 re: some thoughts  cases of small n by Charlie (20191023 13:37:56) 
 solution by Charlie (20191021 21:16:51) 
Under Some Sum of Some Sum (in Numbers) Posted on 20191018 (2 Comments) 
 computer solution by Charlie (20191018 13:34:48) 
Under It's not a Magic Square (in Numbers) Posted on 20191017 (2 Comments) 
 computer solution by Charlie (20191017 13:53:36) 
Under Tricky sums indeed! (in Numbers) Posted on 20191010 (3 Comments) 
 computeraided solution by Charlie (20191010 12:08:48) 
Under One in all (in Word Problems) Posted on 20191009 (6 Comments) 
 some answers by Charlie (20191009 13:45:25) 
Under The middle number (in Probability) Posted on 20191008 (5 Comments) 
 solution by Charlie (20191008 14:38:50) 
 re: proposed solution by Charlie (20191008 13:35:47) 
Under An important virtue (in Word Problems) Posted on 20191007 (1 Comments) 
 spoiler by Charlie (20191007 14:32:55) 
Under 8 eights, 8 ones (in Just Math) Posted on 20191001 (3 Comments) 
 computer solution by Charlie (20191001 15:44:37) 
Under Hexagonal interior point (in Geometry) Posted on 20190924 (5 Comments) 
 solution by Charlie (20190924 14:57:14) 
Under Hexagonal Spider Web (in Probability) Posted on 20190912 (7 Comments) 
 re: my solution by Charlie (20190912 19:34:38) 
 re: my solution by Charlie (20190912 19:03:28) 
 my solution by Charlie (20190912 18:49:10) 
Under A matter of perspective (in Shapes) Posted on 20190911 (1 Comments) 
 solution by Charlie (20190911 09:57:14) 
Under One way out (in Just Math) Posted on 20190909 (1 Comments) 
 solution by Charlie (20190909 09:29:05) 
Under Reduced to single digit (in Numbers) Posted on 20190906 (14 Comments) 
 re(4): Possible solution by Charlie (20190913 20:46:43) 
 re: Thoughts by Charlie (20190910 12:47:44) 
Under 14 * A to T (in Word Problems) Posted on 20190904 (3 Comments) 
 all but one by Charlie (20190904 09:41:07) 
Under Beautiful recursion (in Just Math) Posted on 20190903 (2 Comments) 
 computer observation and solution by Charlie (20190903 11:14:16) 
Under Bored student (in Just Math) Posted on 20190830 (4 Comments) 
 partial solution by Charlie (20190830 13:02:05) 
Under Money in the word (in Word Problems) Posted on 20190829 (1 Comments) 
 computer solution by Charlie (20190829 14:24:13) 
Under Summing the product of digits (in Numbers) Posted on 20190823 (4 Comments) 
 revised solution by Charlie (20190823 12:18:08) 
 re: solution  I forgot about something by Charlie (20190823 11:11:35) 
 solution by Charlie (20190823 10:54:18) 
Under Rotated Checkerboard (in Just Math) Posted on 20190822 (2 Comments) 
 No Subject by Charlie (20190822 11:24:22) 
Under A Triangle in a Square (in Geometry) Posted on 20190821 (6 Comments) 
 Wolfram Alpha exact solution via 5 equations by Charlie (20190821 12:25:00) 
 Geometer's Sketchpad approximation by Charlie (20190821 10:18:54) 
Under Yahtzee (in Probability) Posted on 20190820 (1 Comments) 
 computeraided solution by Charlie (20190820 12:22:45) 
Under Irrational Distance/Rational Areas (in Just Math) Posted on 20190819 (4 Comments) 
 solution by Charlie (20190819 12:44:02) 
Under Recursive reaches one million (in Numbers) Posted on 20190815 (4 Comments) 
 re: computer solution with pattern the rest of the output by Charlie (20190815 13:27:31) 
 computer solution with pattern by Charlie (20190815 09:18:37) 
Under Digitally Average Integers (in Numbers) Posted on 20190814 (2 Comments) 
 computer solution by Charlie (20190814 09:41:12) 
Under Peoples Day (in Just Math) Posted on 20190812 (3 Comments) 
 computeraided solution by Charlie (20190812 22:46:02) 
Under Getting 8 (in Numbers) Posted on 20190811 (34 Comments) 
 computer solution by Charlie (20190811 12:28:47) 
Under Squared average equals square (in Numbers) Posted on 20190809 (3 Comments) 
 computer solution by Charlie (20190809 12:59:34) 
Under Unique letters (in Word Problems) Posted on 20190808 (1 Comments) 
 computer solution (spoiler) by Charlie (20190808 10:31:11) 
Under A Mysterious Multiplication (in Numbers) Posted on 20190807 (3 Comments) 
 re: No Subject by Charlie (20190809 13:07:43) 
 computer solution by Charlie (20190807 09:43:28) 
Under One or more? (in Word Problems) Posted on 20190806 (2 Comments) 
 computer solution by Charlie (20190806 11:54:37) 
Under points or pigeons in square? (in Just Math) Posted on 20190805 (8 Comments) 
 re(2): what? by Charlie (20190805 21:27:17) 
 what? by Charlie (20190805 18:31:13) 
Under Digital computing (in Numbers) Posted on 20190803 (3 Comments) 
 computer solutionI think what's wanted by Charlie (20190803 13:01:15) 
Under 444...444 (in Numbers) Posted on 20190802 (5 Comments) 
 re: solution by Charlie (20190802 13:37:55) 
 computer solution by Charlie (20190802 13:36:38) 
Under Gifts exchanged (in Logic) Posted on 20190729 (2 Comments) 
 solution by Charlie (20190729 10:50:08) 
Under Rods as triangle sides (in Just Math) Posted on 20190728 (1 Comments) 
 No Subject by Charlie (20190728 14:41:04) 
Under Pairs of primes (in Probability) Posted on 20190727 (10 Comments) 
 An extension by Charlie (20190731 10:50:14) 
 re: via computer  the start of the soln by Charlie (20190728 07:58:12) 
 re(2): computer solution through n=6 list continued by Charlie (20190727 22:01:14) 
 re: computer solution through n=6 list continued by Charlie (20190727 22:00:18) 
 computer solution through n=6 by Charlie (20190727 21:57:42) 
Under 15 A2A (in Word Problems) Posted on 20190726 (3 Comments) 
 a start by Charlie (20190726 07:40:00) 
Under Bugs on a pentagon (in Just Math) Posted on 20190724 (2 Comments) 
 proposed solution by Charlie (20190724 12:28:08) 
Under Conversion Diversion (in Just Math) Posted on 20190723 (2 Comments) 
 solution by Charlie (20190723 13:06:16) 
Under How do I know the time? (in Just Math) Posted on 20190720 (1 Comments) 
 algebraic analysis and computer solution by Charlie (20190720 12:38:54) 
Under Keep an eye Onto the other (in Just Math) Posted on 20190719 (4 Comments) 
 re: solution by Charlie (20190719 10:19:47) 
Under Approximate value (in Numbers) Posted on 20190717 (2 Comments) 
 answers by Charlie (20190717 15:46:34) 
Under Quick integral (in Calculus) Posted on 20190716 (1 Comments) 
 solution by Charlie (20190716 10:14:01) 
Under Describe the decimal (in Numbers) Posted on 20190712 (3 Comments) 
 computeraided solution by Charlie (20190712 12:09:54) 
Under Trying to get better (in Just Math) Posted on 20190711 (4 Comments) 
 re(2): hmmmm... Try again  there are numerous solutions... by Charlie (20190711 17:21:46) 
 hmmmm... by Charlie (20190711 13:41:46) 
Under 249yes, 5no (in Numbers) Posted on 20190708 (2 Comments) 
 solution by Charlie (20190708 14:39:41) 
Under Hexagonally closer (in Just Math) Posted on 20190707 (3 Comments) 
 A start by Charlie (20190707 09:57:04) 
Under Square and Rectangle (in Geometry) Posted on 20190704 (3 Comments) 
 GSP solution by Charlie (20190704 14:37:07) 
Under A special triplet (in Numbers) Posted on 20190702 (2 Comments) 
 solution by Charlie (20190703 03:59:31) 
Under Synonyms (in Word Problems) Posted on 20190701 (3 Comments) 
 computeraided solution by Charlie (20190701 09:25:09) 
Under Quick factors III (in Numbers) Posted on 20190627 (1 Comments) 
 solution by Charlie (20190627 15:39:24) 
Under Cryptajoke XIX (in Word Problems) Posted on 20190618 (1 Comments) 
 solution by Charlie (20190618 22:27:13) 
Under A four number puzzle (in Just Math) Posted on 20190615 (5 Comments) 
 re(2): proposed solution  higher value by Charlie (20190616 21:33:26) 
Under Just Hangin' around (in Just Math) Posted on 20190614 (10 Comments) 
 re: method .... by Charlie (20190614 22:17:12) 
 just a thought by Charlie (20190614 11:15:50) 
Under Primes and Semiprimes (in Numbers) Posted on 20190612 (1 Comments) 
 computer solution by Charlie (20190612 12:12:48) 
Under Pouring water (in Shapes) Posted on 20190606 (2 Comments) 
 solution by Charlie (20190606 15:54:26) 
Under Number dilemma (in Numbers) Posted on 20190605 (12 Comments) 
 computer solution by Charlie (20190605 12:29:13) 
Under Tangent of string of 5 (in Just Math) Posted on 20190604 (3 Comments) 
 re: Again, quite interesting by Charlie (20190605 12:23:35) 
Under Oned square root (in Numbers) Posted on 20190603 (3 Comments) 
 thoughts by Charlie (20190603 22:02:55) 
Under Sliced sphere (in Shapes) Posted on 20190529 (4 Comments) 
 re: attempted soln by Charlie (20190530 10:52:58) 
Under Who's on the 4th base? (in Numbers) Posted on 20190528 (3 Comments) 
 re: computer solution and extension continued by Charlie (20190528 15:53:51) 
 computer solution and extension by Charlie (20190528 15:51:13) 
Under Divisors' sum = square (in Numbers) Posted on 20190527 (7 Comments) 
 computer solution by Charlie (20190527 15:54:32) 
Under The Bug Climber (in Just Math) Posted on 20190522 (2 Comments) 
 re: solution by Charlie (20190523 10:38:23) 
 solution by Charlie (20190522 20:12:38) 
Under Soft car for cats (in Numbers) Posted on 20190522 (2 Comments) 
 partway, I think by Charlie (20190522 12:29:57) 
Under Squarely chained (in Numbers) Posted on 20190521 (1 Comments) 
 computer solution by Charlie (20190521 16:17:35) 
Under Carry on, Decimal (in Numbers) Posted on 20190520 (3 Comments) 
 solution by Charlie (20190520 19:24:02) 
Under Evened N and 3N (in Numbers) Posted on 20190518 (1 Comments) 
 computer solution by Charlie (20190518 14:07:48) 
Under Calculator can't handle it (in Numbers) Posted on 20190517 (1 Comments) 
 solution by Charlie (20190517 19:25:55) 
Under Marks on Marks off (in Numbers) Posted on 20190515 (2 Comments) 
 solution by Charlie (20190515 16:56:55) 
Under Concatenation sum (in Numbers) Posted on 20190515 (2 Comments) 
 computeraided solution by Charlie (20190515 11:23:30) 
Under Prime wisdom (in Logic) Posted on 20190514 (3 Comments) 
 Errare humanum est, Ady's in good company. A propos indeed. by Charlie (20190516 10:31:51) 
 a computer beginning by Charlie (20190514 14:46:42) 
Under The road less travelled (in Just Math) Posted on 20190514 (1 Comments) 
 solution by Charlie (20190514 11:42:43) 
Under Chemical deduction (in Logic) Posted on 20190513 (9 Comments) 
 solution by Charlie (20190513 12:45:21) 
Under Precision counts! (in Sequences) Posted on 20190512 (4 Comments) 
 re: 1st attempt  not complete by Charlie (20190512 09:27:24) 
Under No copying, students (in Probability) Posted on 20190510 (2 Comments) 
 computeraided solution by Charlie (20190510 14:15:08) 
Under Integer coordinates (in Numbers) Posted on 20190509 (1 Comments) 
 solution by Charlie (20190509 14:18:54) 
Under Odd partition (in Numbers) Posted on 20190509 (2 Comments) 
 computer solution by Charlie (20190509 14:13:14) 
Under A hairy problem (in Just Math) Posted on 20190508 (1 Comments) 
 computer solution with assumptions by Charlie (20190508 17:22:51) 
Under Summed LCM (in Numbers) Posted on 20190508 (1 Comments) 
 solution by Charlie (20190508 10:53:48) 
Under A geometric gangster shooting (in Just Math) Posted on 20190506 (6 Comments) 
 re(2): A guess (spoiler?) by Charlie (20190506 18:21:38) 
 re(2): A guess (spoiler?) by Charlie (20190506 17:01:42) 
Under Diagonal mystery (in Geometry) Posted on 20190504 (2 Comments) 
 computer solution by Charlie (20190504 13:53:04) 
Under Single, Double & Triple Scoops (in Just Math) Posted on 20190503 (1 Comments) 
 solution two ways by Charlie (20190503 09:06:09) 
Under Number Cards Before Face Cards (in Probability) Posted on 20190502 (6 Comments) 
 Hint by Charlie (20190506 07:51:34) 
Under The right time (in Just Math) Posted on 20190502 (1 Comments) 
 solution by Charlie (20190506 11:33:25) 
Under The powers and the exponent (in Calculus) Posted on 20190501 (1 Comments) 
 solution by Charlie (20190501 18:24:26) 
Under Missing letter (in Logic) Posted on 20190501 (3 Comments) 
 re: almost (w/spoiler) by Charlie (20190501 11:11:51) 
Under The special ones among the group (in Numbers) Posted on 20190430 (1 Comments) 
 solution by Charlie (20190430 12:29:11) 
Under Bit filling in 5*5 grid! (in Just Math) Posted on 20190426 (3 Comments) 
 computer solution by Charlie (20190426 12:39:15) 
Under Arithmetic prime (in Numbers) Posted on 20190425 (2 Comments) 
 computer solution by Charlie (20190425 14:50:25) 
Under He stole my ball! (in Probability) Posted on 20190424 (8 Comments) 
 re(2): computer assissted solution by Charlie (20190425 15:30:08) 
 re: related problem by Charlie (20190425 14:26:53) 
 computer assissted solution by Charlie (20190424 16:44:02) 
Under How many qualified numbers? (in Numbers) Posted on 20190424 (1 Comments) 
 solution by Charlie (20190424 11:57:48) 
Under A Jewish dilemma (in Word Problems) Posted on 20190419 (1 Comments) 
 solution by Charlie (20190419 12:29:03) 
Under Breaking the Jewel code (in Numbers) Posted on 20190417 (4 Comments) 
 some thoughts by Charlie (20190417 11:03:51) 
Under 2000 9s (in Numbers) Posted on 20190415 (1 Comments) 
 solution by Charlie (20190415 19:47:46) 
Under 4 and 5 powered (in Numbers) Posted on 20190412 (1 Comments) 
 computer solution by Charlie (20190412 13:24:58) 
Under The number n in n^2 (in Numbers) Posted on 20190411 (2 Comments) 
 in Basic by Charlie (20190411 15:27:08) 
Under Blobs' Borders 2 (in Shapes) Posted on 20190410 (4 Comments) 
 re(2): solution  another way (attempt) by Charlie (20190416 11:41:08) 
 re: solution by Charlie (20190416 11:35:48) 
Under Based on threes! (in Numbers) Posted on 20190409 (3 Comments) 
 solution with computation by program, with a oneparagraph analytic method by Charlie (20190409 16:03:12) 
Under Just count them ! (in Just Math) Posted on 20190409 (2 Comments) 
 computer solution by Charlie (20190409 10:55:30) 
Under Matrixed Fibonacci (in Just Math) Posted on 20190408 (2 Comments) 
 answer (computer exploration) by Charlie (20190408 16:41:42) 
Under The devilish 9 roots (in Just Math) Posted on 20190406 (1 Comments) 
 Wolfram Alpha's solution by Charlie (20190406 14:25:27) 
Under Imagine the world (in Shapes) Posted on 20190405 (1 Comments) 
 delayed aha! moment after too much algebra by Charlie (20190405 18:06:57) 
Under Hot and Cold Cubes (in Science) Posted on 20190404 (6 Comments) 
 re(2): Missing info? Or solution? Example by Charlie (20190405 11:18:22) 
Under Asymmetrical String (in Numbers) Posted on 20190404 (1 Comments) 
 solution by Charlie (20190404 10:58:06) 
Under HySpherical (in Shapes) Posted on 20190403 (1 Comments) 
 if my algebra was careful enough... by Charlie (20190403 23:18:59) 
Under Sine in Exponent (in Just Math) Posted on 20190403 (14 Comments) 
 re: 2 possible solutions by Charlie (20190403 13:52:27) 
Under Taramasalata inspired world (in Word Problems) Posted on 20190401 (21 Comments) 
 correcting my error and summing up by Charlie (20190418 20:21:48) 
 apologies by Charlie (20190418 15:40:22) 
 more mountains by Charlie (20190418 15:27:35) 
 mountains by Charlie (20190418 14:00:35) 
 countries by Charlie (20190418 11:02:37) 
 re(2): Some cities and states were missed by Charlie (20190418 10:49:14) 
 re: Some cities and states were missed by Charlie (20190417 21:19:53) 
 Some cities and states were missed by Charlie (20190417 20:50:11) 
 World cities and U.S. states  same idea  from Wikipedia pages by Charlie (20190417 20:33:34) 
 Rivers in the U.S.  computer findings by Charlie (20190417 15:03:53) 
Under Closer to your roots (in Just Math) Posted on 20190328 (1 Comments) 
 from Wolfram Alpha by Charlie (20190328 17:15:38) 
Under A Divisor Diversion (in Numbers) Posted on 20190327 (4 Comments) 
 computer explorationprobable solution by Charlie (20190327 17:22:04) 
Under Divisor in between (in Numbers) Posted on 20190326 (1 Comments) 
 solution by Charlie (20190326 13:38:09) 
Under Larger Square (in Numbers) Posted on 20190325 (1 Comments) 
 computer solution by Charlie (20190325 12:46:21) 
Under Sickquence (in Just Math) Posted on 20190320 (1 Comments) 
 computer solution by Charlie (20190320 11:13:28) 
Under Math is radical (in Numbers) Posted on 20190319 (2 Comments) 
 computer attempt is close but no cigar by Charlie (20190319 15:00:51) 
Under Factor it (in Numbers) Posted on 20190319 (3 Comments) 
 re: Solution .... hmmm by Charlie (20190319 11:37:55) 
Under Is this circular billiards? (in Geometry) Posted on 20190318 (4 Comments) 
 re(2): Geometer's Sketchpad approximation by Charlie (20190318 19:49:15) 
 Geometer's Sketchpad approximation by Charlie (20190318 17:09:09) 
Under Weird equations (in Just Math) Posted on 20190318 (2 Comments) 
 Wolfram Alpha's solution by Charlie (20190318 12:41:51) 
Under Quad composition (in Just Math) Posted on 20190316 (4 Comments) 
 re(2): calculator solution by Charlie (20190316 14:19:55) 
 re: calculator solution by Charlie (20190316 13:32:54) 
 calculator solution by Charlie (20190316 13:20:33) 
Under The Tiny Triangle (in Shapes) Posted on 20190315 (2 Comments) 
 Geometer's Sketchpad approximation by Charlie (20190315 17:30:47) 
Under Where is the center? (in Geometry) Posted on 20190315 (3 Comments) 
 How my method must have gone wrong by Charlie (20190315 13:03:51) 
Under 'Two' many roots (in Just Math) Posted on 20190314 (2 Comments) 
 solution by Charlie (20190314 15:54:56) 
Under Shifting the digit II (in Numbers) Posted on 20190313 (1 Comments) 
 computeraided solution by Charlie (20190313 13:30:43) 
Under A Golden Fraction (in Numbers) Posted on 20190312 (2 Comments) 
 UBASIC solution (spoiler) by Charlie (20190312 15:51:27) 
Under Shifting the digit (in Numbers) Posted on 20190311 (3 Comments) 
 computer solution by Charlie (20190311 17:42:32) 
Under Minimizing the Denominator (in Numbers) Posted on 20190308 (2 Comments) 
 computer solution by Charlie (20190308 16:19:45) 
Under Corruption in my file (in Probability) Posted on 20190307 (1 Comments) 
 solution by Charlie (20190307 13:08:51) 
Under What's the calculator doing? (in General) Posted on 20190306 (4 Comments) 
 solution by Charlie (20190306 15:26:51) 
Under A Great Greatest Common Divisor (in Numbers) Posted on 20190306 (2 Comments) 
 solution by Charlie (20190306 10:46:15) 
Under The Great Comparison (in Numbers) Posted on 20190302 (5 Comments) 
 the answer by Charlie (20190302 15:52:04) 
Under 2018 to 2019 (in Numbers) Posted on 20190301 (3 Comments) 
 solution by Charlie (20190301 13:33:13) 
Under And counting (in Numbers) Posted on 20190228 (4 Comments) 
 Wolfram Alpha's solution by Charlie (20190228 19:43:36) 
Under Odd one out (in Word Problems) Posted on 20190228 (2 Comments) 
 solution by Charlie (20190228 15:16:29) 
Under Shifted regions (in Just Math) Posted on 20190227 (4 Comments) 
 re: solution  math and computer by Charlie (20190228 15:33:07) 
 solution by Charlie (20190227 15:09:30) 
Under Add no DANDY  No need ! (in Word Problems) Posted on 20190225 (1 Comments) 
 words from my computer's word list (spoiler) by Charlie (20190225 14:58:33) 
Under Counting Digit (in Numbers) Posted on 20190225 (1 Comments) 
 how long does this method work? (spoiler) by Charlie (20190225 11:50:29) 
Under Palindromes' divisibility (in Numbers) Posted on 20190222 (2 Comments) 
 re: Mentally by Charlie (20190226 09:38:22) 
Under Unlikely event (in Numbers) Posted on 20190221 (3 Comments) 
 solution by Charlie (20190221 11:37:43) 
Under Twin and reversible (in Numbers) Posted on 20190220 (4 Comments) 
 solution and extension by Charlie (20190220 13:06:07) 
Under Limited reflections (in General) Posted on 20190219 (7 Comments) 
 re(2): There are easy ways by Charlie (20190221 13:43:04) 
 simulation by Charlie (20190220 12:00:19) 
 Much work for a D2 puzzle by Charlie (20190219 16:29:56) 
Under Bifonacci (in Numbers) Posted on 20190219 (2 Comments) 
 re: Solution; also an extension by Charlie (20190219 11:06:49) 
Under Chacun à son goût ! (in Just Math) Posted on 20190218 (3 Comments) 
 re(2): computer solutions, with an extension of the bonus by Charlie (20190219 11:19:31) 
 computer solutions, with an extension of the bonus by Charlie (20190218 16:43:31) 
Under Algebra? (in Just Math) Posted on 20190216 (1 Comments) 
 via Wolfram Alpha by Charlie (20190216 15:11:11) 
Under Recovering the number (in Numbers) Posted on 20190213 (2 Comments) 
 bonus by Charlie (20190213 13:43:15) 
Under The Cut Cube (in Shapes) Posted on 20190213 (4 Comments) 
 solution by Charlie (20190213 12:25:24) 
Under Can you C it? (in Word Problems) Posted on 20190206 (21 Comments) 
 if... by Charlie (20190206 12:22:21) 
Under 3 coprime unknowns (in Numbers) Posted on 20190204 (2 Comments) 
 computer solution by Charlie (20190204 11:55:20) 
Under Integers inside surds (in Numbers) Posted on 20190203 (2 Comments) 
 computer doesn't mind tedium, and discovers duplicates by Charlie (20190206 12:56:35) 
Under Neighbors differ by even numbers (in Numbers) Posted on 20190201 (1 Comments) 
 computeraided solution by Charlie (20190201 16:26:57) 
Under OMG Equation (in Just Math) Posted on 20190201 (1 Comments) 
 Wolfram Alpha's solution by Charlie (20190201 13:23:48) 
Under Only prime digits allowed (in Numbers) Posted on 20190131 (1 Comments) 
 computer solution by Charlie (20190131 15:57:31) 
Under 48th digit in the head (in Just Math) Posted on 20190130 (4 Comments) 
 certainly not in my head (but spoiler present anyway) by Charlie (20190130 15:02:06) 
Under Consistency parameter (in Just Math) Posted on 20190130 (3 Comments) 
 solution by Charlie (20190130 11:38:01) 
Under An enumeration problem (in Just Math) Posted on 20190128 (1 Comments) 
 Let me enumerate the ways  computer solution by Charlie (20190128 15:58:38) 
Under Digit Hunting (in Just Math) Posted on 20190126 (4 Comments) 
 by computer calculation by Charlie (20190126 15:09:29) 
Under Uniform distribution (in Probability) Posted on 20190125 (9 Comments) 
 re: computer solution by Charlie (20190126 16:22:06) 
 computer solution by Charlie (20190126 15:47:54) 
Under More or less 6 days (in Just Math) Posted on 20190124 (6 Comments) 
 re(2): computer solutionall ways by Charlie (20190125 12:53:28) 
 computer solutionall ways by Charlie (20190125 09:08:22) 
Under Digit Anagram (in Numbers) Posted on 20190124 (3 Comments) 
 some examplesfor what they're worth by Charlie (20190124 10:27:13) 
Under Smooth Sum Situation (in Sequences) Posted on 20190123 (3 Comments) 
 computer sum; dumb way and smarter way by Charlie (20190123 15:42:55) 
Under Worm ate the numbers (in Numbers) Posted on 20190118 (2 Comments) 
 computer solution by Charlie (20190119 13:36:45) 
Under Factorial Tremors (in Numbers) Posted on 20190116 (4 Comments) 
 re: Guess by Charlie (20190116 15:20:02) 
Under Dial W for WORD (in Word Problems) Posted on 20190115 (1 Comments) 
 No Subject by Charlie (20190115 15:55:46) 
Under Reach home (in Just Math) Posted on 20190114 (11 Comments) 
 conjecture by Charlie (20190114 16:26:06) 
Under Sine recurrence (in Just Math) Posted on 20190108 (6 Comments) 
 computer solution by Charlie (20190108 11:22:15) 
 re: @ DAK by Charlie (20190108 08:20:15) 
Under Defining a number (in Numbers) Posted on 20190105 (2 Comments) 
 computer solutions by Charlie (20190105 13:47:53) 
Under 4 or more primes (in Numbers) Posted on 20190103 (3 Comments) 
 computer solution by Charlie (20190103 12:42:41) 
Under Ring in the New  again and again and again.. (in Numbers) Posted on 20190101 (2 Comments) 
 playing with the computer in UBASIC by Charlie (20190101 14:53:34) 
Under 24 prescheduled dates (in Just Math) Posted on 20181231 (1 Comments) 
 computeraided solution by Charlie (20181231 22:42:41) 
Under Double perfection (in Numbers) Posted on 20181228 (1 Comments) 
 computer solution by Charlie (20181228 15:26:08) 
Under Restoring a multiplication sample (in Just Math) Posted on 20181227 (1 Comments) 
 computer solutions by Charlie (20181227 11:12:58) 
Under Same digits (in Numbers) Posted on 20181226 (5 Comments) 
 re(2): computer solution by Charlie (20181226 20:02:17) 
 computer solution by Charlie (20181226 10:24:13) 
Under Probably Acute (in Just Math) Posted on 20181221 (12 Comments) 
 re: simulation results by Charlie (20181225 13:18:12) 
 re: Not one answer by Charlie (20181222 08:34:36) 
 simulation results by Charlie (20181221 10:58:56) 
Under Restoring a definition (in Word Problems) Posted on 20181219 (1 Comments) 
 approximate solution  researched by Charlie (20181219 16:03:46) 
Under Concentric Circles and Equilateral Triangle (in Just Math) Posted on 20181215 (2 Comments) 
 GSP Approximation by Charlie (20181215 15:51:06) 
Under Colored triangle (in Sequences) Posted on 20181214 (10 Comments) 
 in case this helps guide the analysis by Charlie (20181214 21:26:20) 
Under All digits distinct (in Numbers) Posted on 20181212 (4 Comments) 
 re: late computer solution by Charlie (20201212 16:11:41) 
 computer solution by Charlie (20181212 15:15:17) 
Under A short list (in Numbers) Posted on 20181211 (2 Comments) 
 computer solution by Charlie (20181211 11:08:27) 
Under The 100th number (in Sequences) Posted on 20181210 (7 Comments) 
 re(3): Hint by Charlie (20190111 11:44:45) 
Under Maximal number of solutions (in Just Math) Posted on 20181208 (5 Comments) 
 Basic language solution by Charlie (20181209 10:13:45) 
Under 8 distinct partitions (in Numbers) Posted on 20181206 (6 Comments) 
 re(2): computer solution by Charlie (20181207 07:23:18) 
 computer solution by Charlie (20181206 22:40:19) 
Under Square after square creates a new square (in Numbers) Posted on 20181205 (3 Comments) 
 supplement containing nontrivializing zeros by Charlie (20181205 10:56:08) 
 computer solution by Charlie (20181205 10:28:31) 
Under Evaluate the sum (in Sequences) Posted on 20181201 (5 Comments) 
 solution based on previous comments by Charlie (20181202 14:05:51) 
Under Mean Diagonals (in Calculus) Posted on 20181123 (4 Comments) 
 one probably wrong way to go about it by Charlie (20181123 11:42:02) 
Under From sum to addends (in Just Math) Posted on 20181122 (1 Comments) 
 answer by Charlie (20181123 11:23:55) 
Under 3 equal products (in Numbers) Posted on 20181121 (10 Comments) 
 re(2): Answer to the bonus. by Charlie (20181124 09:18:48) 
 re(3): Answer to the bonus. by Charlie (20181123 11:26:49) 
 re(2): Answer to the bonus. by Charlie (20181122 18:42:00) 
 re(2): Answer to the bonus. by Charlie (20181122 15:07:47) 
 Answer to the bonus. by Charlie (20181121 13:57:27) 
 re(2): computer solution and partial investigation of the bonus  ctd. by Charlie (20181121 12:14:33) 
 re: computer solution and partial investigation of the bonus  ctd. by Charlie (20181121 12:12:29) 
 computer solution and partial investigation of the bonus by Charlie (20181121 12:10:34) 
Under New word from two others (in Word Problems) Posted on 20181118 (9 Comments) 
 computer failure to find solution by Charlie (20181118 11:45:06) 
Under Sine of Squared (in Calculus) Posted on 20181115 (5 Comments) 
 re: computer solution by Charlie (20181115 11:35:32) 
 computer solution by Charlie (20181115 11:17:41) 
Under Body parts (in Riddles) Posted on 20181106 (7 Comments) 
 what I was thinking by Charlie (20181106 13:32:34) 
Under Sum of the page numbers (in Just Math) Posted on 20181105 (3 Comments) 
 re: Not so simple (spoiler) by Charlie (20181105 10:24:28) 
Under Duelling pairs (in Games) Posted on 20181102 (16 Comments) 
 computeraided solution by Charlie (20181102 15:17:15) 
 starting up by Charlie (20181102 13:08:37) 
Under Defining a sequence (in Just Math) Posted on 20181031 (3 Comments) 
 re: one soln by Charlie (20181031 10:20:18) 
Under Onepeak sets (in Just Math) Posted on 20181030 (4 Comments) 
 re: not sure I understand by Charlie (20181030 17:47:15) 
Under Some slack (in Geometry) Posted on 20181029 (2 Comments) 
 my solution by Charlie (20181029 10:26:14) 
Under Zeta sine (in Just Math) Posted on 20181028 (6 Comments) 
 re(4): Solution (spoiler) by Charlie (20181031 15:01:49) 
 re(2): Solution (spoiler) by Charlie (20181031 14:07:46) 
 re(3): Solution (spoiler) by Charlie (20181031 12:10:31) 
 re(2): Solution (spoiler) by Charlie (20181031 11:56:13) 
 re: Solution (spoiler) by Charlie (20181031 11:26:41) 
Under The wisdom of Windsor (in Word Problems) Posted on 20181026 (2 Comments) 
 via some research by Charlie (20181027 15:59:26) 
Under Chain of Primes (in Numbers) Posted on 20181023 (5 Comments) 
 re: p&p soln by Charlie (20181024 16:21:53) 
Under Squares needing 2 digits only (in Numbers) Posted on 20181021 (3 Comments) 
 computer solution by Charlie (20181021 19:41:09) 
Under A series of primes equals N (in Numbers) Posted on 20181019 (2 Comments) 
 computer solution by Charlie (20181019 11:53:38) 
Under Parcelation (in Geometry) Posted on 20181018 (2 Comments) 
 solution by Charlie (20181018 12:43:00) 
Under Get the bases! (in Just Math) Posted on 20181017 (5 Comments) 
 re: computer soln  my program for it by Charlie (20181017 11:39:24) 
Under Box of balls (in Probability) Posted on 20181016 (6 Comments) 
 solution by Charlie (20181016 11:33:43) 
Under Introducing sphenic numbers (in Numbers) Posted on 20181014 (3 Comments) 
 solution by Charlie (20181014 17:35:31) 
Under Emirps census (in Sequences) Posted on 20181012 (2 Comments) 
 computeraided solution by Charlie (20181012 12:05:22) 
Under Reversal creates average (in Sequences) Posted on 20181010 (7 Comments) 
 re(2): computer soln by Charlie (20181011 08:26:11) 
 re: computer soln by Charlie (20181010 11:37:03) 
 re: computer soln (agree on solutionspoiler present) by Charlie (20181010 11:08:03) 
Under Calling spade a spade (in Numbers) Posted on 20181007 (1 Comments) 
 computer solution by Charlie (20181007 11:11:39) 
Under Feathers of different colors (in Numbers) Posted on 20181006 (2 Comments) 
 computerassisted solution and extension (spoiler) by Charlie (20181006 11:28:05) 
Under 2Z out (in Sequences) Posted on 20181005 (2 Comments) 
 solution by Charlie (20181005 14:52:53) 
Under At least 3 zeroes (in Sequences) Posted on 20181003 (5 Comments) 
 solution by Charlie (20181003 11:58:11) 
Under Monty Hall variant (in Probability) Posted on 20180930 (6 Comments) 
 Monty Hall by Charlie (20180930 10:04:33) 
 strategy (spoiler) by Charlie (20180930 09:34:57) 
Under Prime phone (in Numbers) Posted on 20180928 (1 Comments) 
 computer solution by Charlie (20180928 10:56:13) 
Under Any conclusions? (in Logic) Posted on 20180926 (2 Comments) 
 a conclusion by Charlie (20180926 10:48:24) 
Under True or not (in General) Posted on 20180925 (6 Comments) 
 re(2): mostly a discussion by Charlie (20180925 15:57:25) 
 mostly a discussion by Charlie (20180925 09:48:16) 
Under A logical search (in Numbers) Posted on 20180924 (10 Comments) 
 nonpreferred solution and extension by Charlie (20180924 12:58:00) 
Under Jeopardy style (in Just Math) Posted on 20180923 (2 Comments) 
 another correct response by Charlie (20180923 14:35:46) 
Under Name the sequence (in Sequences) Posted on 20180917 (5 Comments) 
 re: Sequence Name by Charlie (20180917 22:26:19) 
Under A packing exercise (in Shapes) Posted on 20180914 (5 Comments) 
 solution by Charlie (20180914 15:54:23) 
Under Compare them (in Numbers) Posted on 20180908 (7 Comments) 
 re(2): integers for (x,y) by Charlie (20180910 07:49:14) 
 re: proposed solution by Charlie (20180908 17:15:12) 
 proposed solution by Charlie (20180908 13:23:42) 
Under A Cone and a Sphere (in Just Math) Posted on 20180907 (6 Comments) 
 My corrected solution by Charlie (20180908 08:56:08) 
 re: attempted solution by Charlie (20180907 14:05:47) 
 solution by Charlie (20180907 13:57:30) 
Under Weight of nothing in an elevator (in Science) Posted on 20180906 (6 Comments) 
 re: No Subject by Charlie (20180906 15:36:17) 
 proposed solution by Charlie (20180906 10:54:35) 
Under Around the beast number (in Numbers) Posted on 20180904 (4 Comments) 
 re: soln.s by Charlie (20180904 20:11:16) 
Under Complicated Tangency (in Geometry) Posted on 20180901 (2 Comments) 
 solution by Charlie (20180901 14:37:37) 
Under A pet ant (in Shapes) Posted on 20180831 (3 Comments) 
 solution by Charlie (20180831 13:47:28) 
Under Ignoring an error (in Just Math) Posted on 20180830 (2 Comments) 
 solution by Charlie (20180830 14:31:32) 
Under Power tower (in Numbers) Posted on 20180826 (1 Comments) 
 solution by Charlie (20180826 13:39:29) 
Under A set of numbers (in Numbers) Posted on 20180825 (1 Comments) 
 solution by Charlie (20180825 15:45:55) 
Under Ant highway with energy loss (in Calculus) Posted on 20180824 (9 Comments) 
 re: possible analytical approach (thoughts) by Charlie (20180826 12:49:47) 
 re(3): heuristic computer solution by Charlie (20180826 12:44:59) 
 re(2): heuristic computer solution by Charlie (20180825 12:07:58) 
 heuristic computer solution by Charlie (20180824 18:42:13) 
Under A counting task (in Numbers) Posted on 20180823 (7 Comments) 
 re: counting by Charlie (20180823 10:39:44) 
 the numbers by Charlie (20180823 10:01:30) 
 computer solution by Charlie (20180823 10:00:05) 
Under Tax deduction (in Numbers) Posted on 20180822 (6 Comments) 
 re(2): computer solution by Charlie (20180822 13:11:22) 
 computer solution by Charlie (20180822 10:39:55) 
Under What's next? (3) (in Sequences) Posted on 20180819 (3 Comments) 
 researched solution by Charlie (20180819 14:13:48) 
Under Just a search (in Numbers) Posted on 20180818 (5 Comments) 
 computer solution by Charlie (20180818 14:36:33) 
Under Ant highway (in Shapes) Posted on 20180817 (3 Comments) 
 previous post should have been titled solution (spoiler) by Charlie (20180817 14:29:15) 
 No Subject by Charlie (20180817 14:23:48) 
Under Roll away (in Calculus) Posted on 20180815 (4 Comments) 
 re: An approximate look by graphing by Charlie (20180815 12:40:11) 
 An approximate look by graphing by Charlie (20180815 11:50:18) 
Under Tippy table (in Shapes) Posted on 20180814 (3 Comments) 
 solution by Charlie (20180814 13:56:31) 
Under 31 created by 4 successive integers (in Numbers) Posted on 20180813 (7 Comments) 
 answer (spoiler) by Charlie (20180813 14:21:42) 
Under Quintuplet of consecutive primes (in Numbers) Posted on 20180811 (3 Comments) 
 computer solution by Charlie (20180811 13:42:49) 
Under Attendance Records (in Numbers) Posted on 20180810 (4 Comments) 
 re: Solution by Charlie (20180813 14:30:16) 
Under Six or less? (in Just Math) Posted on 20180809 (6 Comments) 
 re(2): Don't get me started... (but) ... by Charlie (20180809 19:06:08) 
 Don't get me started... (but) ... by Charlie (20180809 09:41:01) 
Under Art is marching on.. (in Word Problems) Posted on 20180808 (5 Comments) 
 from my word list by Charlie (20180808 11:36:51) 
Under Shirtless ? Even nude! (in Numbers) Posted on 20180807 (3 Comments) 
 computer solution by Charlie (20180807 10:37:21) 
Under Call 911 (in Just Math) Posted on 20180803 (2 Comments) 
 computer exploration (spoilers) by Charlie (20180803 12:01:41) 
Under 1st 101digit prime (in Numbers) Posted on 20180802 (3 Comments) 
 computer solution by Charlie (20180802 12:25:55) 
Under Lost in Translation (in General) Posted on 20180731 (9 Comments) 
 first one by Charlie (20180731 10:02:27) 
Under Ten to five (in Numbers) Posted on 20180730 (7 Comments) 
 solution (spoiler) by Charlie (20180730 11:03:24) 
Under Special feature (in Numbers) Posted on 20180729 (6 Comments) 
 re(2): computer solution and tidbits from a reference by Charlie (20180730 12:21:41) 
 computer solution and tidbits from a reference by Charlie (20180729 13:06:40) 
Under Square  both ways (in Numbers) Posted on 20180728 (3 Comments) 
 re: computer solutions by Charlie (20180728 11:59:11) 
 computer solutions by Charlie (20180728 11:43:29) 
Under 8191 has a partner (in Numbers) Posted on 20180726 (3 Comments) 
 computer solution by Charlie (20180726 11:26:45) 
Under Night Lights  Light Nights (in Science) Posted on 20180724 (4 Comments) 
 my version by Charlie (20180724 10:14:27) 
Under Oddabundant numbers. (in Numbers) Posted on 20180721 (2 Comments) 
 ... and then some by Charlie (20180721 14:23:19) 
Under An Irrational Demand (in General) Posted on 20180717 (8 Comments) 
 What do you do? by Charlie (20180717 12:15:46) 
Under Garden Path (in General) Posted on 20180716 (3 Comments) 
 browser issue on official solution by Charlie (20180717 08:05:13) 
Under Truncatable primes (in Numbers) Posted on 20180715 (2 Comments) 
 computer solution by Charlie (20180715 19:20:58) 
Under From eleven to ... ETERNITY (in Numbers) Posted on 20180714 (3 Comments) 
 computer solution by Charlie (20180714 15:05:06) 
Under Counting sudokus (in Numbers) Posted on 20180713 (6 Comments) 
 re(2): solution (part 1 only) by Charlie (20180714 15:53:58) 
 The internet re part 2 (spoiler) by Charlie (20180714 15:42:49) 
 re: solution (part 1 only) by Charlie (20180714 15:35:08) 
Under Aloof prime (in Numbers) Posted on 20180712 (2 Comments) 
 discussion and solution by Charlie (20180712 11:06:25) 
Under Probability of being coprime (in Probability) Posted on 20180711 (4 Comments) 
 re: computer approximation (vs researched solution) by Charlie (20180711 11:56:00) 
 computer approximation by Charlie (20180711 10:59:31) 
Under Sliders II (in Word Problems) Posted on 20180710 (5 Comments) 
 re: answers by Charlie (20180710 10:57:39) 
Under Earth, The Scofflaw Planet (in Science) Posted on 20180709 (9 Comments) 
 re: again, not the solution by Charlie (20180709 21:38:18) 
 solution by Charlie (20180709 19:39:10) 
Under Sum of 4 squares (in Numbers) Posted on 20180708 (4 Comments) 
 computer finding (no proof of completeness) by Charlie (20180708 15:55:49) 
Under Some prime sequences (in Numbers) Posted on 20180704 (11 Comments) 
 re(2): The sequence by Charlie (20180705 20:48:46) 
 re: No Subject by Charlie (20180705 14:50:11) 
 re(2): The sequence by Charlie (20180705 11:30:20) 
 re: The sequence by Charlie (20180705 10:58:19) 
 Basic language version by Charlie (20180704 12:48:06) 
Under Who's on the second base? (in Numbers) Posted on 20180701 (1 Comments) 
 solution by Charlie (20180701 10:08:08) 
Under Astronomy: Binoculars, for fun and profit (in Science) Posted on 20180629 (10 Comments) 
 re(2): Hint by Charlie (20180705 19:58:20) 
 re: Hint by Charlie (20180705 15:55:18) 
 How to... by Charlie (20180629 13:40:52) 
Under 7 come zero (in Probability) Posted on 20180628 (5 Comments) 
 solution by Charlie (20180628 12:26:17) 
Under Save my spa! (in Science) Posted on 20180627 (4 Comments) 
 spoiler if I did the math right by Charlie (20180627 12:03:59) 
Under These are EZ (in Geometry) Posted on 20180625 (6 Comments) 
 re: More on Procedures by Charlie (20180626 20:13:56) 
 re: Procedure Question by Charlie (20180626 15:25:22) 
 solution by Charlie (20180625 10:54:49) 
Under Sum of reciprocals (in Just Math) Posted on 20180622 (2 Comments) 
 computer solution and research by Charlie (20180622 13:10:49) 
Under 3 cubes (in Numbers) Posted on 20180621 (2 Comments) 
 re: computer lists (spoilers for part a)  continued, with mixed signs by Charlie (20180621 14:44:30) 
 computer lists (spoilers for part a) by Charlie (20180621 14:41:59) 
Under Nonzero integers (in Just Math) Posted on 20180620 (3 Comments) 
 re: this seems the solution by Charlie (20180620 13:36:31) 
 this seems the solution by Charlie (20180620 13:22:51) 
Under Space guys (in Just Math) Posted on 20180619 (2 Comments) 
 tabular approach (spoiler) by Charlie (20180619 11:23:38) 
Under Counting ones (in Just Math) Posted on 20180618 (2 Comments) 
 analytic solution, with computer verification by Charlie (20180618 11:13:43) 
Under Square Divisiblity (in Numbers) Posted on 20180617 (4 Comments) 
 thoughts by Charlie (20180617 18:23:05) 
Under Play until you win (in Probability) Posted on 20180615 (1 Comments) 
 Unsatisfying computer solution (spoiler) by Charlie (20180615 12:08:54) 
Under Looking for a square result (in Just Math) Posted on 20180614 (18 Comments) 
 re: No Subject by Charlie (20180615 12:17:21) 
 re(3): computer solution by Charlie (20180615 10:29:47) 
 re(3): computer solution by Charlie (20180615 10:11:06) 
 re: computer solution by Charlie (20180615 07:31:40) 
 computer solution by Charlie (20180615 07:25:52) 
Under Cubes of couples (in Numbers) Posted on 20180612 (2 Comments) 
 computer solution by Charlie (20180612 16:08:02) 
Under Define number n in n letters (in General) Posted on 20180608 (4 Comments) 
 re: very limited computer finding by Charlie (20180608 21:50:16) 
 very limited computer finding by Charlie (20180608 21:21:36) 
Under a NEWS puzzle (in Just Math) Posted on 20180607 (1 Comments) 
 computer solution by Charlie (20180607 16:43:27) 
Under Palindrome in 4 steps (in Numbers) Posted on 20180606 (4 Comments) 
 re(2): computer findings (spoilers) by Charlie (20180606 15:48:04) 
 computer findings (spoilers) by Charlie (20180606 12:31:27) 
Under Optimal result (in Just Math) Posted on 20180604 (11 Comments) 
 hmmm... (spoiler) by Charlie (20180604 10:48:14) 
Under Using its own digits (in Numbers) Posted on 20180531 (9 Comments) 
 re(5): beyond base 10, continued by Charlie (20180601 10:48:21) 
 re(4): beyond base 10, analytical solution....TBC by Charlie (20180601 10:43:51) 
 re(3): beyond base 10, analytical solution....TBC by Charlie (20180601 10:12:25) 
 re(2): beyond base 10, analytical solution....TBC by Charlie (20180601 08:45:40) 
 computer solution by Charlie (20180531 14:31:30) 
Under Thinking octal (in Numbers) Posted on 20180530 (2 Comments) 
 VB program by Charlie (20180530 10:25:17) 
Under What is the value of D? (in Just Math) Posted on 20180527 (1 Comments) 
 computer to narrow the problem, then analysis of what's left by Charlie (20180527 15:08:52) 
Under Ascending order (in Numbers) Posted on 20180526 (1 Comments) 
 computer solution (spoiler) by Charlie (20180526 13:00:57) 
Under How many drinks do you need? (in Numbers) Posted on 20180525 (1 Comments) 
 computer solution by Charlie (20180525 16:03:52) 
Under 495 and 6174 (in Numbers) Posted on 20180524 (3 Comments) 
 re(2): research and exploration (spoiler) by Charlie (20180525 16:18:02) 
 research and exploration (spoiler) by Charlie (20180524 13:33:00) 
Under Selfnumbers and generators (in Numbers) Posted on 20180523 (8 Comments) 
 re(2): a. analytic, b. computer, solutions (spoilers for a and b) by Charlie (20180523 16:56:22) 
 a. analytic, b. computer, solutions (spoilers for a and b) by Charlie (20180523 13:47:34) 
Under Another True Story (in General) Posted on 20180522 (2 Comments) 
 this must be how by Charlie (20180522 09:49:08) 
Under High and low (in Word Problems) Posted on 20180521 (3 Comments) 
 computer solution by Charlie (20180521 10:35:42) 
Under Will take some time ?? (in Numbers) Posted on 20180518 (5 Comments) 
 re(3): computer solution by Charlie (20180520 20:44:06) 
 re: computer solution by Charlie (20180519 11:51:47) 
 computer solution by Charlie (20180518 13:41:56) 
Under Just 3 digits (in Sequences) Posted on 20180517 (4 Comments) 
 re: interesting aside by Charlie (20180518 13:58:44) 
 interesting aside by Charlie (20180518 10:18:57) 
 computer solution by Charlie (20180517 12:32:17) 
Under From primes to palindromes (in Numbers) Posted on 20180516 (4 Comments) 
 computer solution by Charlie (20180516 13:37:46) 
 re: OEIS crossreferencing by Charlie (20180516 13:35:57) 
Under What's Seven Got To Do With It? (in Sequences) Posted on 20180514 (2 Comments) 
 computer extension by Charlie (20180514 10:33:42) 
Under How about 138? (in Sequences) Posted on 20180510 (4 Comments) 
 computer solution by Charlie (20180510 14:28:13) 
Under Strongly related (in Just Math) Posted on 20180505 (1 Comments) 
 computer solution by Charlie (20180506 18:18:45) 
Under Some of these and some of those (in Numbers) Posted on 20180430 (2 Comments) 
 Using the table function of a graphing calculator. by Charlie (20180430 12:09:09) 
Under It is not 42 (in Numbers) Posted on 20180429 (1 Comments) 
 computer solution by Charlie (20180429 10:42:25) 
Under Two random points (in Probability) Posted on 20180426 (10 Comments) 
 re: another way by Charlie (20180427 12:19:23) 
 re(3): There must be a reason for the D3 rating. by Charlie (20180426 12:04:02) 
 re: There must be a reason for the D3 rating. by Charlie (20180426 10:42:51) 
 There must be a reason for the D3 rating. by Charlie (20180426 10:16:46) 
Under XFL (in General) Posted on 20180425 (3 Comments) 
 solution with games spelled out by Charlie (20180425 11:38:24) 
Under When polynomial and trigo unite! (in Calculus) Posted on 20180424 (1 Comments) 
 solution by Charlie (20180424 12:52:29) 
Under Partitura (in Numbers) Posted on 20180421 (2 Comments) 
 computer solution by Charlie (20180421 15:55:57) 
Under An almost regular tetrahedron (in Geometry) Posted on 20180420 (2 Comments) 
 re: solution  What was I thinking? by Charlie (20180421 17:19:13) 
 solution by Charlie (20180420 13:18:39) 
Under A primer in Malaga (in Numbers) Posted on 20180419 (1 Comments) 
 computer solution by Charlie (20180419 14:52:49) 
Under The Devil 30gon (in Geometry) Posted on 20180417 (3 Comments) 
 computeraided solution by Charlie (20180417 11:38:15) 
Under Debugging a system (in Just Math) Posted on 20180416 (5 Comments) 
 re(2): Debugged! (spoiler) by Charlie (20180416 21:11:39) 
Under Find a Few Functions (in Calculus) Posted on 20180415 (3 Comments) 
 success for part 1; not so much for part 2 by Charlie (20180415 12:33:53) 
Under A pandigital set (in Numbers) Posted on 20180414 (5 Comments) 
 computer solution by Charlie (20180414 14:04:06) 
Under Prime stars (in Just Math) Posted on 20180413 (2 Comments) 
 computer solution by Charlie (20180413 12:05:10) 
Under Angle in an Equilateral Pentagon (in Geometry) Posted on 20180412 (2 Comments) 
 the trig solution by Charlie (20180412 10:55:33) 
Under On the road again (in Numbers) Posted on 20180410 (5 Comments) 
 re: computer lists possibilities; logic narrows down to actual answers by Charlie (20180410 10:31:44) 
 computer lists possibilities; logic narrows down to actual answers by Charlie (20180410 10:10:15) 
Under The royal sisters (in Just Math) Posted on 20180409 (3 Comments) 
 computer assisted solution by Charlie (20180409 10:40:40) 
Under Simple recursion (in Sequences) Posted on 20180408 (1 Comments) 
 some thoughts by Charlie (20180408 11:48:35) 
Under Squares built from leftovers (in Numbers) Posted on 20180405 (4 Comments) 
 re: Solution by cheating by Charlie (20180405 14:51:50) 
 computer solution by Charlie (20180405 12:27:33) 
Under Parenthetical Integer (in Numbers) Posted on 20180404 (1 Comments) 
 computer solution with explanation that could have been used as an analytic solution (spoiler) by Charlie (20180404 10:25:35) 
Under Cube Decomposition (in Geometry) Posted on 20180402 (4 Comments) 
 solution with explanation by Charlie (20180402 14:30:41) 
Under Better late than never ...HNY (in Just Math) Posted on 20180401 (3 Comments) 
 The equation and the question. by Charlie (20180401 19:33:29) 
Under Pascal Determinant (in Just Math) Posted on 20180331 (3 Comments) 
 re: computer assisted solution by Charlie (20180411 12:34:22) 
 computer assisted solution by Charlie (20180331 14:28:37) 
Under Comb(k,2) (in Numbers) Posted on 20180329 (4 Comments) 
 solutions through k=1,000,000 by Charlie (20180329 10:11:46) 
Under One square implies many (in Sequences) Posted on 20180328 (6 Comments) 
 BTW... by Charlie (20180328 10:25:33) 
 solution assuming all members of the series are integers by Charlie (20180328 10:14:13) 
Under Four singers (in Tricks) Posted on 20180326 (3 Comments) 
 Is it a "Trick" or not? (spoiler) by Charlie (20180326 10:41:59) 
Under Not enough information! (in Science) Posted on 20180323 (7 Comments) 
 considering the simultaneity issue by Charlie (20180324 13:11:48) 
 proposed solution by Charlie (20180323 11:51:25) 
Under She has moved (in Numbers) Posted on 20180322 (2 Comments) 
 How I went about it. by Charlie (20180322 10:35:55) 
Under All in the USA (in Numbers) Posted on 20180320 (2 Comments) 
 computer solution by Charlie (20180320 15:05:39) 
Under six and thirteen (in Numbers) Posted on 20180315 (8 Comments) 
 computer solution by Charlie (20180315 11:55:36) 
Under A Really Weird Math Problem (in Numbers) Posted on 20180312 (6 Comments) 
 re: Spoiler (I think . . .) by Charlie (20180312 14:10:03) 
Under Another Dudeney problem (in Numbers) Posted on 20180309 (2 Comments) 
 computer solution by Charlie (20180309 12:21:01) 
Under Summing the factors (in Numbers) Posted on 20180308 (2 Comments) 
 a solution by Charlie (20180308 12:24:20) 
Under A palindromic equation (in Numbers) Posted on 20180304 (3 Comments) 
 a computer aside (no spoiler) by Charlie (20180304 11:44:38) 
Under The Truman Show (in Geometry) Posted on 20180302 (4 Comments) 
 solution with error analysis by Charlie (20180302 10:32:54) 
Under 15=5*3 (in Sequences) Posted on 20180301 (1 Comments) 
 computer solution by Charlie (20180301 15:40:50) 
Under Trailing zeros (in Numbers) Posted on 20180228 (1 Comments) 
 analytic solution with computer verification by Charlie (20180228 10:35:55) 
Under Square products (in Just Math) Posted on 20180227 (3 Comments) 
 computer exploration by Charlie (20180227 14:38:46) 
Under 4 digit number derived from a single digit (in Numbers) Posted on 20180226 (3 Comments) 
 solution by Charlie (20180226 12:15:47) 
Under Sum of subfactorials (in Numbers) Posted on 20180225 (2 Comments) 
 computer solution by Charlie (20180225 11:54:05) 
Under Completing a triplet (in Numbers) Posted on 20180224 (5 Comments) 
 computer findings by Charlie (20180224 14:05:52) 
Under A sixth power in many ways (in Numbers) Posted on 20180222 (1 Comments) 
 solution by Charlie (20180222 11:12:10) 
Under A state of a State (in General) Posted on 20180219 (8 Comments) 
 re: no answer by Charlie (20180220 10:58:42) 
 re: on first sight by Charlie (20180219 13:54:08) 
Under Strictly nonpalindromic numbers (in Numbers) Posted on 20180218 (3 Comments) 
 computer exploration and solution to 3.5 parts by Charlie (20180218 12:07:57) 
Under Double Secant (in Geometry) Posted on 20180215 (3 Comments) 
 not a mathematical proof, but beyond a reasonable doubt by Charlie (20180215 09:29:37) 
Under Four fours (in Numbers) Posted on 20180214 (6 Comments) 
 re: minor tweak to three fours program; 7 goal numbers remain unsolved by Charlie (20180214 23:02:47) 
 minor tweak to three fours program; 7 goal numbers remain unsolved by Charlie (20180214 10:35:12) 
Under Using nine positive digits (in Numbers) Posted on 20180211 (3 Comments) 
 solution in keeping with the title by Charlie (20180211 14:38:55) 
Under En francais seulement ! (in Numbers) Posted on 20180209 (3 Comments) 
 ummm.... by Charlie (20180209 13:15:47) 
Under A couple of squares (in Numbers) Posted on 20180202 (9 Comments) 
 re(2): solution (spoiler) by Charlie (20180203 07:58:35) 
 solution (spoiler) by Charlie (20180202 13:18:35) 
Under Cute numbers (in Numbers) Posted on 20180201 (4 Comments) 
 re: Also by Charlie (20180202 13:29:18) 
 solution by Charlie (20180201 11:24:36) 
Under 113 together (in Just Math) Posted on 20180130 (4 Comments) 
 the algebra and a variation by Charlie (20180130 10:20:29) 
Under Quite a pair! (in Numbers) Posted on 20180126 (2 Comments) 
 computer solution by Charlie (20180126 14:13:29) 
Under Quadrilateral fill in the blank (in Shapes) Posted on 20180125 (2 Comments) 
 playing with GSP  no proof by Charlie (20180125 10:31:54) 
Under Starting the Scrabble Game (in Probability) Posted on 20180124 (8 Comments) 
 re(3): No Subject by Charlie (20180124 21:47:57) 
 re: No Subject by Charlie (20180124 15:15:51) 
Under Champagnat numbers (in Just Math) Posted on 20180123 (2 Comments) 
 a proof by Charlie (20180123 15:00:21) 
Under The Sleeping Beauty problem (in Probability) Posted on 20180122 (4 Comments) 
 solution by Charlie (20180122 12:29:25) 
Under Quite a coincidence (in Just Math) Posted on 20180119 (6 Comments) 
 proposed solution by Charlie (20180119 11:41:55) 
Under A set of subsets (in Just Math) Posted on 20180117 (2 Comments) 
 computer solution by Charlie (20180117 11:37:00) 
Under Fair slices (in Geometry) Posted on 20180116 (8 Comments) 
 re: To avoid kids figthting by Charlie (20180117 11:42:03) 
Under Get even (in Numbers) Posted on 20180115 (3 Comments) 
 solution transcribed from pencil and paper, with explanation added by Charlie (20180115 10:01:01) 
Under Funny way to divide by seven (in Numbers) Posted on 20180112 (3 Comments) 
 computer finding of numbers that can be divided that way by Charlie (20180112 19:33:39) 
Under 15 letter 'words' (in Just Math) Posted on 20180111 (1 Comments) 
 2 algorithms same answercomputer assisted (spoiler) by Charlie (20180111 16:21:19) 
Under Discounting one (in Numbers) Posted on 20180110 (9 Comments) 
 re: if you allow negatives by Charlie (20180110 20:32:41) 
 re(3): The only way to do it. Confused by Charlie (20180110 15:56:45) 
 re(2): The only way to do it. Confused by Charlie (20180110 15:51:32) 
 The only way to do it. (computer solution included) by Charlie (20180110 14:04:44) 
Under A meeting point (in Just Math) Posted on 20180107 (2 Comments) 
 solution by Charlie (20180107 12:24:25) 
Under Overheard in Manitoba (in Numbers) Posted on 20180106 (6 Comments) 
 re(2): An aside, beyond the solution by Charlie (20180107 08:27:51) 
 An aside, beyond the solution by Charlie (20180106 16:02:12) 
Under Simple fractions (in Just Math) Posted on 20180103 (3 Comments) 
 Treating as probabilities by Charlie (20180103 15:54:38) 
Under 5digit number (in Just Math) Posted on 20180102 (2 Comments) 
 assuming beforehand that the title is meaningful by Charlie (20180102 13:31:46) 
Under Three triplets (in Numbers) Posted on 20171230 (6 Comments) 
 re(2): computer solution finds one more by Charlie (20171231 08:04:12) 
 computer solution finds one more by Charlie (20171230 15:37:48) 
Under Pandigital and divisible (in Numbers) Posted on 20171229 (3 Comments) 
 computer solution (spoiler) by Charlie (20171229 11:15:53) 
Under A prime nonuplet (in Numbers) Posted on 20171227 (4 Comments) 
 computer solution (spoiler) by Charlie (20171227 12:47:03) 
Under Expanding the railroad line (in Just Math) Posted on 20171226 (2 Comments) 
 computer solutions by Charlie (20171226 13:51:49) 
Under The Young Girl's Age (in Just Math) Posted on 20171225 (2 Comments) 
 computer solution (spoiler) by Charlie (20171225 14:37:12) 
Under Persistence I (in Numbers) Posted on 20171224 (3 Comments) 
 some analysis; some computation solution except for b) in base 3. by Charlie (20171224 14:13:06) 
Under Do not say ONE (in Games) Posted on 20171223 (3 Comments) 
 Researched answer by Charlie (20171223 16:26:49) 
Under Magic circle revisited (in Numbers) Posted on 20171222 (5 Comments) 
 Computer exploration and OEIS identification. by Charlie (20171222 13:04:22) 
Under One problem  many ways to solve... (in Numbers) Posted on 20171221 (6 Comments) 
 My ways by Charlie (20171221 11:31:11) 
Under A true story (in Numbers) Posted on 20171220 (6 Comments) 
 a start by Charlie (20171220 16:30:13) 
Under East Pole, West Pole. (in General) Posted on 20171219 (2 Comments) 
 My thoughts on the subject by Charlie (20171219 10:31:31) 
Under Given one, get the other three (in Numbers) Posted on 20171218 (2 Comments) 
 solution by Charlie (20171218 14:09:02) 
Under Fibo's zeroes repeated (in Numbers) Posted on 20171214 (1 Comments) 
 computeraided solution by Charlie (20171214 11:04:56) 
Under LOP (in Geometry) Posted on 20171213 (7 Comments) 
 re(2): GSP exploration by Charlie (20171214 10:16:46) 
 re(2): GSP exploration by Charlie (20171213 15:24:45) 
 re: GSP exploration by Charlie (20171213 15:02:18) 
 GSP exploration by Charlie (20171213 12:12:07) 
Under Perform and explain (in Tricks) Posted on 20171212 (11 Comments) 
 re(2): Computer resultsbut but but... by Charlie (20171213 07:48:50) 
 re: Answer by Charlie (20171212 11:30:34) 
 re: Computer results  proof of sorts by Charlie (20171212 11:27:25) 
 Computer results by Charlie (20171212 11:01:33) 
Under Enigma (in Logic) Posted on 20171211 (2 Comments) 
 re: Just kidding (spoiler) by Charlie (20171211 11:06:33) 
Under Verify and prove (in Sequences) Posted on 20171210 (5 Comments) 
 re: computer verification no proof ... or, come to think about it ... by Charlie (20171210 10:32:30) 
 computer verification no proof by Charlie (20171210 10:26:50) 
Under All, except two (in Sequences) Posted on 20171209 (4 Comments) 
 re: ERRATIC SOLUTION (spoiler) by Charlie (20171209 17:43:57) 
Under Spelling bee results (in Just Math) Posted on 20171208 (1 Comments) 
 computer solution with most of the bonuses by Charlie (20171208 15:24:50) 
Under Three fours (in Numbers) Posted on 20171206 (3 Comments) 
 re(2): computer solutions (spoilers) by Charlie (20171207 09:05:40) 
 computer solutions (spoilers) by Charlie (20171206 19:34:47) 
Under Just name the date (in General) Posted on 20171205 (2 Comments) 
 solution by Charlie (20171205 10:03:01) 
Under Just 4 different digits (in Numbers) Posted on 20171203 (10 Comments) 
 re: @ Charlie: Answers for the revised puzzle: by Charlie (20171203 19:29:13) 
 just 3 different digits by Charlie (20171203 12:03:10) 
 re(2): Too many  here's some by Charlie (20171203 11:45:15) 
 re: computer solution to the puzzle as is continued by Charlie (20171203 11:31:35) 
 computer solution to the puzzle as is by Charlie (20171203 11:30:08) 
Under One ninth of a pandigital (in Numbers) Posted on 20171202 (1 Comments) 
 computer solution by Charlie (20171202 14:44:27) 
Under A square pairing (in Numbers) Posted on 20171129 (1 Comments) 
 computer solution by Charlie (20171129 13:31:55) 
Under Dice stacking (in Games) Posted on 20171128 (4 Comments) 
 re(3): solution (spoiler) by Charlie (20171128 13:31:14) 
 re: solution (spoiler) by Charlie (20171128 10:00:11) 
 solution (spoiler) by Charlie (20171128 09:53:21) 
Under Quickie XI (in Numbers) Posted on 20171127 (2 Comments) 
 solution by Charlie (20171127 13:06:02) 
Under A special pandigital (in Numbers) Posted on 20171126 (1 Comments) 
 computer solution by Charlie (20171126 16:30:12) 
Under Unique decimal primes (in Algorithms) Posted on 20171124 (1 Comments) 
 computer exploration by Charlie (20171124 14:22:49) 
Under A pandigital sum (in Numbers) Posted on 20171121 (1 Comments) 
 computer solution (spoiler) by Charlie (20171121 10:32:45) 
Under What is .... ...... (in Numbers) Posted on 20171119 (1 Comments) 
 computer solution by Charlie (20171202 14:55:23) 
Under Ulam numbers II (in Numbers) Posted on 20171118 (1 Comments) 
 computer "solution" by Charlie (20171118 16:10:30) 
Under Pythagorean areas (in Numbers) Posted on 20171117 (7 Comments) 
 re: computer solution after fixing bug by Charlie (20171119 09:48:06) 
 computer solution after fixing bug by Charlie (20171119 08:44:36) 
 Either .... by Charlie (20171117 14:26:43) 
Under Where Did You Start? (in Just Math) Posted on 20171116 (3 Comments) 
 tried analytic but had to resort to program (spoiler) by Charlie (20171116 15:19:18) 
Under Your creativity challenged (in Riddles) Posted on 20171115 (6 Comments) 
 I'm not sure why that posted twice by Charlie (20171115 10:15:28) 
 two ideas by Charlie (20171115 10:13:32) 
 two ideas by Charlie (20171115 10:13:32) 
Under Fun primes (in Numbers) Posted on 20171114 (2 Comments) 
 computer solution by Charlie (20171114 14:08:09) 
Under Making a 10 (in Numbers) Posted on 20171113 (4 Comments) 
 re: 02 01 2387 (Spoiler) by Charlie (20171113 14:46:41) 
Under Beast number as a substring (in Numbers) Posted on 20171111 (2 Comments) 
 computer investigation including a solution by Charlie (20171111 12:02:15) 
Under Talking BIG (in Numbers) Posted on 20171110 (3 Comments) 
 solution by Charlie (20171110 11:02:25) 
Under Reverse Engineering I (in Cryptography) Posted on 20171109 (2 Comments) 
 answer by Charlie (20171109 13:25:23) 
Under One digit answer (in Numbers) Posted on 20171108 (3 Comments) 
 re: Solution by Charlie (20171108 15:49:59) 
Under Attributed to Lewis Carroll (in Probability) Posted on 20171107 (4 Comments) 
 2 scenarios: with and without replacement by Charlie (20171107 14:19:37) 
Under Rectangle in a circle (in Just Math) Posted on 20171107 (4 Comments) 
 GSP and calculus solution by Charlie (20171107 10:07:58) 
Under No big digits involved (in Numbers) Posted on 20171106 (2 Comments) 
 solution by Charlie (20171106 18:04:58) 
Under Searching for the minimal repunit (in Numbers) Posted on 20171106 (1 Comments) 
 computer solution by Charlie (20171106 12:38:05) 
Under Square triplets (in Just Math) Posted on 20171105 (2 Comments) 
 computer solution by Charlie (20171105 14:14:00) 
Under Truth or consequences (in Just Math) Posted on 20171102 (2 Comments) 
 solution by Charlie (20171102 17:51:44) 
Under Counting appearances (in Numbers) Posted on 20171101 (1 Comments) 
 solution by Charlie (20171101 16:09:16) 
Under Mutual dependence (in Numbers) Posted on 20171101 (3 Comments) 
 answer by Charlie (20171101 10:55:23) 
Under 2 ways to prove it (in Just Math) Posted on 20171031 (2 Comments) 
 my offered proofs... are they really the same by Charlie (20171031 13:58:26) 
Under Create 2 congruent triangles (in Geometry) Posted on 20171031 (4 Comments) 
 re: Solution (spoiler) by Charlie (20171031 10:30:21) 
 solution by Charlie (20171031 10:23:52) 
Under Letters in a Box (in Logic) Posted on 20171030 (2 Comments) 
 My apologies re: official solution by Charlie (20171116 18:47:36) 
Under A common feature (in Numbers) Posted on 20171029 (1 Comments) 
 researched solution by Charlie (20171029 11:35:41) 
Under Two SPECIAL PARTITIONS (in Numbers) Posted on 20171028 (4 Comments) 
 oh, and the program... by Charlie (20171028 11:22:23) 
 re: computer solution by Charlie (20171028 11:20:37) 
 computer solution by Charlie (20171028 11:17:31) 
Under Leaving the least (the most) (in Numbers) Posted on 20171027 (2 Comments) 
 computer solutions by Charlie (20171027 10:40:23) 
Under It is not SIX (in Numbers) Posted on 20171026 (4 Comments) 
 computer solution (spoiler) by Charlie (20171026 10:42:39) 
Under Obtuse angle? (in Probability) Posted on 20171025 (2 Comments) 
 solutions by Charlie (20171025 15:02:17) 
Under One word  created by two others (in Word Problems) Posted on 20171025 (3 Comments) 
 re: No Subject by Charlie (20171025 10:41:00) 
Under 3 multiples of cubes (in Numbers) Posted on 20171024 (1 Comments) 
 computer solution by Charlie (20171024 11:06:36) 
Under Urban architecture (in Word Problems) Posted on 20171023 (1 Comments) 
 computer findings by Charlie (20171023 15:52:28) 
Under 31 or more (in Games) Posted on 20171021 (5 Comments) 
 re: computer aided solution by Charlie (20171021 17:16:49) 
 computer aided solution by Charlie (20171021 16:59:55) 
Under 3 lowest score words (in Word Problems) Posted on 20171020 (3 Comments) 
 computer solution by Charlie (20171020 16:14:49) 
Under Does it continue? An original. (in Numbers) Posted on 20171020 (7 Comments) 
 re(2): computer solution by Charlie (20171020 14:21:05) 
 computer solution by Charlie (20171020 11:04:42) 
Under The Odds Must Be Crazy (in Probability) Posted on 20171019 (4 Comments) 
 re(2): My take on it by Charlie (20171019 22:37:36) 
 My take on it by Charlie (20171019 13:43:53) 
Under √22 (in Numbers) Posted on 20171018 (3 Comments) 
 short general proof by Charlie (20171018 15:28:53) 
Under SUM = PR0DUCT (in Numbers) Posted on 20171018 (3 Comments) 
 computer solution by Charlie (20171018 10:52:00) 
Under Alfey revava ... (in General) Posted on 20171017 (3 Comments) 
 re: computer solution by Charlie (20171017 16:25:34) 
 computer solution by Charlie (20171017 16:16:32) 
Under 9 cubes (in Numbers) Posted on 20171017 (1 Comments) 
 computer solution by Charlie (20171017 12:51:10) 
Under He, me, and you (in Word Problems) Posted on 20171016 (2 Comments) 
 computer aided part 1 by Charlie (20171016 18:32:37) 
Under Twothree integers (in Numbers) Posted on 20171015 (6 Comments) 
 re: Analytic Solution by Charlie (20171015 21:16:32) 
 re(2): computeraided solution  another number continued by Charlie (20171015 17:01:30) 
 re: computeraided solution  another number by Charlie (20171015 16:57:59) 
 computeraided solution by Charlie (20171015 16:54:45) 
Under What's out? (in Word Problems) Posted on 20171013 (3 Comments) 
 re: anagrammatic spoilers by Charlie (20171013 10:27:05) 
Under Equal Power Sum Sets (in Numbers) Posted on 20171011 (1 Comments) 
 computer solution by Charlie (20171011 15:13:30) 
Under Somewhere in the USA (in Word Problems) Posted on 20171010 (6 Comments) 
 Computer search finds other geographic entities by Charlie (20171010 13:35:40) 
Under Does it continue? 10: Alternate differences (in Numbers) Posted on 20171007 (2 Comments) 
 computer exploration by Charlie (20171007 22:22:53) 
Under Squeeze in (in Word Problems) Posted on 20171005 (4 Comments) 
 computer aided solution by Charlie (20171005 14:43:54) 
Under In Europe (in General) Posted on 20171004 (6 Comments) 
 re(2): the equation part by Charlie (20171004 13:35:08) 
 the equation part by Charlie (20171004 10:26:43) 
Under A set of ages (in Just Math) Posted on 20171002 (1 Comments) 
 computer aided solution by Charlie (20171002 11:07:08) 
Under Oddly even numbers (in Numbers) Posted on 20171001 (1 Comments) 
 computer solution by Charlie (20171001 15:48:18) 
Under Does it continue? 8: Prime together (in Numbers) Posted on 20170930 (1 Comments) 
 computer solution by Charlie (20170930 15:52:22) 
Under A scrambled BEDLAM (in Just Math) Posted on 20170929 (2 Comments) 
 with computer assistance by Charlie (20170929 10:42:53) 
Under Does it continue? 7: Partial sums again (in Numbers) Posted on 20170928 (1 Comments) 
 computer exploration by Charlie (20170928 15:15:27) 
Under Toasting the eternal (in Just Math) Posted on 20170927 (1 Comments) 
 computer solution (spoilers) by Charlie (20170927 11:49:50) 
Under Does it continue? 6: Partial sums (in Numbers) Posted on 20170925 (7 Comments) 
 answers by Charlie (20170925 12:32:44) 
Under Does it continue? 5: powers of 2 (in Numbers) Posted on 20170924 (6 Comments) 
 computer findings by Charlie (20170924 16:53:43) 
Under 3 by 3 by 5 (in Word Problems) Posted on 20170922 (6 Comments) 
 computer finds few words, apparently not all compatible by Charlie (20170922 12:17:16) 
 only two words found  no computer program used by Charlie (20170922 10:38:15) 
Under Does it continue? 4: Euclid's next prime (in Numbers) Posted on 20170921 (3 Comments) 
 Initial thought and computer exploration by Charlie (20170921 13:05:22) 
Under Does it continue? 3: Growing table of primes (in Numbers) Posted on 20170919 (3 Comments) 
 first thought and computer vindication by Charlie (20170919 10:54:29) 
Under Reverse Engineering (in General) Posted on 20170915 (3 Comments) 
 researched answer by Charlie (20170915 10:45:16) 
Under Does it continue? 1: Chord regions (in Sequences) Posted on 20170913 (9 Comments) 
 re(2): Huh?......ehe by Charlie (20170913 10:44:18) 
Under MMMMMM Donut (in Just Math) Posted on 20170911 (4 Comments) 
 solution by Charlie (20170911 12:16:35) 
Under Product of 100 factorials (in Just Math) Posted on 20170907 (8 Comments) 
 bringing my original table up to n=100 by Charlie (20170908 11:05:02) 
 miscellany by Charlie (20170908 08:51:28) 
 when it works  computer exploration by Charlie (20170907 10:53:24) 
Under Who began with 50 cents? (in Just Math) Posted on 20170906 (3 Comments) 
 solution by Charlie (20170906 13:13:58) 
Under Getting closer to your pie (in Numbers) Posted on 20170904 (10 Comments) 
 re(2): A little less obvious, for part c by Charlie (20170905 07:40:34) 
 A little less obvious, for part c by Charlie (20170904 10:36:41) 
Under Two sums of digits (in Just Math) Posted on 20170902 (5 Comments) 
 computer solution (spoilers) by Charlie (20170902 12:54:29) 
Under Teatime cakes (in Just Math) Posted on 20170901 (2 Comments) 
 of course there's the computer way by Charlie (20170901 13:53:37) 
Under Are we there yet? (in Probability) Posted on 20170830 (5 Comments) 
 re: Part 3 by Charlie (20170831 15:40:15) 
 parts 1 & 2 only; outline of 3 by Charlie (20170830 12:28:14) 
Under Triangle in a triangle (in Shapes) Posted on 20170828 (4 Comments) 
 answer by Charlie (20170828 12:17:22) 
Under Strobogrammatic to pandigital (in Numbers) Posted on 20170826 (4 Comments) 
 computer solution by Charlie (20170826 16:31:15) 
Under Leaving a maximal result (in Algorithms) Posted on 20170825 (3 Comments) 
 algorithm by Charlie (20170825 10:47:40) 
Under Next Numbers Please #9 (in Numbers) Posted on 20170823 (9 Comments) 
 re(5): When 12 appears by Charlie (20170829 09:54:43) 
 re(4): When 12 appears by Charlie (20170829 09:47:19) 
Under The trio (in Liars and Knights) Posted on 20170821 (1 Comments) 
 solution by Charlie (20170821 12:23:07) 
Under A repunit product (in Word Problems) Posted on 20170819 (4 Comments) 
 solution by Charlie (20170819 22:04:28) 
Under Marbles in boxes (in Algorithms) Posted on 20170816 (5 Comments) 
 solution by Charlie (20170816 11:41:37) 
Under Divisibility in a sequence (in Numbers) Posted on 20170812 (2 Comments) 
 Existence proof (lowest pair requiring 79) by Charlie (20170812 12:36:27) 
 proof (but not a proof that this is the lowest achievable) by Charlie (20170812 11:42:49) 
Under Bob and Alice make a poor choice (in Numbers) Posted on 20170811 (7 Comments) 
 re(2): solution (spoiler)  precision check by Charlie (20170811 14:29:42) 
 solution (spoiler) by Charlie (20170811 12:33:55) 
Under Straight or rotated (in Numbers) Posted on 20170810 (3 Comments) 
 program and solution (spoilers) by Charlie (20170810 11:16:22) 
Under Even (related) chances (in Probability) Posted on 20170809 (4 Comments) 
 solution (spoiler) by Charlie (20170809 11:34:37) 
Under Palindromic sum (in Just Math) Posted on 20170808 (3 Comments) 
 The "grunt work" left to the computer (spoiler) by Charlie (20170808 10:13:42) 
Under A text sans (in Word Problems) Posted on 20170807 (1 Comments) 
 He who hesitates is lost by Charlie (20170807 12:33:13) 
Under A unique Heronian triangle (in Geometry) Posted on 20170805 (6 Comments) 
 re(4): easy  spoiler by Charlie (20170806 07:58:16) 
Under Published in the thirties (in Famous Riddles) Posted on 20170803 (3 Comments) 
 An Isle of Joy (this is not Kansas any more) (spoiler) by Charlie (20170804 10:18:07) 
Under Think big (in Numbers) Posted on 20170803 (2 Comments) 
 Actually it could be done with VB by Charlie (20170803 11:08:15) 
 Think Big ... Think UBASIC (spoilers) by Charlie (20170803 10:31:36) 
Under Dec = xeh (in Numbers) Posted on 20170802 (5 Comments) 
 computer solutions. Don't know the commonality. by Charlie (20170802 14:16:35) 
Under Two parallelograms (in Geometry) Posted on 20170801 (3 Comments) 
 GSP by Charlie (20170801 10:11:30) 
Under Find this word (in Word Problems) Posted on 20170731 (7 Comments) 
 Funny... (spoilers) by Charlie (20170731 10:27:48) 
Under Add'em all ! (in Numbers) Posted on 20170727 (3 Comments) 
 computer solution (spoiler) by Charlie (20170727 10:30:14) 
Under Pandigitals Divided by 11 (in Numbers) Posted on 20170723 (4 Comments) 
 computer exploration by Charlie (20170723 10:39:48) 
Under Almostpandigital sets (in Numbers) Posted on 20170722 (1 Comments) 
 computer solution by Charlie (20170722 11:32:40) 
Under 2 bases (in Numbers) Posted on 20170721 (2 Comments) 
 computer solution (spoiler) by Charlie (20170721 10:47:40) 
Under 3 and 4digit numbers (in Numbers) Posted on 20170717 (6 Comments) 
 re(3): Just counting (spoiler) by Charlie (20170717 21:59:59) 
 re: Just counting (spoiler) by Charlie (20170717 13:53:40) 
Under Brazilian numbers (in Sequences) Posted on 20170715 (4 Comments) 
 Program had a bug  fixed it by Charlie (20170715 12:36:30) 
Under Unpainting Black (in Probability) Posted on 20170714 (5 Comments) 
 Details of the results by Charlie (20170715 11:29:16) 
 corrected program with revised answer by Charlie (20170714 22:20:16) 
 proposed computer solution by Charlie (20170714 17:05:24) 
 re: Preliminary work & thoughts by Charlie (20170714 10:13:03) 
Under Make the proof fullproof (in Word Problems) Posted on 20170711 (1 Comments) 
 first the computer,then a human correction by Charlie (20170711 10:48:27) 
Under Pythagorean H/L ratios (in Just Math) Posted on 20170708 (2 Comments) 
 computer solution by Charlie (20170708 11:49:48) 
Under Commutative Exponentiation (in Just Math) Posted on 20170707 (7 Comments) 
 exploration by Charlie (20170707 14:22:36) 
Under Just add 2 letters (in Word Problems) Posted on 20170706 (2 Comments) 
 computer findings (spoilers) by Charlie (20170706 09:53:55) 
Under 4 couples make a new word (in Word Problems) Posted on 20170704 (3 Comments) 
 The preceding subject should have been computer solution (spoiler) by Charlie (20170704 13:38:54) 
 No Subject by Charlie (20170704 13:37:01) 
Under Larger area / larger perimeter (in Numbers) Posted on 20170703 (3 Comments) 
 computer solution by Charlie (20170703 14:24:05) 
Under 38s and Bunches of 1s (in Numbers) Posted on 20170630 (7 Comments) 
 re(2): No proof but a pattern found by Charlie (20170630 10:14:56) 
 No proof but a pattern found by Charlie (20170630 09:04:10) 
Under Square Egyptians (in Numbers) Posted on 20170628 (1 Comments) 
 computer solution by Charlie (20170628 13:59:04) 
Under Words and hints (in General) Posted on 20170627 (1 Comments) 
 computer aided solution by Charlie (20170627 12:23:17) 
Under 2017 to start with (in Numbers) Posted on 20170623 (7 Comments) 
 re(2): computer results (spoilers) extended by Charlie (20170624 17:32:15) 
 program by Charlie (20170623 18:17:48) 
 computer results (spoilers) by Charlie (20170623 18:11:50) 
Under Letters to digits to letters (in Numbers) Posted on 20170622 (1 Comments) 
 computer solution by Charlie (20170622 10:34:01) 
Under Odd Egyptians (in Numbers) Posted on 20170621 (2 Comments) 
 re: Programming exercise (spoiler); 20/20 hindsight by Charlie (20170621 21:53:57) 
 Programming exercise (spoiler); 20/20 hindsight by Charlie (20170621 16:02:27) 
Under Make It Even Again (in Probability) Posted on 20170620 (4 Comments) 
 computer findings by Charlie (20170620 15:18:19) 
Under Punchline I (in Word Problems) Posted on 20170619 (3 Comments) 
 Part 2: Of course it was... by Charlie (20170619 14:37:35) 
Under Love story (in General) Posted on 20170617 (1 Comments) 
 computer solution by Charlie (20170617 18:49:13) 
Under Candy lover (in Liars and Knights) Posted on 20170612 (3 Comments) 
 solution by Charlie (20170612 13:56:57) 
Under A madness sequence (50 digits) (in Sequences) Posted on 20170611 (1 Comments) 
 solution by Charlie (20170611 15:58:14) 
Under Add another line (in General) Posted on 20170610 (6 Comments) 
 re(4): solution a typo by Charlie (20170611 14:52:18) 
 re(2): solution please correct spoiler by Charlie (20170611 10:04:49) 
 solution by Charlie (20170610 10:52:26) 
Under A powerful anagram (in Word Problems) Posted on 20170609 (2 Comments) 
 annotated computer listing by Charlie (20170609 18:24:36) 
Under 18 is not enough (in Sequences) Posted on 20170606 (2 Comments) 
 solution by Charlie (20170606 11:22:53) 
Under Red vs Black Cuts (in Numbers) Posted on 20170605 (8 Comments) 
 solution by Charlie (20170605 10:43:06) 
Under Ulam numbers (in Numbers) Posted on 20170603 (5 Comments) 
 re: The proof and the bonus by Charlie (20170603 14:34:24) 
 The proof and the bonus by Charlie (20170603 14:31:38) 
Under Memory Match Game (in Probability) Posted on 20170531 (9 Comments) 
 re: Question by Charlie (20170602 04:57:16) 
 re(3): computer discovery by Charlie (20170601 10:32:45) 
 re(2): computer discovery by Charlie (20170601 08:58:32) 
 computer discovery by Charlie (20170531 16:20:20) 
Under N dice (in Probability) Posted on 20170525 (3 Comments) 
 computer aided solution by Charlie (20170525 12:14:14) 
Under Higher Powers of Eleven (in Numbers) Posted on 20170524 (4 Comments) 
 re: Analytic Solution by Charlie (20170526 15:45:40) 
 computer solution by Charlie (20170524 11:32:24) 
Under Four balls (in Probability) Posted on 20170519 (22 Comments) 
 re(4): Who's right by Charlie (20170521 22:13:24) 
 re(2): Who's right by Charlie (20170521 16:37:54) 
 re: I agree with Brian by Charlie (20170519 23:01:06) 
 Solution by Charlie (20170519 11:00:34) 
Under Hands off! (in Weights and Scales) Posted on 20170516 (3 Comments) 
 Two ways of looking at it both agree by Charlie (20170516 10:36:39) 
Under Inder Taneja's discovery (in Numbers) Posted on 20170511 (4 Comments) 
 re: How far could the list be extended? by Charlie (20170512 13:50:00) 
 How far could the list be extended? by Charlie (20170512 13:17:11) 
 A step beyond Taneja's list by Charlie (20170511 22:42:29) 
 some computer results by Charlie (20170511 14:08:31) 
Under One more line (in Logic) Posted on 20170510 (5 Comments) 
 trivial solution?  or is this not the solution? by Charlie (20170510 10:32:24) 
Under The length of the belt (in Geometry) Posted on 20170509 (5 Comments) 
 solution by Charlie (20170509 09:35:50) 
Under No software allowed ! (in Numbers) Posted on 20170507 (6 Comments) 
 re(2): Solution by Charlie (20170507 16:26:51) 
Under All ten (in Numbers) Posted on 20170506 (1 Comments) 
 computer solution by Charlie (20170506 13:35:05) 
Under Sum and Difference II (in Numbers) Posted on 20170505 (1 Comments) 
 computer solution by Charlie (20170505 13:47:42) 
Under Pandigital + (in Probability) Posted on 20170503 (3 Comments) 
 Analytic solution with Computer calculations by Charlie (20170503 14:19:51) 
Under The smallest nonconformist (in Numbers) Posted on 20170502 (3 Comments) 
 with computer assistance by Charlie (20170502 12:47:47) 
Under A cent or more? (in Probability) Posted on 20170501 (2 Comments) 
 conditional nature of the problem (spoilers) by Charlie (20170501 08:56:54) 
Under Smallest pandifibo number (in Numbers) Posted on 20170429 (1 Comments) 
 UBASIC solution by Charlie (20170429 13:57:59) 
Under Prime with no prime digits (in Numbers) Posted on 20170425 (5 Comments) 
 BTW, why there are no 5's by Charlie (20170428 15:38:57) 
 re(2): solution via computer my remarks by Charlie (20170426 11:45:50) 
 solution via computer by Charlie (20170425 09:18:01) 
Under Liars can figure (in Liars and Knights) Posted on 20170424 (4 Comments) 
 re: I am between two answers (spoiler) by Charlie (20170424 10:31:01) 
Under Is it a conic? (in Geometry) Posted on 20170419 (7 Comments) 
 I guess my computer finding actually agrees, as do both others. by Charlie (20170419 20:36:36) 
 Computer findings  probably wrong, based on previous posts by Charlie (20170419 14:09:46) 
Under A factorial in seconds (in Numbers) Posted on 20170418 (6 Comments) 
 solution in under 200 seconds with calculator by Charlie (20170418 09:21:01) 
Under Polygon Overlap (in Geometry) Posted on 20170417 (1 Comments) 
 solution by Charlie (20170417 10:49:34) 
Under Pandigital and square (in Numbers) Posted on 20170415 (6 Comments) 
 computer solution by Charlie (20170415 14:22:31) 
Under Growth Potential (in Algorithms) Posted on 20170413 (4 Comments) 
 Two proposed proofs by Charlie (20170413 10:03:35) 
Under Names in Boxes (in Logic) Posted on 20170409 (10 Comments) 
 re(3): Loops by Charlie (20170412 14:41:51) 
 re: Loops by Charlie (20170412 10:54:02) 
Under Excellent numbers (in Numbers) Posted on 20170408 (3 Comments) 
 computer solution: 6, 8 and 10digits by Charlie (20170408 12:17:11) 
Under The magnificent twelve (in Numbers) Posted on 20170407 (3 Comments) 
 computer solution (spoiler)  with a caveat on the restrictions by Charlie (20170407 12:26:51) 
Under Three mirrored multiplications (in Numbers) Posted on 20170402 (1 Comments) 
 computer solution by Charlie (20170402 12:40:21) 
Under Prime power puzzle (in Just Math) Posted on 20170401 (9 Comments) 
 re(2): Half A proof by Charlie (20170402 19:08:32) 
 re: computer so far by Charlie (20170402 09:56:47) 
 computer so far by Charlie (20170401 15:57:10) 
Under Why is it D2? (in Numbers) Posted on 20170327 (4 Comments) 
 In the other spirit by Charlie (20170327 11:15:37) 
 part 2 by Charlie (20170327 10:41:15) 
 A different answer by Charlie (20170327 10:37:55) 
Under 1 is one of them (in Numbers) Posted on 20170325 (2 Comments) 
 computer solution by Charlie (20170325 14:51:18) 
Under True for nine and up (in Numbers) Posted on 20170324 (3 Comments) 
 With some computer aid by Charlie (20170324 11:00:45) 
Under Elongated Pentagonal Orthocupola's vertices (in Shapes) Posted on 20170320 (3 Comments) 
 re: solution by Charlie (20170320 12:31:07) 
Under Leave no stone unturned (in Logic) Posted on 20170319 (5 Comments) 
 re: Other cases by Charlie (20170319 14:33:33) 
 solution by Charlie (20170319 13:32:00) 
Under A rare palindrome (in Numbers) Posted on 20170318 (1 Comments) 
 computer solution by Charlie (20170318 13:48:46) 
Under Primes and factors (in Numbers) Posted on 20170317 (2 Comments) 
 computer solution carried beyond by Charlie (20170317 10:23:55) 
Under Same side story (in Probability) Posted on 20170316 (5 Comments) 
 re: Corrected solution by Charlie (20170329 10:46:12) 
Under Integers and their sums of digits (in Just Math) Posted on 20170313 (3 Comments) 
 computer solution by Charlie (20170319 11:38:14) 
Under Facing each other (in Just Math) Posted on 20170307 (2 Comments) 
 solution (spoiler) by Charlie (20170307 09:39:18) 
Under Only real x counted (in Probability) Posted on 20170301 (3 Comments) 
 solution (spoiler) by Charlie (20170301 10:52:32) 
Under a KISS puzzle (in Just Math) Posted on 20170227 (2 Comments) 
 solution by Charlie (20170227 10:10:00) 
Under Areas ratio (in Probability) Posted on 20170224 (1 Comments) 
 solution by Charlie (20170224 11:18:28) 
Under Odds are ... (in Probability) Posted on 20170214 (10 Comments) 
 Higher numbers before overflow by Charlie (20170214 11:42:28) 
 probabilities by Charlie (20170214 11:34:26) 
 re: Argument (no math) by Charlie (20170214 10:03:01) 
Under Most words from your word (in Word Problems) Posted on 20170210 (10 Comments) 
 re: some computer results  the program by Charlie (20170210 23:31:27) 
 some computer results by Charlie (20170210 23:27:17) 
Under Lies, truth, and logic (in Liars and Knights) Posted on 20170209 (2 Comments) 
 Lots of solutions even between 20 and 40 by Charlie (20170209 21:31:10) 
Under A better approximate Pythagorean Theorem (in Calculus) Posted on 20170208 (1 Comments) 
 heuristic estimate based on computer program by Charlie (20170208 10:51:42) 
Under Forward and Backward Word Values (in General) Posted on 20170207 (5 Comments) 
 I don't know what truncated my previous list, but by Charlie (20170208 08:28:57) 
 computer solution (spoiler) by Charlie (20170207 12:51:37) 
Under Given VI, evaluate VII (in Sequences) Posted on 20170201 (1 Comments) 
 computer solution (spoiler) by Charlie (20170201 10:55:25) 
Under Multiples with 3 (in Numbers) Posted on 20170131 (3 Comments) 
 computer solution, taken beyond by Charlie (20170131 12:59:29) 
Under Opening your eyes (in Famous Riddles) Posted on 20170128 (2 Comments) 
 A Google search on the wording by Charlie (20170129 12:49:59) 
Under A false conjecture (in Numbers) Posted on 20170127 (7 Comments) 
 re: computer attempt by Charlie (20170127 14:24:25) 
 computer attempt by Charlie (20170127 12:37:47) 
Under 1,3,8 ...extend! (in Numbers) Posted on 20170126 (4 Comments) 
 computer finding by Charlie (20170126 14:38:53) 
Under Ain't she clever? (in Just Math) Posted on 20170124 (1 Comments) 
 solution given certain assumptions by Charlie (20170124 11:15:52) 
Under Topical Quotation V (in Word Problems) Posted on 20170118 (1 Comments) 
 Hint by Charlie (20170119 22:30:20) 
Under An interesting recurrence (in Numbers) Posted on 20170117 (5 Comments) 
 computer solution by Charlie (20170117 11:20:42) 
Under Age Progression (in Numbers) Posted on 20170116 (3 Comments) 
 the cases  to age 100 by Charlie (20170116 16:01:35) 
Under 2nd grade math (in Probability) Posted on 20170112 (4 Comments) 
 re: solution  so about that math test by Charlie (20170113 10:55:22) 
 re: solution  simulation verification by Charlie (20170112 21:38:09) 
 solution by Charlie (20170112 14:48:35) 
Under (x−y)^ n = xy (in Just Math) Posted on 20170107 (2 Comments) 
 computer exploration by Charlie (20170107 14:46:42) 
Under From Tangent to Circle (in Geometry) Posted on 20170104 (4 Comments) 
 solution for part 2; outline for part 1 by Charlie (20170104 13:38:09) 
Under Counting brackets (in Just Math) Posted on 20170103 (1 Comments) 
 computer exploration and solution by Charlie (20170103 15:22:32) 
Under Which is the biggest? (in Numbers) Posted on 20170102 (2 Comments) 
 solution by Charlie (20170102 10:43:01) 
Under Congruent Incircles (in Geometry) Posted on 20170101 (6 Comments) 
 numerical computer solution by Charlie (20170101 12:43:06) 
Under Skill or food? (in Numbers) Posted on 20161228 (5 Comments) 
 re(3): Crazy for coconuts extra hint by Charlie (20161229 10:39:38) 
 software solution by Charlie (20161228 11:29:28) 
Under Who discovered the secret? (in Logic) Posted on 20161227 (4 Comments) 
 solution by Charlie (20161227 09:45:00) 
Under Nothing's perfect. (in Sequences) Posted on 20161224 (1 Comments) 
 computer exploration by Charlie (20161226 08:56:34) 
Under A chain of powers (in Sequences) Posted on 20161222 (1 Comments) 
 computer observations by Charlie (20161222 09:37:15) 
Under Prime candidates (in Just Math) Posted on 20161220 (5 Comments) 
 computer exploration by Charlie (20161220 13:34:08) 
Under Legally Blonde (in Liars and Knights) Posted on 20161219 (8 Comments) 
 another way by Charlie (20161219 10:31:34) 
Under Traveling with Luggage (in Logic) Posted on 20161215 (2 Comments) 
 computer solution (spoiler) by Charlie (20161215 10:38:16) 
Under Decimal and Binary Representation (in Numbers) Posted on 20161213 (3 Comments) 
 computer solution (spoiler) by Charlie (20161214 10:23:49) 
 re: hint based somewhat on computer findings by Charlie (20161213 14:11:27) 
 hint based somewhat on computer findings by Charlie (20161213 10:31:41) 
Under Pentagon Partitions (in Shapes) Posted on 20161211 (3 Comments) 
 re: A solution (spoiler) by Charlie (20161212 11:19:42) 
Under Gluing Cubes (in Shapes) Posted on 20161208 (1 Comments) 
 proposed solution by Charlie (20161208 10:28:20) 
Under A ragman from 3 to 10 (in Word Problems) Posted on 20161207 (2 Comments) 
 9 and 10 by Charlie (20161207 13:32:40) 
 computer solution for lengths 5 through 8 by Charlie (20161207 11:08:02) 
Under Moving Two Rooks (in Games) Posted on 20161206 (2 Comments) 
 re: For the Win (spoiler) by Charlie (20161206 15:37:11) 
Under Four integers (in Numbers) Posted on 20161204 (8 Comments) 
 extending the limit to 1700 (spoiler) by Charlie (20161204 11:05:42) 
 computer solution (spoiler) by Charlie (20161204 11:01:08) 
Under A biased random walk (in Probability) Posted on 20161201 (1 Comments) 
 computer exploration by Charlie (20161201 09:21:44) 
Under 7+8=12 ?? (in Just Math) Posted on 20161130 (3 Comments) 
 computer solution (spoiler) by Charlie (20161130 10:29:30) 
Under composite function (in Calculus) Posted on 20161129 (2 Comments) 
 by graphing by Charlie (20161129 13:59:19) 
Under 26 out of 50 (in Just Math) Posted on 20161125 (10 Comments) 
 re: Inelegant proof? by Charlie (20161128 08:05:55) 
Under Prime repunits (in Numbers) Posted on 20161124 (5 Comments) 
 computer exploration by Charlie (20161124 17:59:10) 
Under On the same floor (in Just Math) Posted on 20161122 (13 Comments) 
 re: the computer says   my mistake by Charlie (20161123 20:22:57) 
 the computer says by Charlie (20161123 20:14:31) 
 re(2): How many...... g o o f by Charlie (20161122 22:17:10) 
 How many by Charlie (20161122 11:23:45) 
Under At least twice (in Numbers) Posted on 20161117 (5 Comments) 
 below four trillion by Charlie (20161117 15:18:11) 
 re(2): a star ... a hint by Charlie (20161117 12:57:26) 
 a start by Charlie (20161117 09:31:01) 
Under Maximizing the sum (in Numbers) Posted on 20161116 (4 Comments) 
 the program by Charlie (20161116 10:22:00) 
 part b in more concise form by Charlie (20161116 10:19:56) 
 list continued by Charlie (20161116 10:15:12) 
 e pluribus duo by Charlie (20161116 10:13:46) 
Under A radical problem (in Just Math) Posted on 20161115 (2 Comments) 
 solution by Charlie (20161115 10:39:36) 
Under Don't be confused (in General) Posted on 20161114 (4 Comments) 
 using a calculator by Charlie (20161114 12:41:24) 
Under Linear*Quadratic = Square (in Just Math) Posted on 20161112 (2 Comments) 
 computer exploration by Charlie (20161112 10:59:45) 
Under 6 given, 2 wanted (in Sequences) Posted on 20161111 (5 Comments) 
 re(3): Hint #2: by Charlie (20161114 07:53:59) 
 re: Hint #2: by Charlie (20161113 13:20:20) 
Under 63 Division Decision (in Just Math) Posted on 20161110 (3 Comments) 
 computer solution by Charlie (20161110 12:42:32) 
Under AABBCC and Perfect Square (in Just Math) Posted on 20161109 (6 Comments) 
 computer solution by Charlie (20161109 13:37:06) 
Under Lucas Digits Look (in Just Math) Posted on 20161107 (21 Comments) 
 re: solution+ by Charlie (20161107 10:59:44) 
 solution+ by Charlie (20161107 10:54:14) 
Under Your conclusion requested (in Logic) Posted on 20161103 (9 Comments) 
 re(4): Answer .... to your questions by Charlie (20161112 15:07:54) 
 re: Answer by Charlie (20161110 15:43:37) 
 My conclusion by Charlie (20161103 09:22:32) 
Under A peculiar triplet (in Just Math) Posted on 20161101 (7 Comments) 
 re(2): The triple without complete proof by Charlie (20161101 13:42:44) 
 re: The triple without complete proof by Charlie (20161101 13:40:17) 
Under Equal Temperatures (in Just Math) Posted on 20161031 (6 Comments) 
 re(2): computer solution by Charlie (20161031 19:19:55) 
 re: No Subject by Charlie (20161031 11:54:31) 
 computer solution by Charlie (20161031 11:53:55) 
Under Reciprocal Period Poser (in Just Math) Posted on 20161029 (2 Comments) 
 computer solution by Charlie (20161029 10:49:24) 
Under Symmetry helps! (in Just Math) Posted on 20161026 (7 Comments) 
 computer exploration by Charlie (20161026 12:08:23) 
Under Figuring FortyNine and Sequence (in Sequences) Posted on 20161025 (2 Comments) 
 No proof, but ... by Charlie (20161025 09:18:28) 
Under Totient Trial (in Just Math) Posted on 20161024 (2 Comments) 
 computer solution by Charlie (20161024 19:16:26) 
Under Prime and Twice Square (in Just Math) Posted on 20161022 (4 Comments) 
 re: A solution by Charlie (20161022 15:54:41) 
Under A little twist (in Just Math) Posted on 20161021 (4 Comments) 
 re(2): computer solution.....yes,but... by Charlie (20161022 08:50:05) 
 computer solution by Charlie (20161021 14:46:29) 
Under Dodecahedron Chance Determination (in Probability) Posted on 20161020 (6 Comments) 
 re(3): clarification by Charlie (20161020 16:48:08) 
 re(2): clarification by Charlie (20161020 16:04:43) 
 For 1  12 by Charlie (20161020 15:30:10) 
 solution for puzzle as originally given by Charlie (20161020 15:13:11) 
Under Why not marry? (in Logic) Posted on 20161019 (6 Comments) 
 Interesting variation in first cousin marriage in U.S. by Charlie (20161019 14:37:22) 
 Two ways. by Charlie (20161019 08:55:46) 
Under Positively Positive (in Just Math) Posted on 20161018 (7 Comments) 
 findings by Charlie (20161018 16:18:25) 
Under Mismatch Muse (in Logic) Posted on 20161018 (1 Comments) 
 proposed solution by Charlie (20161018 10:58:05) 
Under Prime and Six Settlement (in Just Math) Posted on 20161017 (4 Comments) 
 solution by Charlie (20161017 10:51:13) 
Under get the real part of the problem (in Just Math) Posted on 20161016 (1 Comments) 
 solution by Charlie (20161016 11:13:54) 
Under this is the range of my root (in Just Math) Posted on 20161014 (1 Comments) 
 analysis then computation by Charlie (20161014 15:41:10) 
Under Phibobrick's dimensions (in Numbers) Posted on 20161014 (1 Comments) 
 proposed solution by Charlie (20161014 11:45:47) 
Under River Cross Resolution (in Weights and Scales) Posted on 20161012 (1 Comments) 
 computer solution by Charlie (20161012 12:21:50) 
Under Adding consecutive primes (in Just Math) Posted on 20161011 (1 Comments) 
 computer solution by Charlie (20161011 13:45:47) 
Under Four Digit Arithmetic (in Just Math) Posted on 20161011 (2 Comments) 
 computer solution by Charlie (20161011 09:52:41) 
Under Bridge Cross Baffle (in Logic) Posted on 20161010 (3 Comments) 
 Wouldda, Coudda, Shouldda done it by computer by Charlie (20161010 15:45:39) 
 proposed solution by Charlie (20161010 12:17:24) 
Under polynomial problem 3 (in Just Math) Posted on 20161008 (2 Comments) 
 D4? (spoiler) by Charlie (20161008 09:32:36) 
Under 2 sums modulo 7 (in Probability) Posted on 20161005 (3 Comments) 
 re(2): some computed values by Charlie (20161005 18:12:19) 
 re: some computed values by Charlie (20161005 14:49:05) 
 some computed values by Charlie (20161005 14:43:35) 
Under Additional solutions, please (in Just Math) Posted on 20161003 (3 Comments) 
 re(2): computer solution  final part by Charlie (20161003 18:10:37) 
 re: computer solution  continued by Charlie (20161003 18:09:13) 
 computer solution by Charlie (20161003 18:07:32) 
Under Unit Cube Paint Undertaking (in Shapes) Posted on 20160928 (6 Comments) 
 Considering all the possibilities by Charlie (20160928 15:29:47) 
 re: Interesting. by Charlie (20160928 12:23:22) 
Under No data  just a weighing problem (in General) Posted on 20160927 (2 Comments) 
 re: My solution by Charlie (20160927 16:02:30) 
Under Numbers' quantifiers (in Logic) Posted on 20160923 (4 Comments) 
 re(2): a try by Charlie (20160923 21:43:17) 
 a try by Charlie (20160923 15:48:50) 
Under Nonnegative Sum Nuance (in Probability) Posted on 20160923 (1 Comments) 
 solution by Charlie (20160923 10:44:58) 
Under A cyclic path (in Geometry) Posted on 20160921 (1 Comments) 
 first guess by Charlie (20160921 12:43:29) 
Under Biting the Apple (in Tricks) Posted on 20160921 (3 Comments) 
 re: One way to do it  close by Charlie (20160921 11:15:35) 
Under Real roots from three dice (in Probability) Posted on 20160920 (1 Comments) 
 computeraided solution by Charlie (20160920 15:43:45) 
Under Unbiased and Biased Choice (in Probability) Posted on 20160919 (1 Comments) 
 solution by Charlie (20160919 10:56:17) 
Under Provide the next number (in Sequences) Posted on 20160918 (2 Comments) 
 that, I guess, was hint enough by Charlie (20160924 13:11:25) 
Under GCD and LCM (in Just Math) Posted on 20160916 (1 Comments) 
 solution by Charlie (20160916 10:18:50) 
Under Ascending Hexadecimal Digits (in Just Math) Posted on 20160915 (1 Comments) 
 solution by Charlie (20160915 10:08:44) 
Under NegaTernary Nuance (in Algorithms) Posted on 20160914 (2 Comments) 
 solution by Charlie (20160914 11:01:03) 
Under Duodecimal Pandigital Divisibility Device (in Algorithms) Posted on 20160913 (2 Comments) 
 Choice of two algorithms by Charlie (20160913 09:51:04) 
Under Think twice (in Just Math) Posted on 20160912 (4 Comments) 
 The apparent solution by Charlie (20160912 10:33:10) 
Under Finding the hidden digit (in Tricks) Posted on 20160909 (1 Comments) 
 solution by Charlie (20160909 10:54:07) 
Under Dice Roll Resolution (in Probability) Posted on 20160908 (4 Comments) 
 re: Attempt at simulating part ii by Charlie (20160908 13:56:17) 
 Attempt at simulating part ii by Charlie (20160908 13:29:23) 
 Actual part i simulation by Charlie (20160908 13:11:57) 
 simulation of a simpler case by Charlie (20160908 12:10:15) 
Under Counting ARATs (in Numbers) Posted on 20160907 (4 Comments) 
 Corrected version for c<100,000 by Charlie (20160907 12:57:02) 
 re: programming mistake; also need faster computer/programming language by Charlie (20160907 10:41:16) 
 programming mistake; also need faster computer/programming language by Charlie (20160907 10:23:17) 
Under Nineteenth Exponent Exposition (in Just Math) Posted on 20160906 (3 Comments) 
 An analytic start and a calculator finish by Charlie (20160906 15:42:04) 
Under 1248 must be included (in Sequences) Posted on 20160906 (3 Comments) 
 Brute force (computer solution) by Charlie (20160906 10:19:42) 
Under Form Finding From Solution (in Just Math) Posted on 20160905 (2 Comments) 
 seems to be a solution by Charlie (20160905 12:35:06) 
Under Getting 189 (in Numbers) Posted on 20160905 (1 Comments) 
 solution by Charlie (20160905 10:05:38) 
Under Tetra Anagram Trial (in Word Problems) Posted on 20160902 (4 Comments) 
 Computer exploration and a guess by Charlie (20160902 09:42:55) 
Under Empty or fool ?? (in Logic) Posted on 20160901 (1 Comments) 
 solution by Charlie (20160901 12:57:44) 
Under Divisibility Property (in Numbers) Posted on 20160831 (2 Comments) 
 With software by Charlie (20160831 11:12:32) 
Under Near Fermat Nuance (in Just Math) Posted on 20160830 (2 Comments) 
 computer solution by Charlie (20160830 15:03:22) 
Under Add missing letters (in Word Problems) Posted on 20160830 (3 Comments) 
 re: answer by Charlie (20160831 07:43:17) 
Under Random Chess Pieces Poser (in Probability) Posted on 20160829 (6 Comments) 
 re(3): computer aided solution (corrected answer) by Charlie (20160830 21:30:02) 
 re(3): computer aided solution by Charlie (20160830 19:58:28) 
 re(2): computer aided solution by Charlie (20160830 07:45:29) 
 computer aided solution by Charlie (20160829 16:31:03) 
Under Which is greater? (in Just Math) Posted on 20160828 (3 Comments) 
 computer solution (spoiler) by Charlie (20160828 10:29:43) 
Under All rational numbers in (in Sequences) Posted on 20160826 (10 Comments) 
 re(2): From N/D to n @ jer & Charlie by Charlie (20160829 07:27:49) 
 re: From N/D to n by Charlie (20160828 22:27:57) 
Under Powers of 3 (in Numbers) Posted on 20160825 (5 Comments) 
 Computer exploration by Charlie (20160825 14:11:11) 
Under Labeling Minimum (in Weights and Scales) Posted on 20160825 (4 Comments) 
 re(2): Solution by Charlie (20160825 14:08:39) 
Under Eight Points (in Probability) Posted on 20160824 (3 Comments) 
 Just for curiosity, random points in a square by Charlie (20160825 09:34:10) 
 simulation by Charlie (20160824 18:30:39) 
Under Business is business (in Word Problems) Posted on 20160824 (6 Comments) 
 re: Hint for previous solvers. by Charlie (20160824 10:53:52) 
 A short couplet by Charlie (20160824 08:32:10) 
Under Murder Muse Resolution (in Riddles) Posted on 20160823 (1 Comments) 
 solution by Charlie (20160823 12:37:08) 
Under Year from Ratio (in General) Posted on 20160822 (3 Comments) 
 re: No Subject by Charlie (20160823 19:52:39) 
Under Estimate a percentage (in Numbers) Posted on 20160822 (6 Comments) 
 potential solution by Charlie (20160822 10:03:49) 
Under Covering a Cube with Strips (in Shapes) Posted on 20160818 (3 Comments) 
 solution by Charlie (20160818 17:03:06) 
Under Guessing your birthdate (in Just Math) Posted on 20160818 (4 Comments) 
 re: part a by Charlie (20160819 22:20:11) 
 part b is easiest with a computer; part a not so much by Charlie (20160818 11:05:32) 
Under Summing up (in Sequences) Posted on 20160817 (2 Comments) 
 solution by Charlie (20160817 14:33:35) 
Under 4 groups of 4 (in Word Problems) Posted on 20160816 (8 Comments) 
 re(2): with computer assistance by Charlie (20160816 19:25:11) 
 with computer assistance by Charlie (20160816 13:48:36) 
 first thoughts by Charlie (20160816 13:05:33) 
Under 240 divisors (in Just Math) Posted on 20160815 (1 Comments) 
 Analytic guesses plus computer verification (spoiler) by Charlie (20160815 10:27:39) 
Under 1234 Square (in Geometry) Posted on 20160812 (3 Comments) 
 solutions by Charlie (20160812 10:38:54) 
Under Form 21 n Times II (in Numbers) Posted on 20160811 (5 Comments) 
 re: Full solution  SPOILER by Charlie (20160811 09:06:28) 
Under Find additional pairs (in Just Math) Posted on 20160808 (5 Comments) 
 re: computer solution by Charlie (20160808 22:19:57) 
 computer solution by Charlie (20160808 22:12:14) 
Under Binomial GCDs (in Just Math) Posted on 20160808 (2 Comments) 
 Heuristic solution by Charlie (20160808 14:34:12) 
Under Visiting Toronto (in Numbers) Posted on 20160805 (1 Comments) 
 computer solution by Charlie (20160810 07:56:26) 
Under Remainder Resolution from Multiple (in Just Math) Posted on 20160804 (5 Comments) 
 computer solution by Charlie (20160804 10:43:25) 
Under Pandigital Multiples of 99 (in Numbers) Posted on 20160803 (2 Comments) 
 solution by Charlie (20160803 14:19:15) 
Under Quadratic and Linear (in Just Math) Posted on 20160803 (2 Comments) 
 computer solution by Charlie (20160803 10:32:48) 
Under Pentagon and Acute Probability (in Probability) Posted on 20160802 (1 Comments) 
 solution by Charlie (20160802 11:54:27) 
Under Staggering Digits (in Just Math) Posted on 20160728 (4 Comments) 
 re: Solution by Charlie (20160728 15:20:11) 
 needed a computer by Charlie (20160728 15:12:04) 
Under A surprising prime gap (in Numbers) Posted on 20160727 (8 Comments) 
 re(5): My solution by Charlie (20160801 07:57:10) 
 re(3): My solution by Charlie (20160731 18:45:10) 
 re: My solution by Charlie (20160730 09:13:56) 
 computer solution by Charlie (20160727 16:45:07) 
Under A chain of command (in Just Math) Posted on 20160726 (2 Comments) 
 solution if there's no trick by Charlie (20160726 13:35:10) 
Under Go back or double (in Sequences) Posted on 20160725 (5 Comments) 
 re: An uncertain shorthand for part II by Charlie (20160726 15:04:35) 
 part 1 by Charlie (20160725 10:17:43) 
Under Seventh Term Settlement (in Sequences) Posted on 20160722 (10 Comments) 
 re: answer by Charlie (20160722 10:39:59) 
 computer solution by Charlie (20160722 10:34:02) 
Under Cute numbers (in Numbers) Posted on 20160721 (5 Comments) 
 re(2): short review.....augmented by Charlie (20160722 07:45:36) 
 computer solution (spoiler) by Charlie (20160721 10:36:42) 
Under Smallest Multiple of 99 (in Just Math) Posted on 20160719 (3 Comments) 
 Seems to be by Charlie (20160719 14:51:57) 
Under Two items to get sqrt of 2 (in Science) Posted on 20160719 (5 Comments) 
 another way by Charlie (20160719 10:42:59) 
Under The First Repeat (in Probability) Posted on 20160718 (5 Comments) 
 re: answers by Charlie (20160718 15:13:55) 
 solution by Charlie (20160718 15:04:40) 
Under Denver is not the issue (in Word Problems) Posted on 20160718 (5 Comments) 
 re(2): Strong clues from A.A.Euler. (spoiler) by Charlie (20160719 08:01:57) 
 Strong clues from A.A.Euler. by Charlie (20160718 11:33:10) 
Under Cube Count Calculation (in Shapes) Posted on 20160713 (1 Comments) 
 solution by Charlie (20160713 12:55:10) 
Under Two Digit Diameter Trial (in Shapes) Posted on 20160711 (2 Comments) 
 computer solution (spoiler) by Charlie (20160711 15:31:47) 
Under Multiple Harshad Numbers (in Numbers) Posted on 20160710 (12 Comments) 
 re(3): Moby Dick has been captured  part 2 solved by Charlie (20160714 15:10:48) 
 re(2): Moby Dick has been captured  part 2 solved by Charlie (20160714 15:04:28) 
 re: phase 24 output continued by Charlie (20160714 11:19:39) 
 phase 24 output by Charlie (20160714 11:18:15) 
 Moby Dick has been captured  part 2 solved by Charlie (20160714 11:08:43) 
 re: The method for part 2 by Charlie (20160710 21:13:38) 
 re(2): part one by Charlie (20160710 15:00:45) 
 The method for part 2 by Charlie (20160710 14:27:26) 
 re: part one by Charlie (20160710 13:06:36) 
 part one by Charlie (20160710 12:43:17) 
Under Amicable pair generator (in Numbers) Posted on 20160708 (1 Comments) 
 Computer exploration by Charlie (20160708 15:33:47) 
Under Disk Toss on a Grid (in Probability) Posted on 20160708 (4 Comments) 
 re: Three answers (spoiler) by Charlie (20160708 20:46:20) 
 solution by Charlie (20160708 11:17:15) 
Under Two out of seven (in Numbers) Posted on 20160707 (2 Comments) 
 computer solution (spoiler) by Charlie (20160707 15:29:29) 
Under Not too high, not too low (in Just Math) Posted on 20160706 (3 Comments) 
 my solution by Charlie (20160706 14:52:48) 
Under Find Counterexamples (in Numbers) Posted on 20160706 (1 Comments) 
 computer solution to part 1 by Charlie (20160706 10:12:59) 
Under Sequence starting with 30 (in Numbers) Posted on 20160705 (3 Comments) 
 program; research; program by Charlie (20160705 14:43:03) 
Under Quadrilateral Area Query 2 (in Shapes) Posted on 20160703 (3 Comments) 
 another approach by Charlie (20160703 09:40:53) 
Under Pentagonal triple triangles (in Geometry) Posted on 20160701 (4 Comments) 
 re: computer method (the part that wouldn't fit) by Charlie (20160701 10:14:21) 
 computer method by Charlie (20160701 10:13:19) 
Under 4 numbers make 5 squares (in Numbers) Posted on 20160630 (10 Comments) 
 re(2): Row of text ok?  solutions found by Charlie (20160701 14:09:05) 
 re: Row of text ok? by Charlie (20160701 13:55:57) 
 re(2): A (bad?) guess by Charlie (20160701 11:02:44) 
 re: A (bad?) guess by Charlie (20160701 10:55:04) 
 re(2): computer solution and discussion by Charlie (20160630 22:36:30) 
 computer solution and discussion by Charlie (20160630 11:20:00) 
Under Square Temperatures (in Just Math) Posted on 20160629 (2 Comments) 
 Assuming... by Charlie (20160629 16:27:56) 
Under Simple number trick (in Numbers) Posted on 20160629 (5 Comments) 
 comment by Charlie (20160629 10:13:15) 
Under Pandigital pattern (in Numbers) Posted on 20160628 (2 Comments) 
 Computer exploration by Charlie (20160628 10:16:49) 
Under Skip to 4th power (in Numbers) Posted on 20160627 (4 Comments) 
 convincing but not a proof by Charlie (20160627 19:57:01) 
Under Square Sum in Pairs (in Just Math) Posted on 20160627 (2 Comments) 
 computer solution by Charlie (20160627 13:57:18) 
Under Sum Number and Reversal (in Just Math) Posted on 20160624 (5 Comments) 
 computer assisted by Charlie (20160624 14:03:57) 
Under Find From Four 2 (in Just Math) Posted on 20160623 (4 Comments) 
 computer solution by Charlie (20160623 17:02:39) 
Under Capital City Conclusion 2 (in Word Problems) Posted on 20160623 (4 Comments) 
 Excluded because of nonsovereignty by Charlie (20160623 10:21:18) 
Under 2016 and Perfect Square Puzzle (in Just Math) Posted on 20160622 (4 Comments) 
 computer solution by Charlie (20160622 16:15:15) 
Under Celsius A Fahrenheit Multiple? (in Just Math) Posted on 20160621 (7 Comments) 
 re: And another.. by Charlie (20160622 12:42:25) 
 five solutions by Charlie (20160622 08:16:39) 
 re: No Subject  looks like I solved the problem wrong way around by Charlie (20160622 07:54:31) 
 No Subject by Charlie (20160621 15:23:03) 
Under Three vowels (in Word Problems) Posted on 20160621 (4 Comments) 
 A lot of computer work... by Charlie (20160621 10:32:32) 
Under Find the killer (in Liars and Knights) Posted on 20160620 (5 Comments) 
 solution by Charlie (20160620 18:46:16) 
Under Circle cuts (in Shapes) Posted on 20160620 (1 Comments) 
 Squaring the circle... by Charlie (20160620 10:47:16) 
Under Hexadecimal Hinder (in Probability) Posted on 20160619 (6 Comments) 
 re: part (i) solution  correction by Charlie (20160620 21:56:20) 
 part (iv) solution by Charlie (20160620 10:37:02) 
 part (iii) solution by Charlie (20160620 09:01:51) 
 Simulations for all parts by Charlie (20160619 21:25:11) 
 part (ii) solution by Charlie (20160619 18:44:57) 
 part (i) solution by Charlie (20160619 15:07:44) 
Under Roman Numeral and Letter Insertion (in Word Problems) Posted on 20160617 (2 Comments) 
 computer findings by Charlie (20160617 14:27:27) 
Under Digit Finding with Hexadecimal Fibonacci (in Just Math) Posted on 20160616 (1 Comments) 
 computer solution by Charlie (20160616 15:09:16) 
Under A transpogram (in Word Problems) Posted on 20160616 (1 Comments) 
 solution by Charlie (20160616 09:53:34) 
Under Progressive probability (in Probability) Posted on 20160615 (1 Comments) 
 computer exploration  solution for first part only by Charlie (20160615 15:57:28) 
Under Comparing two events (in Probability) Posted on 20160615 (3 Comments) 
 re: solution by Charlie (20160616 09:47:20) 
 spoiler  try it yourself first by Charlie (20160616 09:43:00) 
Under Objective: Integer! (in Geometry) Posted on 20160614 (4 Comments) 
 re: Interesting by Charlie (20160615 07:44:09) 
 computer solution by Charlie (20160614 15:43:05) 
Under Arithmetic Product Puzzle 2 (in Sequences) Posted on 20160614 (2 Comments) 
 computer solution by Charlie (20160614 09:55:53) 
Under Hundred Product Hinder (in Just Math) Posted on 20160613 (2 Comments) 
 computer solution (seems unique) by Charlie (20160613 15:15:33) 
Under Squared halves (in Numbers) Posted on 20160610 (1 Comments) 
 computer solution (spoiler) by Charlie (20160610 15:02:02) 
Under Term Finding with Floor (in Sequences) Posted on 20160609 (3 Comments) 
 computer solution (spoiler) by Charlie (20160609 10:31:50) 
Under Matching pegs (in Probability) Posted on 20160608 (2 Comments) 
 stepbystep diffusion and coalescence of the probabilities by Charlie (20160608 13:27:03) 
 computer assisted solution by Charlie (20160608 13:19:16) 
Under Twice 2 products (in Numbers) Posted on 20160607 (2 Comments) 
 re: Exhausted Spoiler  doubling the answers by Charlie (20160607 13:35:34) 
Under One of these things is not like the others.. (in Word Problems) Posted on 20160607 (5 Comments) 
 re: No Subject by Charlie (20160607 13:37:41) 
Under Random Sum Resolution (in Probability) Posted on 20160606 (1 Comments) 
 solution by Charlie (20160606 10:51:52) 
Under Three expressions  same value (in Just Math) Posted on 20160602 (3 Comments) 
 computer assisted solution by Charlie (20160602 15:25:05) 
Under No fours on my odometer (in Just Math) Posted on 20160602 (2 Comments) 
 re: Possible solution. by Charlie (20160602 09:09:32) 
Under King on the run (in Just Math) Posted on 20160601 (5 Comments) 
 computer assisted solution by Charlie (20160601 15:37:46) 
Under Edge problem (in Geometry) Posted on 20160531 (3 Comments) 
 solution after a false assumption by Charlie (20160531 16:07:57) 
Under Latin verse (in Word Problems) Posted on 20160531 (5 Comments) 
 re: Very ancient latin by Charlie (20160531 16:12:36) 
Under List the expressionist numbers (in Numbers) Posted on 20160530 (10 Comments) 
 Part 1 down to 67 entries after eliminating the spurious by Charlie (20160602 07:31:32) 
 Part 1 redone allowing unary negation by Charlie (20160601 08:04:18) 
 Supplement to part 1 list by Charlie (20160531 08:40:44) 
 re: Computer solutions by Charlie (20160531 07:39:57) 
 Part 2 and Bonus by Charlie (20160531 07:31:18) 
 Computer "solution" part 1  no guarantee of completeness by Charlie (20160531 07:27:45) 
Under Finding the fixes (in Numbers) Posted on 20160529 (4 Comments) 
 re: computer solution and discussion by Charlie (20160529 11:37:40) 
 re: Stop me before I replace again! by Charlie (20160529 11:27:58) 
 computer solution and discussion by Charlie (20160529 11:22:38) 
Under Power of 2 (in Numbers) Posted on 20160527 (6 Comments) 
 computer solution by Charlie (20160527 15:12:52) 
Under Mark's itinerary (in Probability) Posted on 20160526 (5 Comments) 
 re: An by Charlie (20160529 14:06:54) 
 Analytic + Simulation + Probabilistic by Charlie (20160526 14:22:24) 
Under 2016 and Simultaneous Settlement (in Just Math) Posted on 20160526 (2 Comments) 
 computer solution (spoiler) by Charlie (20160526 10:55:52) 
Under Duodecimal Element Sum Settlement (in Just Math) Posted on 20160525 (3 Comments) 
 working in decimal, same answer by Charlie (20160525 14:22:58) 
Under Colored Candy Choice (in Probability) Posted on 20160525 (10 Comments) 
 re(3): Second part by Charlie (20160526 15:13:50) 
 re: Second part by Charlie (20160525 21:05:17) 
 re(2): No Subject @ Charlie by Charlie (20160525 20:24:18) 
 No Subject by Charlie (20160525 11:37:33) 
Under Wanted: gifted numbers (in Numbers) Posted on 20160524 (1 Comments) 
 computer assisted solution by Charlie (20160524 16:06:42) 
Under Projection Ponder (in Shapes) Posted on 20160523 (2 Comments) 
 solution (if I got the algebra right) by Charlie (20160523 15:29:15) 
Under Gambler's policy (in Probability) Posted on 20160520 (2 Comments) 
 computer assisted solution by Charlie (20160520 17:48:05) 
Under Four Digit Combination Conclusion (in Sequences) Posted on 20160518 (1 Comments) 
 solution by Charlie (20160518 19:43:55) 
Under Grid exercise (in Just Math) Posted on 20160518 (2 Comments) 
 2step method by Charlie (20160518 19:49:08) 
Under A square problem (in Just Math) Posted on 20160517 (1 Comments) 
 solution by Charlie (20160517 12:45:44) 
Under AABBCCDD and Perfect Square (in Just Math) Posted on 20160516 (3 Comments) 
 computer solutions by Charlie (20160516 16:23:10) 
Under Two distinct questions (in Just Math) Posted on 20160513 (1 Comments) 
 solution by Charlie (20160513 14:46:05) 
Under From challenge to change (in Word Problems) Posted on 20160512 (4 Comments) 
 70% of them by Charlie (20160512 14:19:12) 
Under Divisible by 198 (in Just Math) Posted on 20160512 (2 Comments) 
 computer solution by Charlie (20160512 10:05:07) 
Under Icosahedron addressed (in Geometry) Posted on 20160511 (2 Comments) 
 The area and a start toward the volume by Charlie (20160511 14:41:18) 
Under Sum ArcTan Limit (in Calculus) Posted on 20160511 (6 Comments) 
 re(3): summing the series via computer by Charlie (20160511 14:55:30) 
 re(2): summing the series via computer by Charlie (20160511 14:45:20) 
 summing the series via computer by Charlie (20160511 10:19:23) 
Under Tanya's puzzle (in Logic) Posted on 20160510 (10 Comments) 
 re(4): could be by Charlie (20160511 07:32:24) 
 could be by Charlie (20160510 14:00:22) 
Under Make it true (in Numbers) Posted on 20160509 (5 Comments) 
 via computer by Charlie (20160509 15:45:58) 
 Quick solution by Charlie (20160509 13:44:23) 
Under Puzzle Calendar (in General) Posted on 20160509 (5 Comments) 
 re(2): Solution  solution is posted by Charlie (20160510 08:29:46) 
Under First Term Finding (in Sequences) Posted on 20160504 (2 Comments) 
 computer solution by Charlie (20160504 13:13:53) 
Under LCM and GCD Equation (in Just Math) Posted on 20160503 (2 Comments) 
 computer solution by Charlie (20160503 19:05:37) 
Under Base Baffle (in Just Math) Posted on 20160502 (2 Comments) 
 solution by Charlie (20160502 14:35:06) 
Under Quadratic and Perfect Square Query (in Just Math) Posted on 20160430 (2 Comments) 
 computer exploration  probable spoiler by Charlie (20160430 09:05:23) 
Under LCM and GCD Sequence (in Sequences) Posted on 20160429 (1 Comments) 
 probable solution (spoiler) by Charlie (20160429 11:30:46) 
Under One and only (in Numbers) Posted on 20160428 (4 Comments) 
 re: spoiler by Charlie (20160428 10:39:05) 
 computer assisted solution by Charlie (20160428 10:34:13) 
Under M.G.'s wit (in Just Math) Posted on 20160427 (3 Comments) 
 Dimensional Analysis by Charlie (20160427 14:29:43) 
Under Think it over (in Logic) Posted on 20160427 (6 Comments) 
 Solution to the distractor by Charlie (20160427 10:35:42) 
Under No Carry Nuance (in Just Math) Posted on 20160426 (3 Comments) 
 Part 1 by Charlie (20160426 13:56:38) 
Under 2 diagonal sums (in Just Math) Posted on 20160426 (1 Comments) 
 solution by Charlie (20160426 10:09:11) 
Under Draw a Line to Partition the Grid (in General) Posted on 20160425 (7 Comments) 
 re(3): Strange by Charlie (20160429 12:52:15) 
 re: Strange by Charlie (20160429 07:55:06) 
 re: Solution? by Charlie (20160426 11:42:47) 
Under Cubic Diophantine Conclusion (in Just Math) Posted on 20160422 (9 Comments) 
 computer exploration by Charlie (20160422 11:11:58) 
Under Eight Digit Product Poser (in Just Math) Posted on 20160420 (1 Comments) 
 with a little help from a Mintoris Basic program (Android) by Charlie (20160420 13:46:12) 
Under Could you please repeat that? (in Probability) Posted on 20160420 (4 Comments) 
 re(2): Laying out the possibilities by Charlie (20160420 14:53:16) 
 Laying out the possibilities by Charlie (20160420 10:36:25) 
Under Asteroid walk (in General) Posted on 20160419 (8 Comments) 
 question by Charlie (20160419 22:46:24) 
Under No Equal Weighings (in Weights and Scales) Posted on 20160418 (4 Comments) 
 re: computer solution  sampling of every 1000th valid sequence by Charlie (20160418 15:10:27) 
 computer solution by Charlie (20160418 14:55:28) 
Under An educated guess (in Probability) Posted on 20160418 (7 Comments) 
 a new simulation by Charlie (20160418 14:44:30) 
 preliminary simulation by Charlie (20160418 09:01:29) 
 Preliminary guess by Charlie (20160418 08:44:45) 
Under Mean Integer Illation (in Just Math) Posted on 20160417 (1 Comments) 
 computer solution by Charlie (20160417 15:30:22) 
Under Electrical Cube 3 (in Science) Posted on 20160415 (1 Comments) 
 solution by Charlie (20160415 19:29:21) 
Under Rectangular Crease Resolution (in Shapes) Posted on 20160415 (2 Comments) 
 GSP says (7 significant figures) by Charlie (20160415 09:52:15) 
Under Three ways  same sum (in Numbers) Posted on 20160414 (3 Comments) 
 computer solution by Charlie (20160414 09:42:14) 
Under Complex Ratio and Number Resolution (in Sequences) Posted on 20160413 (2 Comments) 
 computer assisted solution by Charlie (20160413 14:37:15) 
Under 1 to 9 concatenation (in Numbers) Posted on 20160412 (7 Comments) 
 computer solution by Charlie (20160412 14:58:24) 
Under 2 equal sums (in Just Math) Posted on 20160411 (3 Comments) 
 re: computer exploration  possible spoiler by Charlie (20160411 22:44:38) 
 computer exploration  possible spoiler by Charlie (20160411 15:49:43) 
Under Extreme Palindrome Exercise (in Just Math) Posted on 20160411 (3 Comments) 
 agree by Charlie (20160411 10:16:10) 
Under A Pythagorean triangle (in Numbers) Posted on 20160408 (4 Comments) 
 computer solution by Charlie (20160408 19:21:59) 
Under Square Settlement With Digits (in Just Math) Posted on 20160407 (2 Comments) 
 computer solution by Charlie (20160407 15:40:15) 
Under Tenacious Divisibility Treat (in Just Math) Posted on 20160406 (9 Comments) 
 broll's interpretation is correct by Charlie (20160407 10:41:07) 
 solution by Charlie (20160406 10:14:35) 
Under Year Yearn 3 (in Just Math) Posted on 20160405 (1 Comments) 
 computer solution by Charlie (20160405 10:22:40) 
Under Odd and Even 3 (in Just Math) Posted on 20160404 (6 Comments) 
 re(3): My answers (with and without leading zeros) by Charlie (20160405 22:28:01) 
 re: My answers (with and without leading zeros) by Charlie (20160405 13:33:52) 
 computer solution by Charlie (20160404 19:14:42) 
Under Find this number (in Numbers) Posted on 20160404 (1 Comments) 
 computer solution by Charlie (20160404 11:21:07) 
Under Look for 3 sevens (in Numbers) Posted on 20160401 (2 Comments) 
 computer finds overlooked values by Charlie (20160401 10:48:18) 
Under 4 partitions, same product (in Numbers) Posted on 20160331 (1 Comments) 
 computer solution and discussion by Charlie (20160331 10:32:29) 
Under Fibs and Mods. (in Numbers) Posted on 20160330 (1 Comments) 
 no proof here, just some verification, and a new fact by Charlie (20160330 11:28:53) 
Under Quartering a Square (in Shapes) Posted on 20160329 (4 Comments) 
 re(2): computer solution by Charlie (20160330 08:18:22) 
 re: computer solution by Charlie (20160329 16:08:03) 
 computer solution by Charlie (20160329 15:45:59) 
Under Tatami Tiling (in Shapes) Posted on 20160329 (2 Comments) 
 solution by Charlie (20160329 10:27:33) 
Under Electrical Cube 2 (in Science) Posted on 20160325 (1 Comments) 
 solution by Charlie (20160325 10:22:17) 
Under Sum from Arithmetic and Geometric (in Sequences) Posted on 20160324 (5 Comments) 
 computer solution by Charlie (20160324 15:32:13) 
 re(2): Possible Solution by Charlie (20160324 15:27:09) 
Under Double Reflection (in Geometry) Posted on 20160324 (2 Comments) 
 solution by Charlie (20160324 10:23:45) 
Under Minimizing n (in Numbers) Posted on 20160323 (2 Comments) 
 computer confirmation (solution) by Charlie (20160323 13:34:40) 
Under Neighbors or not? (in Probability) Posted on 20160322 (3 Comments) 
 solution by Charlie (20160322 13:21:52) 
Under Rational Value Validation (in Just Math) Posted on 20160320 (11 Comments) 
 re: solution for 4 elements only by Charlie (20160323 14:52:58) 
 solution for 4 elements only by Charlie (20160322 08:12:50) 
 re(3): cardinality of solution set by Charlie (20160321 17:02:49) 
 re: cardinality of solution set by Charlie (20160321 10:14:55) 
 cardinality of solution set by Charlie (20160321 08:00:01) 
 re(2): Two special results by Charlie (20160320 22:49:12) 
 Two special results by Charlie (20160320 10:26:59) 
 a sampling of 500 at random by Charlie (20160320 10:14:35) 
Under 2 coins (in Probability) Posted on 20160318 (4 Comments) 
 Bayes by Charlie (20160318 11:10:23) 
Under Never 0 mod 3 (in Probability) Posted on 20160317 (7 Comments) 
 re(4): Solution by Charlie (20160317 23:21:55) 
 re(3): Solution by Charlie (20160317 22:33:33) 
 re(2): Solution by Charlie (20160317 21:34:14) 
 re: Solution by Charlie (20160317 14:47:17) 
 Values for the first 5 k by Charlie (20160317 14:39:24) 
Under Find number and base (in Numbers) Posted on 20160317 (6 Comments) 
 solution by Charlie (20160317 10:41:11) 
Under Set Me Up Again (in Numbers) Posted on 20160316 (1 Comments) 
 computer solution by Charlie (20160316 16:10:34) 
Under Minimal cardinality (in Numbers) Posted on 20160316 (3 Comments) 
 proposed solution by Charlie (20160316 09:48:15) 
Under Today is Monday & a PIday (in Numbers) Posted on 20160314 (13 Comments) 
 re(2): My best @ jer and CH by Charlie (20160315 09:00:50) 
 some lower numerator/denominator pairs by Charlie (20160314 14:17:52) 
 computergenerated solving aid by Charlie (20160314 09:05:33) 
Under Only one below 5000 (in Numbers) Posted on 20160311 (4 Comments) 
 computer solution by Charlie (20160311 15:28:34) 
Under Ring of triangles II (in Geometry) Posted on 20160310 (2 Comments) 
 re: computer solution  revised by Charlie (20160310 10:09:56) 
 computer solution by Charlie (20160310 09:43:35) 
Under More bouncing (in Geometry) Posted on 20160309 (3 Comments) 
 re(2): proposed solution by Charlie (20160310 07:32:51) 
 proposed solution by Charlie (20160309 14:28:48) 
Under 8th Term from Term Product (in Sequences) Posted on 20160307 (5 Comments) 
 computer solution by Charlie (20160307 13:43:58) 
Under d1 or more ? (in Numbers) Posted on 20160307 (4 Comments) 
 thoughts by Charlie (20160307 09:49:56) 
Under Matryoshka Nesting Primes (in Numbers) Posted on 20160303 (11 Comments) 
 re(3): computer solution NEEDS FILTERING by Charlie (20160303 20:09:20) 
 re(2): computer solution NEEDS FILTERING by Charlie (20160303 20:05:25) 
 re(7): computer solution  the program by Charlie (20160303 15:29:17) 
 re(6): computer solution (continued) by Charlie (20160303 15:28:22) 
 re(5): computer solution (continued) by Charlie (20160303 15:27:27) 
 re(4): computer solution (continued) by Charlie (20160303 15:26:32) 
 re(3): computer solution (continued) by Charlie (20160303 15:24:53) 
 re(2): computer solution (continued) by Charlie (20160303 15:23:04) 
 re: computer solution (continued) by Charlie (20160303 15:22:06) 
 computer solution by Charlie (20160303 15:20:13) 
Under Cheese Cut Calculation (in Just Math) Posted on 20160303 (1 Comments) 
 computer solution by Charlie (20160303 11:31:38) 
Under Ring of triangles I (in Geometry) Posted on 20160302 (2 Comments) 
 computer solution  spoiler by Charlie (20160302 15:41:57) 
Under Arithmetic Roots (in Just Math) Posted on 20160302 (2 Comments) 
 solution with computer assist by Charlie (20160302 10:32:09) 
Under Light Beam Reflection (in Shapes) Posted on 20160301 (1 Comments) 
 solution by Charlie (20160301 15:22:28) 
Under 13 and 2 (in Numbers) Posted on 20160301 (6 Comments) 
 re: answer by Charlie (20160301 09:20:29) 
 computer still finds no solution by Charlie (20160301 09:17:38) 
Under On Track (in Just Math) Posted on 20160229 (7 Comments) 
 re: Misread the problem by Charlie (20160301 07:27:05) 
 re: Circular logic (spoiler) by Charlie (20160229 21:49:52) 
Under Miles to Kilometers (in General) Posted on 20160226 (3 Comments) 
 re: quick Excel solution by Charlie (20160226 10:07:44) 
 computer solution by Charlie (20160226 10:03:15) 
Under Initial Term Illation (in Sequences) Posted on 20160225 (2 Comments) 
 computer solution by Charlie (20160225 16:03:19) 
Under A NonReintersecting Tangent (in Calculus) Posted on 20160224 (1 Comments) 
 solution by Charlie (20160224 15:09:22) 
Under My four numbers (in Just Math) Posted on 20160224 (12 Comments) 
 re(2): solution  spoiler by Charlie (20160225 07:56:24) 
 solution  spoiler by Charlie (20160224 12:18:06) 
Under In a bar (in Probability) Posted on 20160223 (6 Comments) 
 re: Last Call by Charlie (20160224 10:22:27) 
 solution, with caveat by Charlie (20160223 14:03:10) 
Under Cheese Cut Conclusion (in Shapes) Posted on 20160223 (2 Comments) 
 it would seem... (spoiler) by Charlie (20160223 11:20:35) 
Under Geometric and Three Power Travail (in Sequences) Posted on 20160222 (2 Comments) 
 computer assisted solution by Charlie (20160222 12:17:23) 
Under Counting Ten Segment Paths (in General) Posted on 20160219 (6 Comments) 
 The basic set (rotations and reflections eliminated) by Charlie (20160219 20:48:00) 
 Missed a few beforenow added; As well as I can classify them by Charlie (20160219 14:59:11) 
 re(2): As many as I found by Charlie (20160219 14:37:35) 
 re: As many as I found by Charlie (20160219 14:09:29) 
 computer solution by Charlie (20160219 13:29:41) 
Under 25 * 1 (in Just Math) Posted on 20160218 (3 Comments) 
 re(2): solution  what about these?  back to the computer by Charlie (20160218 13:50:04) 
 solution by Charlie (20160218 10:55:02) 
Under Equal products and sums (in Just Math) Posted on 20160217 (4 Comments) 
 re: computer solution  a specific subset and the program by Charlie (20160217 20:19:11) 
 computer solution by Charlie (20160217 20:16:44) 
Under 123 Remainder Resolution (in Logic) Posted on 20160216 (12 Comments) 
 computer solution by Charlie (20160216 11:59:08) 
Under Big difference (in Numbers) Posted on 20160214 (4 Comments) 
 re(3): computer solutions by Charlie (20160214 20:05:51) 
 computer solutions by Charlie (20160214 15:03:30) 
Under Optimal Order (in Sequences) Posted on 20160210 (5 Comments) 
 re: This should work by Charlie (20160214 11:33:18) 
Under How high the moon tonight (in Numbers) Posted on 20160210 (1 Comments) 
 computer solution by Charlie (20160210 12:36:36) 
Under Consecutive Numbers and Subset Choice (in Just Math) Posted on 20160209 (6 Comments) 
 found the error in method 2 by Charlie (20160209 16:29:47) 
 on the other hand by Charlie (20160209 16:15:26) 
 2 computer solutions; the second is probably right by Charlie (20160209 16:06:19) 
Under Pumpkins 7 (in Just Math) Posted on 20160205 (2 Comments) 
 computer solution by Charlie (20160205 15:41:05) 
Under Evaluate further probabilities (in Probability) Posted on 20160203 (1 Comments) 
 computeraided solution by Charlie (20160203 11:18:01) 
Under Dascal triangle (in Numbers) Posted on 20160202 (8 Comments) 
 re(6): computer solution by Charlie (20160204 11:25:27) 
 re(5): computer solution by Charlie (20160204 10:46:56) 
 re(3): computer solution by Charlie (20160203 22:16:06) 
 re(2): computer solution by Charlie (20160203 22:02:24) 
 computer solution by Charlie (20160202 15:37:44) 
Under Find From First and Last (in Just Math) Posted on 20160202 (1 Comments) 
 computer solution by Charlie (20160202 11:27:00) 
Under Mille and Remainder Resolution (in Sequences) Posted on 20160201 (3 Comments) 
 spoiler solution; can it clue toward the intended method? by Charlie (20160202 07:56:22) 
Under N Nine Nuance (in Just Math) Posted on 20160129 (6 Comments) 
 re: possible solution by Charlie (20160129 11:11:04) 
 computer solution by Charlie (20160129 10:47:03) 
Under Erase the right 90 (in Numbers) Posted on 20160128 (5 Comments) 
 re: Sequence? by Charlie (20160129 11:33:30) 
 proof on the internet (spoiler) by Charlie (20160128 15:16:54) 
Under Last term zero (in Sequences) Posted on 20160128 (3 Comments) 
 re: Spoiler by Charlie (20160128 10:22:55) 
Under 5 cubes (in Numbers) Posted on 20160126 (1 Comments) 
 computer solution by Charlie (20160126 15:29:18) 
Under Evaluate probabilities (in Probability) Posted on 20160126 (3 Comments) 
 simple understanding, and randomization procedures by Charlie (20160126 11:37:16) 
Under Floor Function Query (in Just Math) Posted on 20160125 (1 Comments) 
 computer solution by Charlie (20160125 11:16:57) 
Under Pumpkins 6 (in Numbers) Posted on 20160122 (11 Comments) 
 re(3): Analytical solution (Bonus puzzle question) by Charlie (20160127 12:13:38) 
 computer solution by Charlie (20160122 15:26:29) 
Under Hypotenuse from Cone (in Shapes) Posted on 20160122 (2 Comments) 
 same solution numerically by Charlie (20160122 10:42:20) 
Under Binary Palindrome and Near Magic Square (in Just Math) Posted on 20160121 (1 Comments) 
 computer solution by Charlie (20160121 15:48:43) 
Under Find the next two numbers (in Sequences) Posted on 20160121 (4 Comments) 
 re: As Jer by Charlie (20160122 10:46:37) 
Under Detect my chosen coin (in Games) Posted on 20160119 (19 Comments) 
 re(3): Suggested wording for solution. by Charlie (20160204 11:09:09) 
 Suggested wording for solution. by Charlie (20160203 22:53:36) 
 re: The egg of Colubus by Charlie (20160126 13:24:59) 
Under 9 coins prob (in Weights and Scales) Posted on 20160118 (6 Comments) 
 re: Two preplanned weighings by Charlie (20160119 07:56:20) 
 Outline of a sample solution by Charlie (20160118 15:50:43) 
Under 6 coins (in Weights and Scales) Posted on 20160113 (10 Comments) 
 re(2): short solution  spoiler by Charlie (20160114 19:59:00) 
 re: short solution  spoiler by Charlie (20160113 19:29:50) 
 computer solution by Charlie (20160113 14:32:07) 
 computer attempt by Charlie (20160113 13:42:02) 
 re: Solution by Charlie (20160113 12:40:10) 
Under Expose ambiguity (in Logic) Posted on 20160113 (5 Comments) 
 one possible set by Charlie (20160113 09:11:38) 
Under Sine in a Circle (in Shapes) Posted on 20160111 (1 Comments) 
 solution by Charlie (20160111 15:13:50) 
Under Primevens and primeodds (in Numbers) Posted on 20160110 (8 Comments) 
 re(4): some stats extended by Charlie (20160111 22:06:41) 
 re(3): some stats extended by Charlie (20160111 07:39:15) 
 re: some stats extended by Charlie (20160110 17:56:21) 
 some stats by Charlie (20160110 14:12:52) 
Under Lost in the woods (in Just Math) Posted on 20160108 (12 Comments) 
 proposed solution by Charlie (20160108 15:43:08) 
Under Pumpkins 5 (in Weights and Scales) Posted on 20160106 (2 Comments) 
 computer solution by Charlie (20160106 11:25:21) 
Under Test #9 (in Word Problems) Posted on 20160105 (3 Comments) 
 from my word list by Charlie (20160105 11:30:24) 
Under Twenty deposits (in Just Math) Posted on 20160104 (4 Comments) 
 solution by Charlie (20160104 15:33:04) 
Under One out of Five (in Weights and Scales) Posted on 20160104 (2 Comments) 
 My solution is way too convoluted by Charlie (20160104 10:54:12) 
Under Arithmetic Triplet Ascertainment (in Just Math) Posted on 20160103 (1 Comments) 
 Heuristic solution by Charlie (20160103 10:57:44) 
Under Peaceful superqueens (in General) Posted on 20151231 (2 Comments) 
 computer solutions by Charlie (20151231 15:16:31) 
Under Infinite Illation Decision (in Just Math) Posted on 20151231 (3 Comments) 
 It seems... by Charlie (20151231 10:18:36) 
Under Monotonous integers (in Numbers) Posted on 20151230 (9 Comments) 
 solution, starting out with analytic by Charlie (20151230 13:51:37) 
Under A five letter word (in Word Problems) Posted on 20151228 (6 Comments) 
 computer solution by Charlie (20151228 21:04:38) 
Under From pie to numbers (in Numbers) Posted on 20151227 (14 Comments) 
 re: solutions for most numbers by Charlie (20151228 08:07:34) 
 re: one more by Charlie (20151227 15:57:44) 
 computer solution by Charlie (20151227 13:40:30) 
Under Binary Palindrome Square Magic (in Just Math) Posted on 20151224 (11 Comments) 
 re: Magic Squares by Charlie (20151226 07:50:24) 
 re: No Subject by Charlie (20151225 08:11:02) 
Under Ten cities (in Cryptography) Posted on 20151224 (1 Comments) 
 computer solution by Charlie (20151224 10:48:08) 
Under Power and Digit Poser (in Just Math) Posted on 20151223 (2 Comments) 
 solution by Charlie (20151223 11:01:08) 
Under Pentagon and Reflection Poser (in Shapes) Posted on 20151222 (1 Comments) 
 Graphing calculator solution by Charlie (20151222 15:10:33) 
Under 52=1 (in Word Problems) Posted on 20151221 (5 Comments) 
 computer solution by Charlie (20151221 10:29:33) 
Under 80 (in Numbers) Posted on 20151219 (3 Comments) 
 computer solutions for all but 2359 by Charlie (20151219 13:15:36) 
Under Some sequences! (in Sequences) Posted on 20151218 (1 Comments) 
 computer solution by Charlie (20151218 11:00:18) 
Under Distinct Triangle Determination (in Shapes) Posted on 20151216 (3 Comments) 
 re(2): computer solution (Spoiler) by Charlie (20151217 11:38:36) 
 computer solution by Charlie (20151216 15:13:21) 
Under Protecting the fleet Parts C. & D. (in Geometry) Posted on 20151215 (2 Comments) 
 solution by Charlie (20151215 18:58:34) 
Under A peculiar pandigital (in Numbers) Posted on 20151214 (2 Comments) 
 All of them by Charlie (20151214 19:06:38) 
Under Protecting the fleet Parts A. & B. (in Geometry) Posted on 20151214 (4 Comments) 
 re(2): solutions by Charlie (20151215 10:57:18) 
 solutions by Charlie (20151214 15:04:04) 
Under Four Digit and Two Digit Treat (in Just Math) Posted on 20151213 (1 Comments) 
 computer solution by Charlie (20151213 18:21:48) 
Under Using a standard deck (in Numbers) Posted on 20151211 (2 Comments) 
 re: Solution by Charlie (20151212 08:09:11) 
Under A peculiar triangular number (in Numbers) Posted on 20151210 (2 Comments) 
 computer solution (spoiler) by Charlie (20151210 18:00:00) 
Under Triple Letter Occurrence, Twice! (in Word Problems) Posted on 20151210 (3 Comments) 
 computer solution 6, 7 and 8letter words by Charlie (20151210 09:13:26) 
Under Two Light Coins (in Weights and Scales) Posted on 20151209 (1 Comments) 
 solution by Charlie (20151209 19:44:31) 
Under Hold your horses (in General) Posted on 20151209 (3 Comments) 
 solution by Charlie (20151209 13:07:08) 
Under A special shortlist (in Numbers) Posted on 20151208 (3 Comments) 
 solution with computergenerated list by Charlie (20151208 10:45:22) 
Under Fibonaccish ratio (in Sequences) Posted on 20151207 (3 Comments) 
 re(2): solution by Charlie (20151207 19:54:13) 
 solution by Charlie (20151207 18:01:58) 
Under Cos Case Concern (in Shapes) Posted on 20151206 (4 Comments) 
 re: Two solutions by Charlie (20151206 15:08:11) 
Under List of pairs (in Just Math) Posted on 20151204 (3 Comments) 
 computer solution  first eight pairs by Charlie (20151204 11:27:37) 
Under A Math Problem (in Just Math) Posted on 20151203 (6 Comments) 
 computer solution of a way that works by Charlie (20151203 15:28:25) 
Under Get the right product (in Just Math) Posted on 20151201 (5 Comments) 
 Possible for 9 by Charlie (20151202 11:11:35) 
 computer verification it doesn't work for n=9 by Charlie (20151202 10:52:59) 
Under Daylight Saving (in Cryptography) Posted on 20151201 (4 Comments) 
 re: Wrong Answer (spoiler) by Charlie (20151201 11:20:44) 
Under Increasing sequences (in Just Math) Posted on 20151130 (3 Comments) 
 computer solution by Charlie (20151130 14:48:11) 
Under Table's peculiarity (in Just Math) Posted on 20151129 (6 Comments) 
 re(3): Example needed by Charlie (20151130 19:09:30) 
 re: Example needed by Charlie (20151130 08:24:58) 
Under 123 Square Settlement (in Just Math) Posted on 20151127 (3 Comments) 
 re(2): computer solution  smallest nine values by Charlie (20151128 08:58:06) 
 computer solution  smallest nine values by Charlie (20151127 15:30:18) 
Under Root factorial (in Numbers) Posted on 20151125 (1 Comments) 
 thoughts by Charlie (20151125 15:01:26) 
Under Square in a notched square (in Geometry) Posted on 20151125 (3 Comments) 
 A method of calculationneeds simplification. by Charlie (20151125 10:22:26) 
Under Biggest and smallest (in Just Math) Posted on 20151124 (2 Comments) 
 computer solution by Charlie (20151124 10:34:15) 
Under Summing Consecutive Terms and Pair Determination (in Sequences) Posted on 20151121 (3 Comments) 
 computer solution by Charlie (20151121 13:11:45) 
Under Generalizing II (in Sequences) Posted on 20151120 (2 Comments) 
 a way to calculate by Charlie (20151120 14:45:19) 
Under Counting correctly (in Numbers) Posted on 20151119 (3 Comments) 
 re(2): analytic solution, subject to error by Charlie (20151119 13:31:43) 
 analytic solution, subject to error by Charlie (20151119 11:13:05) 
Under If you go (in Numbers) Posted on 20151118 (2 Comments) 
 computer solution by Charlie (20151118 16:12:10) 
Under Upgrading procedure (in Just Math) Posted on 20151117 (1 Comments) 
 computer solution by Charlie (20151117 18:57:42) 
Under A nontrivial progression (in Numbers) Posted on 20151117 (7 Comments) 
 re(2): answers revisited by Charlie (20151118 11:23:18) 
 d2 answers by Charlie (20151117 10:37:59) 
Under Cryptajoke XII (in Cryptography) Posted on 20151116 (2 Comments) 
 solution (spoiler) by Charlie (20151116 12:31:12) 
Under 9letter word II (in Sequences) Posted on 20151113 (1 Comments) 
 computer aided solution by Charlie (20151113 15:49:41) 
Under 6 or less liars (in Liars and Knights) Posted on 20151113 (16 Comments) 
 re(3): Summing up  spoiler by Charlie (20151117 10:57:38) 
 re(4): solution by Charlie (20151115 18:39:50) 
 solution by Charlie (20151113 10:50:54) 
Under 3c+2v (in Word Problems) Posted on 20151112 (3 Comments) 
 computer solution by Charlie (20151112 13:23:55) 
Under Two sisters (in Famous Riddles) Posted on 20151112 (2 Comments) 
 re: Possible solution by Charlie (20151112 10:47:27) 
Under Sphere Intersections (in Geometry) Posted on 20151111 (4 Comments) 
 My thinking on it. by Charlie (20151111 15:28:50) 
Under Count the palindromes (in Just Math) Posted on 20151111 (7 Comments) 
 computer solution by Charlie (20151111 10:27:25) 
Under Wise saw (in General) Posted on 20151110 (3 Comments) 
 re: 2/3 solution (spoiler) by Charlie (20151110 14:04:57) 
Under Tiling and counting (in Numbers) Posted on 20151110 (2 Comments) 
 He's back by Charlie (20151110 10:49:22) 
Under ….to skin a cat (in Logic) Posted on 20151109 (5 Comments) 
 re(3): The one that seems obvious by Charlie (20151109 21:54:27) 
 The one that seems obvious by Charlie (20151109 12:38:10) 
Under Cryptajoke XI (in Cryptography) Posted on 20151109 (1 Comments) 
 spoilers by Charlie (20151109 10:32:52) 
Under Cons and vows (in Word Problems) Posted on 20151106 (6 Comments) 
 #3 by Charlie (20151109 07:55:24) 
Under Four factors (in Just Math) Posted on 20151106 (2 Comments) 
 by induction, not rigorous by Charlie (20151106 09:56:37) 
Under Matching pairs II (in Word Problems) Posted on 20151105 (3 Comments) 
 re(2): most paired up, except the redundant ones by Charlie (20151106 07:46:30) 
 most paired up by Charlie (20151105 15:42:36) 
Under An interesting matrix (in Sequences) Posted on 20151105 (3 Comments) 
 re(2): solution  calculations by computer by Charlie (20151105 19:21:30) 
 solution  calculations by computer by Charlie (20151105 10:06:29) 
Under 10 4 7 10 (in Just Math) Posted on 20151103 (2 Comments) 
 computer solutions by Charlie (20151103 14:31:07) 
Under Two and only two (in Just Math) Posted on 20151103 (4 Comments) 
 re: a quick look by Charlie (20151103 14:58:18) 
 a quick look by Charlie (20151103 08:50:28) 
Under Seven numbers for seven words (in Cryptography) Posted on 20151102 (1 Comments) 
 computer assisted solution by Charlie (20151102 14:48:09) 
Under Diophantine Linear and Quadratic (in Just Math) Posted on 20151101 (4 Comments) 
 computer solution by Charlie (20151101 13:26:19) 
 re: Analytical solution (spoiler) by Charlie (20151101 13:04:04) 
Under Incredible, but solvable (in Just Math) Posted on 20151030 (11 Comments) 
 re: @ Charlie an explanation and a question by Charlie (20151031 21:23:38) 
 re(5): comp. aided solution  HINT by Charlie (20151031 08:07:16) 
 re(4): comp. aided solution  HINT by Charlie (20151031 07:59:05) 
 re(2): computer aided solution  continued by Charlie (20151030 15:28:09) 
 re: computer aided solution  continued by Charlie (20151030 15:26:16) 
 computer aided solution by Charlie (20151030 15:23:50) 
Under A plural of a plural (in Word Problems) Posted on 20151030 (5 Comments) 
 What moderns do with Latin by Charlie (20151030 10:25:35) 
Under Term Sum Settlement (in Sequences) Posted on 20151029 (3 Comments) 
 Well, it could have been solved manually, but... by Charlie (20151029 14:31:45) 
Under No peace (in Word Problems) Posted on 20151029 (4 Comments) 
 re: Some clarifications by Charlie (20151030 10:29:09) 
 Most, but not all by Charlie (20151029 09:49:17) 
Under Some questions of abundance (in Just Math) Posted on 20151028 (3 Comments) 
 re(2): proposed solution / counterexample by Charlie (20151028 13:06:43) 
 proposed solution by Charlie (20151028 10:38:43) 
Under Real Number Resolution 2 (in Just Math) Posted on 20151027 (1 Comments) 
 proposed solution by Charlie (20151027 16:00:01) 
Under Numbered Letters IV (in Word Problems) Posted on 20151026 (2 Comments) 
 computer solution by Charlie (20151026 15:37:59) 
Under Magic matrix (in Just Math) Posted on 20151026 (1 Comments) 
 computer solution by Charlie (20151026 10:55:37) 
Under Sum Equality and Perfect Square (in Just Math) Posted on 20151025 (2 Comments) 
 computer solution by Charlie (20151025 14:44:58) 
Under Must differ by 3 (in Just Math) Posted on 20151023 (3 Comments) 
 computer proof by Charlie (20151023 13:03:39) 
Under Extend the list (in Word Problems) Posted on 20151022 (2 Comments) 
 some more by Charlie (20151022 21:46:42) 
Under More ones (in Just Math) Posted on 20151021 (1 Comments) 
 computer solution by Charlie (20151021 15:27:42) 
Under Distinct Values Determination (in Just Math) Posted on 20151020 (4 Comments) 
 the missing values by Charlie (20151020 11:44:21) 
 computer solution differs by Charlie (20151020 11:25:46) 
Under Factorials & factorions (in Numbers) Posted on 20151019 (2 Comments) 
 computer solution by Charlie (20151019 14:42:49) 
Under Will you find it? (in Cryptography) Posted on 20151019 (2 Comments) 
 It, or them? by Charlie (20151019 14:39:45) 
Under Generalizing (in Geometry) Posted on 20151016 (2 Comments) 
 just offhand... by Charlie (20151016 22:28:38) 
Under Palindromes and Divisibility (in Just Math) Posted on 20151016 (3 Comments) 
 re: analytic solution by Charlie (20151016 14:16:53) 
 computer solution by Charlie (20151016 10:50:58) 
Under Oblong Difference Observation (in Just Math) Posted on 20151015 (3 Comments) 
 two more solutions (computer solutions) by Charlie (20151015 13:58:20) 
Under Same digits  3 cubes (in Numbers) Posted on 20151014 (1 Comments) 
 computer solution by Charlie (20151014 10:45:14) 
Under Triangular and Square Settlement (in Just Math) Posted on 20151013 (7 Comments) 
 extended list by Charlie (20151014 08:09:55) 
 computer solution by Charlie (20151013 15:34:15) 
Under Integer Count Illation (in Just Math) Posted on 20151012 (1 Comments) 
 solution by Charlie (20151012 15:29:02) 
Under Count them correctly (in Numbers) Posted on 20151012 (2 Comments) 
 same answer by Charlie (20151012 10:42:20) 
Under Permutations count redux (in Numbers) Posted on 20151009 (1 Comments) 
 first simpler consideration by Charlie (20151012 13:46:19) 
Under Integer Function Finding (in Just Math) Posted on 20151009 (1 Comments) 
 computer guided guess by Charlie (20151009 11:22:43) 
Under sum of digits and 100th term (in Sequences) Posted on 20151008 (3 Comments) 
 I did miss something in the previous post. by Charlie (20151009 08:27:51) 
 I've probably miscounted but here goes. by Charlie (20151008 21:24:23) 
Under 8 digit rhyme (in Cryptography) Posted on 20151008 (1 Comments) 
 solution (spoiler) by Charlie (20151008 10:44:23) 
Under Non zero product (in Just Math) Posted on 20151007 (1 Comments) 
 computer assisted calculation by Charlie (20151007 20:02:02) 
Under Digit sum and digit product equality (in Just Math) Posted on 20151006 (2 Comments) 
 computer aided solution by Charlie (20151006 20:28:06) 
Under Random Choice (in Probability) Posted on 20151002 (1 Comments) 
 solution by Charlie (20151002 10:25:48) 
Under Permutations count (in Numbers) Posted on 20151001 (10 Comments) 
 I guess simplicity is in the mind of the user by Charlie (20151002 09:57:08) 
 solution by Charlie (20151001 16:02:09) 
Under Phrase find ponder (in Word Problems) Posted on 20151001 (6 Comments) 
 re(2): first undoubtedly incorrect thoughts by Charlie (20151001 16:11:55) 
Under Extreme Sum Settlement (in Just Math) Posted on 20150928 (4 Comments) 
 re: Solution (barring errors) by Charlie (20150928 16:02:04) 
 the computer doesn't tire of writing the numbers by Charlie (20150928 15:56:47) 
Under Cryptajoke IX (in Cryptography) Posted on 20150928 (2 Comments) 
 way by Charlie (20150928 10:31:35) 
Under 9letter word (in Numbers) Posted on 20150925 (6 Comments) 
 re(2): computer solutions by Charlie (20150926 07:35:38) 
 computer solutions by Charlie (20150925 16:15:56) 
Under Quit as a winner (in Games) Posted on 20150924 (8 Comments) 
 re(2): some research (spoiler) by Charlie (20150924 18:35:16) 
 some research (spoiler) by Charlie (20150924 16:26:17) 
 further fine tuning by Charlie (20150924 15:47:31) 
 re: computer exploration by Charlie (20150924 15:38:36) 
 computer exploration by Charlie (20150924 15:05:47) 
Under Cheryl's bday (in Logic) Posted on 20150924 (2 Comments) 
 solution by Charlie (20150924 10:16:36) 
Under Three brothers (in Just Math) Posted on 20150923 (1 Comments) 
 solution by Charlie (20150923 11:25:20) 
Under Less Than 2015 (in Just Math) Posted on 20150922 (3 Comments) 
 re(2): computer solution  trying to explain it by Charlie (20150923 15:56:46) 
 computer solution by Charlie (20150922 17:23:10) 
Under Hexakosioihexekontahexaphobia (in General) Posted on 20150922 (3 Comments) 
 It seems... by Charlie (20150922 10:02:04) 
Under Rook Placement (in Games) Posted on 20150921 (5 Comments) 
 re: Detailed solution (SPOILER) by Charlie (20150926 07:51:35) 
Under Three Power and Product Divisibility (in Just Math) Posted on 20150919 (2 Comments) 
 re: computer exploration by Charlie (20150920 18:58:36) 
 computer exploration by Charlie (20150920 07:56:20) 
Under Expression Product Exercise (in Just Math) Posted on 20150918 (5 Comments) 
 even UBASIC can get only to 8 in direct calculation by Charlie (20150920 08:23:36) 
 computer exploration  far from a proof by Charlie (20150918 12:37:49) 
Under 2 easy cryptajokes (VIII) (in Cryptography) Posted on 20150918 (3 Comments) 
 caught the thief  not the fish by Charlie (20150918 09:21:00) 
Under Some definite results (in Numbers) Posted on 20150917 (5 Comments) 
 re: nonanalytic solution by Charlie (20150918 08:27:49) 
Under Marissa's and Melissa's birthdays (in Logic) Posted on 20150917 (1 Comments) 
 solution with some computer assistance by Charlie (20150917 12:20:00) 
Under Check divisibility (in Numbers) Posted on 20150916 (5 Comments) 
 re(2): computer exploration (probable spoiler) by Charlie (20150917 07:47:38) 
 computer exploration (probable spoiler) by Charlie (20150916 16:13:12) 
Under Coordinating arrival (in Just Math) Posted on 20150915 (2 Comments) 
 solution by Charlie (20150915 10:57:22) 
Under C reverses into F (in Numbers) Posted on 20150914 (10 Comments) 
 re(2): computer exploration ....... att ALL by Charlie (20150915 07:51:08) 
 re: A valiant attempt by Charlie (20150914 20:30:42) 
 computer exploration by Charlie (20150914 16:19:42) 
Under Square Sum and Square Multiple (in Just Math) Posted on 20150913 (2 Comments) 
 An extended list  Using Visual Basic by Charlie (20150913 14:54:43) 
Under Prime Ratio Possibility (in Just Math) Posted on 20150911 (3 Comments) 
 solution by Charlie (20150911 11:04:22) 
Under Fair? (in Games) Posted on 20150910 (10 Comments) 
 re: A's strategy by Charlie (20150917 19:29:03) 
 re: Solution by Charlie (20150914 07:50:09) 
 re(2): solution by Charlie (20150911 07:40:14) 
 solution by Charlie (20150910 17:16:31) 
Under Oneliners (in General) Posted on 20150909 (4 Comments) 
 oh, yes; forgot this by Charlie (20150909 20:01:53) 
 mostly computer solution by Charlie (20150909 15:49:58) 
Under Threesyllable word (in Tricks) Posted on 20150907 (3 Comments) 
 probably... by Charlie (20150907 12:38:11) 
Under Quadratic and Quartic Query (in Just Math) Posted on 20150906 (3 Comments) 
 computer solution  the 33 lowest. by Charlie (20150906 14:13:34) 
Under Simultaneous Pythagorean Poser 2 (in Just Math) Posted on 20150905 (4 Comments) 
 corrected computer solution by Charlie (20150906 08:46:20) 
 computer solution by Charlie (20150905 12:48:30) 
Under Six countries (in General) Posted on 20150904 (8 Comments) 
 re: Alternate solution by Charlie (20150904 18:22:38) 
 re(3): If only! (more of a spoiler) by Charlie (20150904 15:32:13) 
 re: If only! (more of a spoiler) by Charlie (20150904 10:56:00) 
Under Not Variety, but... (in Word Problems) Posted on 20150903 (4 Comments) 
 re(2): Sorry, wrong answers (spoiler) by Charlie (20150904 07:28:20) 
Under Digit Product Puzzle (in Probability) Posted on 20150903 (3 Comments) 
 re(2): analytic solution  corrected by Charlie (20150903 16:32:01) 
 analytic solution by Charlie (20150903 11:06:44) 
Under Arithmetic and Power Puzzle (in Just Math) Posted on 20150902 (2 Comments) 
 computer exploration by Charlie (20150902 15:08:39) 
Under Surprising answer (in Probability) Posted on 20150902 (6 Comments) 
 solution by Charlie (20150902 11:45:16) 
Under Muchos idiomas (in Word Problems) Posted on 20150901 (1 Comments) 
 computer solution by Charlie (20150901 16:09:14) 
Under Convex Hexagon and Ratio Product (in Shapes) Posted on 20150901 (3 Comments) 
 re(2): metasolution by Charlie (20150901 15:56:20) 
 metasolution by Charlie (20150901 09:59:46) 
Under Cryptajoke VII (in Word Problems) Posted on 20150831 (2 Comments) 
 solution (spoiler) by Charlie (20150831 15:46:48) 
Under Homophone Hunt 2 (in Word Problems) Posted on 20150831 (4 Comments) 
 another by Charlie (20150831 09:57:39) 
Under A Fibo quadruplet (in Numbers) Posted on 20150828 (1 Comments) 
 solution by Charlie (20150828 11:05:46) 
Under What am I ? (in Riddles) Posted on 20150827 (3 Comments) 
 You are... by Charlie (20150827 09:49:41) 
Under Divide et impera part two (in Numbers) Posted on 20150826 (2 Comments) 
 Much data but no proofcomputer exploration by Charlie (20150826 12:58:28) 
Under Only 2 answers (in Numbers) Posted on 20150826 (3 Comments) 
 re(2): computer solution by Charlie (20150826 14:30:25) 
 computer solution by Charlie (20150826 11:17:03) 
Under Hockey pucks (in Logic) Posted on 20150825 (1 Comments) 
 solution by Charlie (20150825 14:31:58) 
Under Year and Perfect Square Puzzle (in Just Math) Posted on 20150822 (2 Comments) 
 computer solution by Charlie (20150822 15:55:34) 
Under Numbers in pi (in Numbers) Posted on 20150821 (3 Comments) 
 computer solution by Charlie (20150821 10:34:23) 
Under Three coins (in Probability) Posted on 20150820 (10 Comments) 
 re(6): question by Charlie (20150823 15:08:46) 
 re(4): question by Charlie (20150822 07:40:37) 
 re(2): question by Charlie (20150820 15:34:30) 
 question by Charlie (20150820 13:48:19) 
Under Visit USA (in General) Posted on 20150820 (9 Comments) 
 If the goal is... by Charlie (20150820 10:42:57) 
 re: solution by Charlie (20150820 10:39:14) 
Under A selfworking card trick (in Tricks) Posted on 20150819 (2 Comments) 
 solution by Charlie (20150819 15:17:04) 
Under This or that? (in Probability) Posted on 20150819 (4 Comments) 
 My take on it by Charlie (20150819 10:03:55) 
Under Divide et impera (in Numbers) Posted on 20150818 (2 Comments) 
 three computer solutions by Charlie (20150818 12:02:45) 
Under Perfect Square Digit (in Just Math) Posted on 20150817 (2 Comments) 
 Can't find any under 10 billion by Charlie (20150818 08:01:58) 
Under Ez & true (in Riddles) Posted on 20150817 (1 Comments) 
 The saying by Charlie (20150818 07:54:46) 
Under Nonperfect Cube Root Sum (in Just Math) Posted on 20150814 (6 Comments) 
 re: An idea by Charlie (20150814 13:28:01) 
Under Rooting for 2015 (in Just Math) Posted on 20150814 (3 Comments) 
 confirmed solution by Charlie (20150814 10:22:22) 
Under Arithmetic Product Puzzle (in Sequences) Posted on 20150813 (1 Comments) 
 computer solution by Charlie (20150813 14:52:35) 
Under Eight efficient blacksmiths (in Just Math) Posted on 20150813 (4 Comments) 
 re: solution by Charlie (20150813 09:31:05) 
 solution by Charlie (20150813 09:26:03) 
Under Power and Divisibility Puzzle (in Just Math) Posted on 20150812 (6 Comments) 
 computer solution by Charlie (20150812 15:50:13) 
Under Simpler probability problem? (in Probability) Posted on 20150811 (14 Comments) 
 re(2): I think I'm beginning to understand what Ady's saying by Charlie (20150813 09:20:42) 
 I think I'm beginning to understand what Ady's saying by Charlie (20150812 19:36:15) 
 re(4): solution by Charlie (20150812 14:46:30) 
 simulation of 100 trials by Charlie (20150812 12:27:43) 
 re(4): solution by Charlie (20150812 12:08:07) 
 re: re. difficulty level by Charlie (20150812 08:57:18) 
 re(2): solution by Charlie (20150812 08:42:24) 
 solution by Charlie (20150811 15:56:22) 
Under Positive Integer and Power Puzzle (in Logic) Posted on 20150810 (2 Comments) 
 computer solution by Charlie (20150810 19:23:20) 
Under Oddday (in Numbers) Posted on 20150810 (4 Comments) 
 re: No math on vacation by Charlie (20150811 15:55:16) 
Under Clever counting (in Numbers) Posted on 20150807 (6 Comments) 
 re: Part b researched solution by Charlie (20150808 08:20:18) 
 Part b researched solution by Charlie (20150807 23:04:25) 
 re(2): part a computer solution wrong? by Charlie (20150807 22:27:09) 
 part a computer solution by Charlie (20150807 18:59:07) 
Under Largest pandigital prime. (in Numbers) Posted on 20150807 (1 Comments) 
 computer solution by Charlie (20150807 12:21:30) 
Under one 3 or one 7 puzzle (in Just Math) Posted on 20150806 (3 Comments) 
 computer solution by Charlie (20150806 13:30:07) 
Under Factorial Ratio Sum Puzzle (in Calculus) Posted on 20150804 (3 Comments) 
 computer solution: It quickly converges by Charlie (20150804 09:14:25) 
Under Odd and Even 2 (in Just Math) Posted on 20150803 (4 Comments) 
 computer solution by Charlie (20150803 10:15:05) 
 re: solution by Charlie (20150803 09:53:39) 
Under Ocean Anagram – Not (in Word Problems) Posted on 20150731 (4 Comments) 
 re: a d1 solution by Charlie (20150731 09:12:36) 
Under Best guess (in Probability) Posted on 20150730 (3 Comments) 
 re(2): computer solution  a mathematicaltype formula by Charlie (20150801 08:24:47) 
 computer solution by Charlie (20150730 14:56:26) 
Under Red, White, and Blue (in Logic) Posted on 20150729 (4 Comments) 
 computer proof by Charlie (20150729 14:35:28) 
Under Perfect Power Puzzle (in Just Math) Posted on 20150729 (5 Comments) 
 re: full solution........................SPOILER by Charlie (20150729 10:16:47) 
 re: full solution........................SPOILER by Charlie (20150729 10:00:18) 
 computer solution by Charlie (20150729 09:58:22) 
Under No letters (in Cryptography) Posted on 20150727 (3 Comments) 
 I learn to initialize arrays in VB 5 by Charlie (20150727 14:20:25) 
Under Integer Triangle Side Puzzle (in Shapes) Posted on 20150726 (1 Comments) 
 computer solution by Charlie (20150726 10:56:57) 
Under Linear and Quadratic Sum Puzzle (in Just Math) Posted on 20150725 (3 Comments) 
 re: computeraided solution by Charlie (20150725 13:30:24) 
 computeraided solution by Charlie (20150725 13:22:55) 
Under Nine trolls (in Just Math) Posted on 20150723 (9 Comments) 
 re(2): computer solution by Charlie (20150723 12:22:03) 
 re: computer solution by Charlie (20150723 12:15:34) 
 computer solution by Charlie (20150723 11:57:51) 
 re: computer solution by Charlie (20150723 11:37:25) 
 only a start by Charlie (20150723 08:27:41) 
Under One of the countries (in Word Problems) Posted on 20150722 (2 Comments) 
 computer solution by Charlie (20150722 15:46:50) 
Under Yearly Division (in Just Math) Posted on 20150722 (1 Comments) 
 solution by Charlie (20150722 13:39:52) 
Under Initial Term Identification (in Sequences) Posted on 20150721 (3 Comments) 
 electronically computed by Charlie (20150721 15:08:06) 
Under Phrase Reconstruction Puzzle (in Word Problems) Posted on 20150721 (5 Comments) 
 re: What's the point? by Charlie (20150722 08:14:53) 
 answer by Charlie (20150721 11:09:44) 
Under Guessing suit (in Probability) Posted on 20150720 (13 Comments) 
 simulation by Charlie (20150721 10:25:25) 
 re: senseless task ! by Charlie (20150720 11:09:49) 
Under Picking numbers (in Probability) Posted on 20150717 (7 Comments) 
 re: Solution by Charlie (20150729 10:22:14) 
 computer solution by Charlie (20150717 15:11:20) 
 re: Analytical Solution (spoiler) by Charlie (20150717 15:08:32) 
Under Pasta wrestling (in Word Problems) Posted on 20150717 (1 Comments) 
 solution by Charlie (20150717 10:53:58) 
Under Smallest Perfect Cube Puzzle (in Just Math) Posted on 20150715 (2 Comments) 
 simulation of manual trials by Charlie (20150715 16:19:57) 
 computer assisted solution by Charlie (20150715 16:03:18) 
Under Pieces of eight (in Just Math) Posted on 20150715 (2 Comments) 
 some computer aid by Charlie (20150715 10:46:46) 
Under Powers of Ten (in Sequences) Posted on 20150714 (7 Comments) 
 re: Pwerful answer (spoiler) by Charlie (20150714 16:14:00) 
Under Bean coloring (in Probability) Posted on 20150713 (11 Comments) 
 re(3):Correcting My previous analytical solution by Charlie (20150715 21:42:51) 
 re(2):Correcting My previous analytical solution by Charlie (20150715 16:39:37) 
 Further exact values using UBASIC by Charlie (20150714 10:42:50) 
 re: computer aided solution by Charlie (20150713 19:44:27) 
 computer aided solution by Charlie (20150713 18:49:13) 
Under Beginning and End (in Just Math) Posted on 20150711 (6 Comments) 
 The Fibonacci connection by Charlie (20150712 08:52:04) 
 More precision with UBASIC computer program by Charlie (20150711 09:36:36) 
Under Long Reverse Rigor (in Word Problems) Posted on 20150710 (3 Comments) 
 words with 15 or more letters, with lengths by Charlie (20150710 19:14:53) 
Under Inverse Quadratic Sum Puzzle (in Just Math) Posted on 20150709 (1 Comments) 
 steps with some internet help by Charlie (20150709 12:56:06) 
Under Inverse Expression Exercise (in Just Math) Posted on 20150707 (1 Comments) 
 probabile solution by Charlie (20150707 16:50:57) 
Under From ab to yz (in Word Problems) Posted on 20150706 (5 Comments) 
 re: computer solution by Charlie (20150706 16:11:55) 
 computer solution by Charlie (20150706 15:57:15) 
Under Simultaneous Pythagorean Poser (in Just Math) Posted on 20150704 (4 Comments) 
 re: solution by Charlie (20150704 16:00:25) 
Under Quite a triplet (in Numbers) Posted on 20150702 (10 Comments) 
 re(4): computer solution  prolonged search by Charlie (20150704 08:06:14) 
 re(2): computer solution  prolonged search by Charlie (20150703 11:36:27) 
 re: more info by Charlie (20150703 07:56:45) 
 computer solution by Charlie (20150702 15:49:37) 
Under Chinatown's problem (in Numbers) Posted on 20150702 (3 Comments) 
 solution with some explanation by Charlie (20150702 09:19:53) 
Under One 1 to Six 6's (in Probability) Posted on 20150701 (14 Comments) 
 re: Solution for n=2 and 3, and some observations by Charlie (20150730 09:11:20) 
 re(4): computer aided solution by Charlie (20150702 15:41:55) 
 re(2): computer aided solution by Charlie (20150702 15:34:07) 
 re(3): computer aided solution by Charlie (20150702 09:39:18) 
 re(2): computer aided solution by Charlie (20150702 09:09:49) 
 computer aided solution by Charlie (20150701 17:00:33) 
Under Mathematical Term (in Word Problems) Posted on 20150701 (4 Comments) 
 answer by Charlie (20150701 10:15:27) 
Under More than linear (in Just Math) Posted on 20150630 (1 Comments) 
 computer solution by Charlie (20150630 16:19:44) 
Under How many subsets? (in Just Math) Posted on 20150629 (3 Comments) 
 computer solution by Charlie (20150629 19:43:37) 
Under Ship Anagram  Not (in Word Problems) Posted on 20150629 (4 Comments) 
 re(2): Ahoy! (spoiler) by Charlie (20150630 09:16:36) 
Under Factorial creates prime (in Numbers) Posted on 20150626 (5 Comments) 
 Would it help if ... by Charlie (20150626 11:38:46) 
Under It is not 8^5 (in Numbers) Posted on 20150624 (3 Comments) 
 re: Solution (Spoiler) by Charlie (20150624 09:48:19) 
Under Cubic and Factorial Puzzle (in Just Math) Posted on 20150623 (1 Comments) 
 computer solution by Charlie (20150623 11:39:47) 
Under Find the lowest n (in Numbers) Posted on 20150622 (4 Comments) 
 re: A few other n by Charlie (20150623 07:24:20) 
Under All possible integer determination (in Just Math) Posted on 20150620 (1 Comments) 
 computer solution by Charlie (20150620 14:44:33) 
Under 7 idiomatic phrases (in Word Problems) Posted on 20150617 (2 Comments) 
 a start by Charlie (20150617 13:55:42) 
Under One triplet out (in Numbers) Posted on 20150616 (3 Comments) 
 computer solution by Charlie (20150616 15:05:58) 
Under Expression Quotient Puzzle (in Just Math) Posted on 20150616 (3 Comments) 
 re: Some, maybe all by Charlie (20150616 12:08:54) 
Under On his way to fitness (in Just Math) Posted on 20150615 (10 Comments) 
 Using calculator app and Excel by Charlie (20150616 08:59:42) 
 re: A geometrical approach by Charlie (20150615 14:45:15) 
Under Bivariate Quadratic Puzzle (in Just Math) Posted on 20150614 (2 Comments) 
 computer exploration gives probable solution by Charlie (20150614 11:28:53) 
Under Yearly Diophantine Puzzle (in Just Math) Posted on 20150612 (1 Comments) 
 computer solution by Charlie (20150612 15:23:04) 
Under p^10 is special (in Numbers) Posted on 20150612 (1 Comments) 
 computer solution by Charlie (20150612 11:01:57) 
Under Lefties and righties (in Logic) Posted on 20150610 (2 Comments) 
 solution by Charlie (20150610 11:11:41) 
Under Cube root sum equality puzzle (in Just Math) Posted on 20150609 (2 Comments) 
 computer solution by Charlie (20150609 15:54:15) 
Under A chain of five (in Word Problems) Posted on 20150608 (2 Comments) 
 computer solution by Charlie (20150608 21:59:37) 
Under Eleven Letter Exercise (in Word Problems) Posted on 20150608 (3 Comments) 
 re(2): answer by Charlie (20150611 08:45:02) 
 re: answer by Charlie (20150608 10:20:54) 
Under Find Points, Maximise Ratio (in Shapes) Posted on 20150605 (6 Comments) 
 re(3): solution (continued) by Charlie (20150605 16:02:17) 
 re(2): solution (continued) by Charlie (20150605 16:00:52) 
 re: solution by Charlie (20150605 15:59:04) 
 computer finding by Charlie (20150605 15:51:30) 
Under 5 76993 408621 (in Numbers) Posted on 20150604 (3 Comments) 
 computer aided solution by Charlie (20150604 14:28:11) 
Under Three Quotients and Integer Puzzle (in Just Math) Posted on 20150603 (4 Comments) 
 I get (with computer program) by Charlie (20150603 15:56:14) 
Under Logical, or not? (in General) Posted on 20150601 (4 Comments) 
 solution by Charlie (20150601 12:35:04) 
Under Just vowels (in General) Posted on 20150529 (9 Comments) 
 My take on it by Charlie (20150529 15:56:40) 
Under Rational or not? (in Just Math) Posted on 20150529 (5 Comments) 
 re(2): solution by Charlie (20150531 14:09:48) 
 solution by Charlie (20150529 10:09:45) 
Under No neighbors allowed (in Numbers) Posted on 20150522 (2 Comments) 
 solution by Charlie (20150522 15:37:25) 
Under One, two, eight etc (in Numbers) Posted on 20150522 (2 Comments) 
 adding overbars for large squares by Charlie (20150522 13:05:09) 
 computer solution not considering overlining for large squares by Charlie (20150522 10:52:38) 
Under Cuboid Concern (in Shapes) Posted on 20150521 (2 Comments) 
 If I didn't make any mistakes along the way by Charlie (20150521 16:16:16) 
Under Back to throne (in Probability) Posted on 20150521 (3 Comments) 
 computer exploration and solution by Charlie (20150521 10:34:51) 
Under Three consecutive letters (in Word Problems) Posted on 20150520 (4 Comments) 
 re: Other examples by Charlie (20150521 10:49:16) 
Under 3 squares and 5 ways puzzle (in Just Math) Posted on 20150519 (1 Comments) 
 computer solution by Charlie (20150519 15:11:37) 
Under 7G vs 7B (in General) Posted on 20150518 (2 Comments) 
 No Subject by Charlie (20150518 22:14:51) 
Under A sequence or not a sequence? (in Logic) Posted on 20150518 (3 Comments) 
 In China and in Ancient Rome by Charlie (20150518 11:14:30) 
 Of course... by Charlie (20150518 09:54:09) 
Under Random numbers sum together (in Probability) Posted on 20150515 (3 Comments) 
 re(2): solution: as presented and with a complication by Charlie (20150515 13:56:06) 
 solution: as presented and with a complication by Charlie (20150515 11:01:51) 
Under Sextic Settlement (in Just Math) Posted on 20150513 (6 Comments) 
 re(2): Counterexample by Charlie (20150513 11:20:47) 
Under How far can you go? (in Numbers) Posted on 20150512 (6 Comments) 
 computer exploration by Charlie (20150512 10:26:36) 
Under Cabbagehead’s neighbors (in Word Problems) Posted on 20150508 (3 Comments) 
 computer findings by Charlie (20150508 10:51:07) 
Under Rhyme time (in Word Problems) Posted on 20150507 (6 Comments) 
 a further start by Charlie (20150507 09:46:34) 
Under 4 primes (in Numbers) Posted on 20150506 (3 Comments) 
 computer solution by Charlie (20150506 15:40:46) 
Under Poor primes (in Numbers) Posted on 20150504 (1 Comments) 
 computer solution by Charlie (20150504 19:22:39) 
Under Odd men out (in Logic) Posted on 20150429 (6 Comments) 
 re: Special numbers by Charlie (20150430 11:00:43) 
 starting out by Charlie (20150429 10:20:14) 
Under Largest palindrome (in Numbers) Posted on 20150427 (4 Comments) 
 re(2): program solution by Charlie (20150428 08:11:18) 
 program solution by Charlie (20150427 19:23:24) 
Under Not solvable by computer (?) (in Word Problems) Posted on 20150424 (5 Comments) 
 computer plus human finds only one by Charlie (20150424 12:59:57) 
Under Downward Pair Reading (in Word Problems) Posted on 20150424 (4 Comments) 
 re: solution(s) by Charlie (20150424 21:21:09) 
 computer solution by Charlie (20150424 11:04:56) 
Under Consecutive Count (in Sequences) Posted on 20150423 (4 Comments) 
 revised program by Charlie (20150424 21:49:59) 
 computer solution by Charlie (20150423 15:29:35) 
Under Three's a company (in General) Posted on 20150423 (7 Comments) 
 re(2): And #11 by Charlie (20150426 08:34:23) 
 1,2,3,,,7,8,,10 by Charlie (20150423 09:20:04) 
Under Consecutive Deletion (in Just Math) Posted on 20150422 (1 Comments) 
 computer solution by Charlie (20150422 14:20:58) 
Under Geographic entities (in General) Posted on 20150420 (3 Comments) 
 re(2): computer assisted solution /bonus task by Charlie (20150421 07:45:16) 
 computer assisted solution by Charlie (20150420 15:28:27) 
Under N as a sum of factorials (in Just Math) Posted on 20150420 (1 Comments) 
 solution by Charlie (20150420 09:56:06) 
Under Some powers decomposed (in Numbers) Posted on 20150416 (5 Comments) 
 re: Thoughts from OEIS by Charlie (20150417 11:43:19) 
 computer solution: differently ordered list by Charlie (20150417 07:59:36) 
Under Number Count Conclusion (in Just Math) Posted on 20150415 (4 Comments) 
 computer solution by Charlie (20150415 16:25:15) 
Under 2^(10n) (in Numbers) Posted on 20150415 (8 Comments) 
 re(4): worked out by Charlie (20150417 14:09:41) 
 re(2): worked out by Charlie (20150416 08:06:54) 
 worked out by Charlie (20150415 09:01:19) 
