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Comment Search results for posted by Brian Smith :
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Difficulty: 3 of 5Under Red and Yellow (in Probability)
Posted on 2024-04-16 (7 Comments)
Hints/Tips re(3): some exceptions by Brian Smith (2024-04-18 13:46:24)
Hints/Tips re(2): some exceptions by Brian Smith (2024-04-17 11:03:05)
Difficulty: 3 of 5Under Counting Trapeziums in Regular Polygons (in Just Math)
Posted on 2024-04-12 (4 Comments)
re(2): Repeat! by Brian Smith (2024-04-12 12:23:10)
Repeat! by Brian Smith (2024-04-12 11:18:28)
Difficulty: 3 of 5Under Exploring Coprime Roots in Quadratic Equations (in Just Math)
Posted on 2024-04-09 (6 Comments)
Solution "a root" solution by Brian Smith (2024-04-12 12:15:13)
re: a solution if double root by Brian Smith (2024-04-10 12:35:14)
Difficulty: 3 of 5Under Primes in fraction (in Just Math)
Posted on 2024-04-05 (3 Comments)
Solution Solution by Brian Smith (2024-04-05 11:21:11)
Difficulty: 4 of 5Under Unequal tetrahedron (in Shapes)
Posted on 2024-04-02 (7 Comments)
Solution Solution by Brian Smith (2024-04-02 13:20:21)
Difficulty: 2 of 5Under Squeeze in II (in Just Math)
Posted on 2024-04-01 (8 Comments)
re(2): Second attempt by Brian Smith (2024-04-02 12:05:37)
re: solution by Brian Smith (2024-04-01 11:31:08)
Difficulty: 3 of 5Under Equilateral triangle by distances (in Shapes)
Posted on 2024-03-29 (5 Comments)
Some Thoughts Thoughts by Brian Smith (2024-03-30 21:58:55)
Difficulty: 2 of 5Under A Riddle for the Ages (in Just Math)
Posted on 2024-03-29 (4 Comments)
Solution Another solution by Brian Smith (2024-03-29 11:04:58)
Difficulty: 3 of 5Under Maximizing products (in Just Math)
Posted on 2024-03-26 (5 Comments)
re: Guesses by Brian Smith (2024-03-26 13:00:19)
Difficulty: 2 of 5Under Some factorial and some power (in Just Math)
Posted on 2024-03-26 (5 Comments)
Solution Another solution by Brian Smith (2024-03-26 22:56:26)
Difficulty: 3 of 5Under No squareless triplets (in Just Math)
Posted on 2024-03-25 (1 Comments)
Solution Solution by Brian Smith (2024-03-25 11:45:37)
Difficulty: 3 of 5Under Odd divisor summation (in Just Math)
Posted on 2024-03-21 (4 Comments)
Solution Solution by Brian Smith (2024-03-21 12:06:33)
Difficulty: 3 of 5Under Find This Limit (in Calculus)
Posted on 2024-03-10 (4 Comments)
Solution Analytic Solution by Brian Smith (2024-03-10 18:50:20)
Difficulty: 3 of 5Under Define a rational function (in Probability)
Posted on 2024-03-04 (5 Comments)
Solution re: Analytic solution - proof by Brian Smith (2024-03-05 12:25:51)
Difficulty: 2 of 5Under No-zero Squares (in Numbers)
Posted on 2024-02-28 (4 Comments)
Solution Solution by Brian Smith (2024-02-28 11:55:39)
Difficulty: 4 of 5Under Second derivative of a cosine product (in Calculus)
Posted on 2024-02-27 (5 Comments)
Analytic request by Brian Smith (2024-02-28 10:58:17)
Difficulty: 3 of 5Under Some Sum of 2 Powers is a Perfect Square (in Numbers)
Posted on 2024-02-26 (2 Comments)
Solution Quick solution by Brian Smith (2024-02-26 10:50:15)
Difficulty: 3 of 5Under Positive Integer and Real Number Expression 2 (in Just Math)
Posted on 2024-02-24 (2 Comments)
Solution Solution by Brian Smith (2024-02-24 10:58:08)
Difficulty: 3 of 5Under Row of towers (in Shapes)
Posted on 2024-02-23 (5 Comments)
Solution Greedy Algorithm by Brian Smith (2024-02-24 11:13:57)
Difficulty: 3 of 5Under Find Last 3 Digits (in Just Math)
Posted on 2024-02-20 (4 Comments)
Solution Analytic Solution by Brian Smith (2024-02-20 11:10:09)
re: computer-aided solution by Brian Smith (2024-02-20 10:49:18)
Difficulty: 3 of 5Under Prime Pairs satisfy Quintic = Cubic (in Numbers)
Posted on 2024-02-17 (7 Comments)
re: Analytic solution with computer verification by Brian Smith (2024-02-17 19:04:00)
Difficulty: 3 of 5Under Inradius as the GCD of sides (in Just Math)
Posted on 2024-02-14 (2 Comments)
Solution Solution by Brian Smith (2024-02-17 19:22:28)
Difficulty: 3 of 5Under Quadratic Function Determination (in Just Math)
Posted on 2024-02-02 (4 Comments)
Solution Solution by Brian Smith (2024-02-02 11:17:27)
Difficulty: 2 of 5Under The First Lady (in Probability)
Posted on 2024-01-30 (12 Comments)
Some Thoughts re: Excel (spoiler) by Brian Smith (2024-01-30 11:07:37)
Difficulty: 3 of 5Under Sum of Ratios is an Integer (in Numbers)
Posted on 2024-01-25 (2 Comments)
Solution Repeat! by Brian Smith (2024-01-25 23:07:04)
Difficulty: 3 of 5Under Back to derivative basics (in Calculus)
Posted on 2024-01-22 (2 Comments)
Solution Solution by Brian Smith (2024-01-23 12:01:50)
Difficulty: 3 of 5Under LCM and GCD Crossed Value Derivation (in Just Math)
Posted on 2024-01-11 (3 Comments)
Solution Solution by Brian Smith (2024-01-11 10:39:58)
Difficulty: 3 of 5Under Find the Last Two Digits (in Numbers)
Posted on 2024-01-07 (2 Comments)
Solution Solution by Brian Smith (2024-01-07 10:54:18)
Difficulty: 3 of 5Under Area / Perimeter Ratio (in Numbers)
Posted on 2024-01-04 (5 Comments)
Hints/Tips Possible maximum by Brian Smith (2024-01-05 23:25:36)
Difficulty: 3 of 5Under Square Sides (in Numbers)
Posted on 2024-01-01 (7 Comments)
Solution Solution by Brian Smith (2024-01-02 10:11:52)
Difficulty: 3 of 5Under Manaslu Trail (in Logic)
Posted on 2023-12-27 (1 Comments)
Solution Solution by Brian Smith (2024-01-01 15:47:57)
Difficulty: 3 of 5Under Solving a System of Equations with Real Numbers (in Just Math)
Posted on 2023-12-25 (2 Comments)
Solution Solution by Brian Smith (2023-12-25 14:35:57)
Difficulty: 3 of 5Under Flipper (in Games)
Posted on 2023-12-16 (6 Comments)
Solution Generalized Solution by Brian Smith (2023-12-17 10:34:13)
Difficulty: 2 of 5Under Maximum of divisor contraints (in Just Math)
Posted on 2023-12-07 (3 Comments)
Some Thoughts Generalization by Brian Smith (2023-12-10 12:43:03)
Difficulty: 3 of 5Under Pentagon maximized (in Geometry)
Posted on 2023-11-23 (3 Comments)
Some Thoughts Thoughts by Brian Smith (2023-11-23 11:24:55)
Difficulty: 3 of 5Under Dissected square with center intact (in Shapes)
Posted on 2023-11-21 (3 Comments)
Some Thoughts Part 2 Answer by Brian Smith (2023-11-21 23:14:43)
Hints/Tips Part 1 Answer by Brian Smith (2023-11-21 13:44:12)
Difficulty: 3 of 5Under Last two digits (in Just Math)
Posted on 2023-11-18 (2 Comments)
Solution Solution by Brian Smith (2023-11-18 10:49:49)
Difficulty: 2 of 5Under Lighthouse Crossed Three Lights Muse (in General)
Posted on 2023-11-17 (6 Comments)
Some Thoughts re: Solution by Brian Smith (2023-11-17 09:48:04)
Difficulty: 3 of 5Under Additively Quadratic 2 (in Numbers)
Posted on 2023-11-11 (4 Comments)
Some Thoughts A set of solutions by Brian Smith (2023-11-11 14:20:03)
Difficulty: 2 of 5Under Front and Back Crossed Length of the Train (in General)
Posted on 2023-11-09 (6 Comments)
Solution Solution by Brian Smith (2023-11-09 11:29:23)
Difficulty: 3 of 5Under Even degree and Odd coefficient Crossed Polynomial Poser (in Just Math)
Posted on 2023-10-29 (7 Comments)
re: Request for Clarification by Brian Smith (2023-10-29 09:43:02)
Difficulty: 3 of 5Under Consider Prime Numbers, Get Cube (in Numbers)
Posted on 2023-10-24 (7 Comments)
re: youtube solution by Brian Smith (2023-10-24 23:21:51)
Difficulty: 3 of 5Under Quadratic Expression System Ascertainment (in Just Math)
Posted on 2023-10-23 (2 Comments)
Solution Solution by Brian Smith (2023-10-23 13:07:15)
Difficulty: 3 of 5Under Power Crossed Expression Evaluation (in Numbers)
Posted on 2023-10-22 (3 Comments)
re: possible solution by Brian Smith (2023-10-22 11:40:51)
Solution Solution by Brian Smith (2023-10-22 11:37:13)
Difficulty: 3 of 5Under Ratio Expression Evaluation (in Numbers)
Posted on 2023-10-19 (4 Comments)
Solution Analytic Solution by Brian Smith (2023-10-19 13:05:13)
Difficulty: 2 of 5Under Sixth powers (in Numbers)
Posted on 2023-10-16 (2 Comments)
Solution Solution by Brian Smith (2023-10-16 23:19:42)
Difficulty: 3 of 5Under What number is ALUMINE? (in Numbers)
Posted on 2023-09-30 (7 Comments)
Solution Analytic Solution by Brian Smith (2023-09-30 10:18:32)
Difficulty: 3 of 5Under Relationship Crossed Minimum Value Determination (in Numbers)
Posted on 2023-09-29 (2 Comments)
Solution Analytic Solution by Brian Smith (2023-09-29 10:18:16)
Difficulty: 3 of 5Under Number and 2023 Remainder Resolution (in Numbers)
Posted on 2023-09-24 (2 Comments)
Some Thoughts Thoughts by Brian Smith (2023-09-24 14:13:53)
Difficulty: 3 of 5Under Real Triplets Crossed Simultaneous System Solution (in Just Math)
Posted on 2023-09-23 (2 Comments)
Solution Solution by Brian Smith (2023-09-23 12:10:02)
Difficulty: 3 of 5Under 3 circles in a sliced square (in Geometry)
Posted on 2023-09-22 (2 Comments)
Solution Solution by Brian Smith (2023-09-23 19:43:34)
Difficulty: 4 of 5Under Tiling with Triominoes (in Shapes)
Posted on 2023-09-22 (6 Comments)
re: thanks by Brian Smith (2023-11-09 11:51:35)
re: soln by Brian Smith (2023-11-08 10:58:57)
Difficulty: 3 of 5Under Floor Ratio Crossed Last Two Digits (in Just Math)
Posted on 2023-09-21 (3 Comments)
Solution Analytic Solution by Brian Smith (2023-09-21 22:58:54)
Difficulty: 3 of 5Under 3 unknowns (in Just Math)
Posted on 2023-09-18 (4 Comments)
Hints/Tips re: Puzzle Solution by Brian Smith (2023-09-18 11:50:58)
Difficulty: 3 of 5Under Real Number Crossed Symmetric System of Equations (in Just Math)
Posted on 2023-09-18 (2 Comments)
Solution Solution by Brian Smith (2023-09-18 11:06:10)
Difficulty: 2 of 5Under Golden sine (in Just Math)
Posted on 2023-09-17 (3 Comments)
Solution re: proof found by Brian Smith (2023-09-18 10:49:24)
Difficulty: 1 of 5Under Polynomial and exponential (in Just Math)
Posted on 2023-09-15 (3 Comments)
Solution Another solution by Brian Smith (2023-09-15 23:00:26)
Difficulty: 3 of 5Under A cubic equation (in Just Math)
Posted on 2023-09-14 (2 Comments)
Solution Solution by Brian Smith (2023-09-14 23:59:54)
Difficulty: 2 of 5Under Non-negative Integers Crossed Expression Product puzzle (in Numbers)
Posted on 2023-09-07 (3 Comments)
Solution Another solution by Brian Smith (2023-09-07 10:51:07)
Difficulty: 3 of 5Under A distorted chessboard (in Shapes)
Posted on 2023-09-05 (3 Comments)
Solution Solution by Brian Smith (2023-09-05 12:12:22)
Difficulty: 3 of 5Under Matrix probability (in Probability)
Posted on 2023-09-03 (2 Comments)
Solution Analytic Solution by Brian Smith (2023-09-03 19:32:17)
Difficulty: 3 of 5Under The Exam (in Logic)
Posted on 2023-08-31 (7 Comments)
Dejavu by Brian Smith (2023-08-31 10:47:44)
Difficulty: 3 of 5Under lcm divided by gcd (in Just Math)
Posted on 2023-08-30 (1 Comments)
Solution Solution by Brian Smith (2023-08-30 12:01:27)
Difficulty: 3 of 5Under Find pairs by Euclid (in Just Math)
Posted on 2023-08-27 (3 Comments)
Solution re: Found one; found a proof. by Brian Smith (2023-08-27 12:54:10)
Difficulty: 3 of 5Under Parabola triangle (in Just Math)
Posted on 2023-08-25 (2 Comments)
Solution Solution by Brian Smith (2023-08-26 12:53:21)
Difficulty: 3 of 5Under A clock area (in Just Math)
Posted on 2023-08-23 (6 Comments)
re: Computer method - faulty premise by Brian Smith (2023-08-23 11:54:42)
Difficulty: 2 of 5Under Near pi Equation Solution Settlement (in Just Math)
Posted on 2023-08-23 (3 Comments)
Solution Pencil and Paper by Brian Smith (2023-08-23 11:45:47)
Difficulty: 3 of 5Under Sum Six Digit Even Numbers (in Numbers)
Posted on 2023-08-22 (4 Comments)
Solution Analytic Solution by Brian Smith (2023-08-23 10:23:47)
Difficulty: 3 of 5Under Similar triangle split (in Geometry)
Posted on 2023-08-20 (2 Comments)
Solution Solution by Brian Smith (2023-08-20 12:54:48)
Difficulty: 2 of 5Under Age function (in Just Math)
Posted on 2023-08-17 (7 Comments)
re: Solution a slightly different way by Brian Smith (2023-08-20 11:11:07)
re: question by Brian Smith (2023-08-20 11:09:59)
Solution Solution by Brian Smith (2023-08-18 12:57:32)
Difficulty: 3 of 5Under Continued Division and Parentheses Crossed Positive Integer Determination Poser (in Numbers)
Posted on 2023-08-16 (2 Comments)
Solution Solution by Brian Smith (2023-08-16 14:01:09)
Difficulty: 3 of 5Under Obtuse triangle from equilateral triangle (in Geometry)
Posted on 2023-08-14 (4 Comments)
Solution re: Solution - Quicker by Brian Smith (2023-08-15 00:57:51)
Solution Another solution by Brian Smith (2023-08-14 23:52:38)
Solution Solution by Brian Smith (2023-08-14 11:39:08)
Difficulty: 2 of 5Under Explore a diophantine equation (in Just Math)
Posted on 2023-08-14 (6 Comments)
Solution Analytic Solution by Brian Smith (2023-08-14 10:50:33)
Difficulty: 3 of 5Under Power to factorial (in Just Math)
Posted on 2023-08-13 (3 Comments)
Some Thoughts Modular arithmetic by Brian Smith (2023-08-13 15:22:25)
Difficulty: 3 of 5Under A positive determinant (in Just Math)
Posted on 2023-08-11 (3 Comments)
Solution re: A Theorem - Solving the given problem by Brian Smith (2023-08-12 00:27:41)
Hints/Tips A Theorem by Brian Smith (2023-08-12 00:17:24)
Difficulty: 3 of 5Under Maximize Rectangle on Semicircle in Triangle (in Calculus)
Posted on 2023-08-08 (4 Comments)
Solution Solution by Brian Smith (2023-08-09 10:20:59)
Difficulty: 3 of 5Under Sum Fractional Ratios (in Numbers)
Posted on 2023-08-07 (4 Comments)
re(2): Analytic Solution by Brian Smith (2023-08-08 09:46:13)
Solution Analytic Solution by Brian Smith (2023-08-07 13:50:47)
Difficulty: 1 of 5Under Easy KISS problem (in Just Math)
Posted on 2023-08-04 (4 Comments)
Solution Solution by Brian Smith (2023-08-04 09:49:39)
Difficulty: 3 of 5Under Valid Prime Number Pairs (in Numbers)
Posted on 2023-08-03 (2 Comments)
Solution Solution by Brian Smith (2023-08-03 12:11:07)
Difficulty: 1 of 5Under Diophantine quickie III (in Numbers)
Posted on 2023-08-03 (1 Comments)
Solution Solution by Brian Smith (2023-08-03 12:16:14)
Difficulty: 3 of 5Under Consider Prime Expression, Get Integer Value (in Numbers)
Posted on 2023-08-02 (1 Comments)
Solution Solution by Brian Smith (2023-08-02 11:18:23)
Difficulty: 3 of 5Under Prime or Composite Decision (in Numbers)
Posted on 2023-08-02 (2 Comments)
Solution Pencil and Paper by Brian Smith (2023-08-02 09:47:47)
Difficulty: 3 of 5Under Cosine ratio to Sine (in Just Math)
Posted on 2023-08-01 (1 Comments)
Solution Solution by Brian Smith (2023-08-01 11:06:59)
Difficulty: 3 of 5Under Concatenated 3-digit integers Crossed Ratio Puzzle (in Numbers)
Posted on 2023-08-01 (3 Comments)
Solution Analytic Solution by Brian Smith (2023-08-01 09:40:47)
Difficulty: 3 of 5Under Circle's convergence (in Just Math)
Posted on 2023-07-31 (3 Comments)
re(2): Solution by Brian Smith (2023-08-02 13:48:58)
Solution Solution by Brian Smith (2023-08-01 00:50:00)
Difficulty: 2 of 5Under Fractional Sum Quickie (in Just Math)
Posted on 2023-07-31 (1 Comments)
Solution Solution by Brian Smith (2023-07-31 10:42:54)
Difficulty: 3 of 5Under Irrational powered equation (in Just Math)
Posted on 2023-07-30 (3 Comments)
Solution Solution by Brian Smith (2023-07-30 17:08:47)
Difficulty: 3 of 5Under Logarithm Crossed Ordered Pairs Puzzle (in Just Math)
Posted on 2023-07-30 (4 Comments)
Solution Analytic Solution by Brian Smith (2023-07-30 10:13:43)
Difficulty: 3 of 5Under Seven-digit Number (in Numbers)
Posted on 2023-07-28 (5 Comments)
re: high hopes dashed by Brian Smith (2023-07-29 11:01:51)
Difficulty: 3 of 5Under 521st Digit Determination (in Just Math)
Posted on 2023-07-28 (2 Comments)
Solution Analytic Solution by Brian Smith (2023-07-28 10:01:16)
Difficulty: 3 of 5Under Lucky Guests Crossed Distinct Colored Hat Conclusion (in Numbers)
Posted on 2023-07-27 (2 Comments)
Some Thoughts Solution? by Brian Smith (2023-07-28 11:14:16)
Difficulty: 3 of 5Under Permutation List 3 (in Numbers)
Posted on 2023-07-25 (3 Comments)
Solution Solution by Brian Smith (2023-07-25 09:57:49)
Difficulty: 3 of 5Under Restricted ternary numbers (in Numbers)
Posted on 2023-07-24 (4 Comments)
Solution Solution by Brian Smith (2023-07-24 11:53:37)
Difficulty: 3 of 5Under Forming a formula (in Just Math)
Posted on 2023-07-23 (2 Comments)
Solution Solution by Brian Smith (2023-07-23 20:46:24)
Difficulty: 2 of 5Under Pairs by rearranging (in Just Math)
Posted on 2023-07-22 (3 Comments)
Solution Solution by Brian Smith (2023-07-22 12:57:31)
Difficulty: 3 of 5Under String of 8s and Divisibility (in Numbers)
Posted on 2023-07-19 (3 Comments)
Some Thoughts Finding N by Brian Smith (2023-07-19 12:21:08)
Difficulty: 3 of 5Under Twenty-third Power Posit (in Numbers)
Posted on 2023-07-18 (4 Comments)
Solution Analytic Solution by Brian Smith (2023-07-19 00:51:58)
Difficulty: 3 of 5Under Reciprocal Equation #9 (in Numbers)
Posted on 2023-07-16 (6 Comments)
Solution Solution by Brian Smith (2023-07-16 09:50:18)
Difficulty: 3 of 5Under Simultaneous inequality? (in Just Math)
Posted on 2023-07-15 (4 Comments)
Solution Solution by Brian Smith (2023-07-15 15:13:05)
Difficulty: 3 of 5Under Some Decic Sin and Cos Sum to Rational Numbers (in Just Math)
Posted on 2023-07-12 (5 Comments)
Solution Solution by Brian Smith (2023-07-14 10:56:18)
Hints/Tips Solution hints by Brian Smith (2023-07-12 23:18:46)
Difficulty: 2 of 5Under Triangle of Sticks (in Just Math)
Posted on 2023-07-11 (4 Comments)
Solution Solution by Brian Smith (2023-07-11 09:50:41)
Difficulty: 3 of 5Under Some Lengths May Parallel X-axis (in Just Math)
Posted on 2023-07-09 (3 Comments)
Solution re(2): Seems unlikely - Solution by Brian Smith (2023-07-10 10:32:50)
Difficulty: 3 of 5Under Trigonometry with altitudes (in Geometry)
Posted on 2023-07-09 (3 Comments)
re: Something's missing? by Brian Smith (2023-07-10 00:20:27)
Difficulty: 4 of 5Under Finding 2022nd derivative (in Calculus)
Posted on 2023-07-07 (15 Comments)
Some Thoughts Thoughts by Brian Smith (2023-07-07 13:24:37)
Difficulty: 3 of 5Under Dodecagon Based Pyramid (in Shapes)
Posted on 2023-07-06 (4 Comments)
Solution Solution by Brian Smith (2023-07-08 09:47:42)
Some Thoughts re: Almost solution by Brian Smith (2023-07-06 13:50:21)
Difficulty: 3 of 5Under Remainder Crossed Digit Permutation Resolution (in Numbers)
Posted on 2023-07-06 (3 Comments)
Solution P&P Solution by Brian Smith (2023-07-06 09:48:29)
Difficulty: 3 of 5Under 6 Digit Square Alphametic (in Numbers)
Posted on 2023-07-05 (11 Comments)
Solution Solution by Brian Smith (2023-07-05 12:51:32)
Difficulty: 3 of 5Under Some Quartic Expressions Sum to Fourth Powers (in Numbers)
Posted on 2023-07-04 (2 Comments)
Solution Analytic Solution by Brian Smith (2023-07-04 11:17:49)
Difficulty: 3 of 5Under 98 Crossed Sum of Digits Puzzle (in Numbers)
Posted on 2023-07-03 (6 Comments)
Solution Solution by Brian Smith (2023-07-04 10:49:42)
Difficulty: 2 of 5Under What BIG is bigger? (in Just Math)
Posted on 2023-07-03 (4 Comments)
Solution Solution by Brian Smith (2023-07-03 09:05:37)
Difficulty: 3 of 5Under Three 3-digit Positive Integers (in Numbers)
Posted on 2023-07-02 (5 Comments)
re(2): Answer by Brian Smith (2023-07-04 10:16:15)
Solution Answer by Brian Smith (2023-07-02 16:34:08)
Difficulty: 3 of 5Under Add 1 to Exponent*Number, Get Square (in Numbers)
Posted on 2023-07-02 (2 Comments)
Solution Solution by Brian Smith (2023-07-02 10:29:07)
Difficulty: 2 of 5Under Radar decoded (in Just Math)
Posted on 2023-07-01 (9 Comments)
Solution Solution by Brian Smith (2023-07-02 16:21:47)
Difficulty: 3 of 5Under Some Prime Fractions sum to Integer Fraction (in Numbers)
Posted on 2023-06-29 (4 Comments)
Solution Solution by Brian Smith (2023-06-29 11:54:24)
Difficulty: 4 of 5Under Given Multiderivative Function, Find the value (in Calculus)
Posted on 2023-06-23 (2 Comments)
Hints/Tips Answer by Brian Smith (2023-06-23 11:44:21)
Difficulty: 3 of 5Under Some Linear Combination of Prime May Be a Perfect Square (in Numbers)
Posted on 2023-06-21 (2 Comments)
Some Thoughts Some analytic progress by Brian Smith (2023-06-21 13:40:10)
Difficulty: 2 of 5Under Minimizing disjoint sum (in Just Math)
Posted on 2023-06-20 (6 Comments)
Solution Solution by Brian Smith (2023-06-20 11:00:15)
Difficulty: 3 of 5Under Divisible and not Divisible (in Numbers)
Posted on 2023-06-19 (3 Comments)
Solution Quick solution by Brian Smith (2023-06-19 16:28:31)
Difficulty: 4 of 5Under Nonnegative Exponent Evaluation Nuance (in Numbers)
Posted on 2023-06-18 (2 Comments)
Solution Solution by Brian Smith (2023-06-18 11:36:34)
Difficulty: 4 of 5Under Definite Crossed Expression Ratio Evaluation (in Calculus)
Posted on 2023-06-16 (1 Comments)
Solution Solution by Brian Smith (2023-06-16 13:09:06)
Difficulty: 3 of 5Under Minimum and 2015 Multiple Muse (in Numbers)
Posted on 2023-06-16 (2 Comments)
Solution Solution by Brian Smith (2023-06-16 10:58:29)
Difficulty: 3 of 5Under Quintic Factorization (in Just Math)
Posted on 2023-06-15 (1 Comments)
Solution Solution by Brian Smith (2023-06-15 11:08:39)
Difficulty: 3 of 5Under Three Linear Expressions Divide Three Exponent Expressions (in Numbers)
Posted on 2023-06-15 (4 Comments)
Solution Solution by Brian Smith (2023-06-15 10:24:05)
Difficulty: 3 of 5Under Prime or Composite? (3) (in Numbers)
Posted on 2023-06-10 (3 Comments)
re(2): Solution by Brian Smith (2023-06-10 15:39:58)
Solution Solution by Brian Smith (2023-06-10 10:16:35)
Difficulty: 4 of 5Under Preperiod and Period Poser (in Numbers)
Posted on 2023-06-09 (3 Comments)
Solution Solution by Brian Smith (2023-06-10 09:58:30)
Difficulty: 2 of 5Under Surprising answer III (in Numbers)
Posted on 2023-06-04 (6 Comments)
re(3): 2nd method - principal roots argument ? by Brian Smith (2023-06-04 17:22:56)
Some Thoughts re: 2nd method - principal roots argument by Brian Smith (2023-06-04 12:12:24)
Difficulty: 3 of 5Under Millionth Pandigital II (in Numbers)
Posted on 2023-05-29 (9 Comments)
Solution Base Factorial (Solution) by Brian Smith (2023-05-29 10:21:18)
Difficulty: 3 of 5Under OEIS in the NYT (in Sequences)
Posted on 2023-05-28 (5 Comments)
Part A by Brian Smith (2023-05-28 21:17:43)
Difficulty: 2 of 5Under Complex looking simple integral (in Calculus)
Posted on 2023-05-26 (1 Comments)
Solution Solution by Brian Smith (2023-05-26 23:00:39)
Difficulty: 3 of 5Under Evaluate sin(6°) (in Just Math)
Posted on 2023-05-26 (4 Comments)
Solution Solution by Brian Smith (2023-05-26 10:53:44)
Difficulty: 3 of 5Under Given Radical Real Product, Find the Square of Sum (in Just Math)
Posted on 2023-05-25 (2 Comments)
Solution Solution by Brian Smith (2023-05-25 10:00:41)
Difficulty: 3 of 5Under 1997 Crossed Difference Product Poser (in Numbers)
Posted on 2023-05-22 (2 Comments)
Solution Analytic Solution by Brian Smith (2023-05-22 10:06:34)
Difficulty: 3 of 5Under Some Prime Squares Sum Cube (in Numbers)
Posted on 2023-05-21 (4 Comments)
Solution Full Solution by Brian Smith (2023-05-22 10:27:36)
Difficulty: 3 of 5Under 18 Integers, 36 digits (in Numbers)
Posted on 2023-05-19 (1 Comments)
Solution Solution by Brian Smith (2023-05-19 13:38:56)
Difficulty: 3 of 5Under Unit square overlap I (in Calculus)
Posted on 2023-05-12 (7 Comments)
Solution Analytic Solution by Brian Smith (2023-05-13 11:35:49)
Difficulty: 2 of 5Under Large factor product (in Numbers)
Posted on 2023-05-10 (4 Comments)
Solution Analytic Solution by Brian Smith (2023-05-12 12:46:26)
Difficulty: 4 of 5Under High powers involved (in Just Math)
Posted on 2023-05-09 (6 Comments)
Solution Solution by Brian Smith (2023-05-10 11:57:09)
Difficulty: 3 of 5Under Wanted: the value(s) of the polynomial (in Just Math)
Posted on 2023-05-09 (1 Comments)
Solution Solution by Brian Smith (2023-05-09 11:04:08)
Difficulty: 3 of 5Under 2001 Coin Crossed 1-2-3 Value Conclusion (in General)
Posted on 2023-05-07 (3 Comments)
Solution Solution and more by Brian Smith (2023-05-07 11:15:32)
Difficulty: 3 of 5Under Score Squares Crossed Two Squares Settlement (in Games)
Posted on 2023-04-27 (1 Comments)
Solution Solution by Brian Smith (2023-04-27 13:39:24)
Difficulty: 3 of 5Under A polynomial equation (in Just Math)
Posted on 2023-04-26 (8 Comments)
Some Thoughts re(3): answer by Brian Smith (2023-04-29 10:11:17)
Solution Analytic Solution by Brian Smith (2023-04-27 13:34:45)
re: answer by Brian Smith (2023-04-27 13:10:37)
Difficulty: 1 of 5Under Ay. ay. ay (in Just Math)
Posted on 2023-04-23 (3 Comments)
Solution A solution and a deep dive scrutiny by Brian Smith (2023-04-23 11:05:12)
Difficulty: 3 of 5Under Cryptarithm Crossed Integer Constant Illation (in Numbers)
Posted on 2023-04-22 (5 Comments)
Solution Solution by Brian Smith (2023-04-22 13:59:50)
Difficulty: 3 of 5Under Triple seven power (in Just Math)
Posted on 2023-04-21 (14 Comments)
Solution Solution, with revised text by Brian Smith (2023-04-22 12:47:40)
Difficulty: 3 of 5Under Radical difference trigonometry (in Just Math)
Posted on 2023-04-16 (3 Comments)
Solution Solution by Brian Smith (2023-04-22 15:29:31)
Difficulty: 3 of 5Under Conjugate and radical equation (in Just Math)
Posted on 2023-04-11 (3 Comments)
Solution Solution by Brian Smith (2023-04-11 12:20:03)
Difficulty: 2 of 5Under Basic trigo equation (in Just Math)
Posted on 2023-04-10 (2 Comments)
Solution Solution by Brian Smith (2023-04-10 11:03:56)
Difficulty: 3 of 5Under Interesting Integral Illation (in Calculus)
Posted on 2023-04-06 (3 Comments)
Solution re: Some analytic progress - Final formula by Brian Smith (2023-04-07 18:30:43)
Some Thoughts Some analytic progress by Brian Smith (2023-04-07 11:40:06)
Difficulty: 3 of 5Under Signal Settlement (in Probability)
Posted on 2023-04-05 (5 Comments)
Solution Solution by Brian Smith (2023-04-05 13:59:43)
Difficulty: 3 of 5Under Power Crossed Factorial Poser (in Numbers)
Posted on 2023-04-03 (2 Comments)
Solution Analytic Solution by Brian Smith (2023-04-03 23:41:46)
Difficulty: 2 of 5Under Floored parabola (in Just Math)
Posted on 2023-04-03 (4 Comments)
Hints/Tips re: I think ... by Brian Smith (2023-04-03 11:44:13)
Difficulty: 3 of 5Under Power Crossed Cube Conclusion (in Numbers)
Posted on 2023-04-01 (3 Comments)
Solution Analytic Solution by Brian Smith (2023-04-01 14:51:40)
Difficulty: 3 of 5Under 52-card lottery (in Probability)
Posted on 2023-03-29 (11 Comments)
Solution Part 1 and 2 solutions by Brian Smith (2023-03-29 10:15:44)
Difficulty: 3 of 5Under More Arithmetic Integers II (in Numbers)
Posted on 2023-03-28 (2 Comments)
Solution Analytic Solution by Brian Smith (2023-03-29 00:31:40)
Difficulty: 2 of 5Under Dart Discharge II (in Numbers)
Posted on 2023-03-27 (4 Comments)
Solution Analytic Solution by Brian Smith (2023-03-27 10:54:52)
Difficulty: 3 of 5Under NYT Vertex puzzle query (in Games)
Posted on 2023-03-23 (4 Comments)
Solution re(2): Does this count? by Brian Smith (2023-03-24 10:22:19)
Some Thoughts Does this count? by Brian Smith (2023-03-23 11:46:42)
Difficulty: 3 of 5Under Power after power (in Just Math)
Posted on 2023-03-22 (3 Comments)
Solution Solution by Brian Smith (2023-03-22 12:04:40)
Difficulty: 3 of 5Under Prime Crossed Factor Puzzle (in Numbers)
Posted on 2023-03-18 (3 Comments)
re: Computer solution without extra credit by Brian Smith (2023-03-18 21:05:44)
Difficulty: 3 of 5Under Sum of two squares (in Numbers)
Posted on 2023-03-14 (4 Comments)
Solution Analytic Solution by Brian Smith (2023-03-14 12:33:24)
Difficulty: 3 of 5Under 2 square roots (in Just Math)
Posted on 2023-03-12 (14 Comments)
Solution Generalized Solution by Brian Smith (2023-03-12 17:31:27)
Difficulty: 3 of 5Under Duodecimal Digital Expansion Puzzle (in Numbers)
Posted on 2023-03-11 (3 Comments)
Solution Analytic Solution by Brian Smith (2023-03-11 14:56:45)
Difficulty: 3 of 5Under Heptagon in a Square (in Shapes)
Posted on 2023-03-07 (13 Comments)
re(2): Some thoughts -- a solution by Brian Smith (2023-03-08 11:06:56)
Difficulty: 3 of 5Under Stairway Ascension Ascertainment (in Numbers)
Posted on 2023-03-07 (6 Comments)
Solution Solution by Brian Smith (2023-03-07 11:16:51)
Difficulty: 3 of 5Under Seventeen Divisibility Surmise (in Algorithms)
Posted on 2023-03-04 (2 Comments)
Solution Two algorithms by Brian Smith (2023-03-04 10:09:50)
Difficulty: 3 of 5Under Three Coin Consideration (in Logic)
Posted on 2023-03-03 (5 Comments)
re(2): Solution by Brian Smith (2023-03-03 22:49:07)
Solution Solution by Brian Smith (2023-03-03 12:42:23)
Difficulty: 3 of 5Under Finding Two Calculator Fractions (in Numbers)
Posted on 2023-03-02 (4 Comments)
Solution Continued Fractions Solution by Brian Smith (2023-03-02 23:49:59)
Difficulty: 3 of 5Under Root Ratio Crossed Rational Resolution (in Numbers)
Posted on 2023-02-22 (3 Comments)
Solution Solution by Brian Smith (2023-02-22 13:09:31)
Difficulty: 3 of 5Under 4 distinct pairs (in Just Math)
Posted on 2023-02-20 (5 Comments)
Solution Solution by Brian Smith (2023-02-20 10:05:38)
Difficulty: 3 of 5Under Divisible by B (in Algorithms)
Posted on 2023-02-10 (2 Comments)
Solution Solution by Brian Smith (2023-02-10 12:57:34)
Difficulty: 3 of 5Under Respectively Divisible II (in Numbers)
Posted on 2023-02-10 (4 Comments)
Solution Solution by Brian Smith (2023-02-10 10:30:53)
Difficulty: 3 of 5Under Packing similar rectangles (in Shapes)
Posted on 2023-02-08 (3 Comments)
Solution Answers by Brian Smith (2023-02-08 23:29:39)
Difficulty: 3 of 5Under Cube Rooted and Squared Til 2023 (in Just Math)
Posted on 2023-02-08 (2 Comments)
Some Thoughts Analytic attempt by Brian Smith (2023-02-08 11:29:47)
Difficulty: 3 of 5Under Consider Prime Ratios, Get Integers (in Numbers)
Posted on 2023-02-04 (4 Comments)
Solution Analytic Solution by Brian Smith (2023-02-04 10:53:13)
Difficulty: 3 of 5Under Ducks in a pond (in Probability)
Posted on 2023-01-24 (17 Comments)
re: The duck sequence by Brian Smith (2023-01-25 17:42:43)
re: Randomize by XY coordinates instead of polar by Brian Smith (2023-01-25 17:33:18)
Solution Solution by Brian Smith (2023-01-24 13:54:53)
Difficulty: 3 of 5Under Triangular and Heptagonal Hindrance (in Numbers)
Posted on 2022-12-22 (3 Comments)
Some Thoughts Not a Cannonball by Brian Smith (2022-12-22 14:45:34)
Difficulty: 2 of 5Under Near Exponential Expressions Crossed Value Derivation (in Just Math)
Posted on 2022-12-20 (2 Comments)
Solution Solution by Brian Smith (2022-12-20 10:12:34)
Difficulty: 3 of 5Under Permuted Duodecimal Mean Muse (in Numbers)
Posted on 2022-12-19 (5 Comments)
Solution Solution and Generalization by Brian Smith (2022-12-19 13:10:44)
Difficulty: 3 of 5Under Year Yearn 4 (in Numbers)
Posted on 2022-12-18 (5 Comments)
Solution Solution by Brian Smith (2022-12-21 12:27:49)
Difficulty: 3 of 5Under Simultaneous Settlement VI (in Just Math)
Posted on 2022-12-17 (4 Comments)
Solution Solution by Brian Smith (2022-12-17 10:08:55)
Difficulty: 3 of 5Under Prime Crossed Square Poser (in Numbers)
Posted on 2022-12-12 (3 Comments)
Solution Solution by Brian Smith (2022-12-12 10:42:21)
Difficulty: 3 of 5Under Rising above the ceiling (in Probability)
Posted on 2022-12-06 (6 Comments)
Some Thoughts Part 3 by Brian Smith (2022-12-08 11:32:15)
Difficulty: 3 of 5Under Fraction-Fraction-Fraction Finding (in Numbers)
Posted on 2022-12-02 (2 Comments)
Solution Continued Fractions by Brian Smith (2022-12-02 10:09:05)
Difficulty: 3 of 5Under Factorial Crossed Nonzero Digits Determination (in Numbers)
Posted on 2022-12-01 (4 Comments)
Solution Pencil and Paper by Brian Smith (2022-12-01 23:33:02)
Difficulty: 3 of 5Under A Tangential Trapezoid (in Geometry)
Posted on 2022-11-30 (2 Comments)
Solution Solution by Brian Smith (2022-11-30 11:07:43)
Difficulty: 3 of 5Under Factorialroot Fruition (in Just Math)
Posted on 2022-11-24 (2 Comments)
Solution Solution by Brian Smith (2022-11-24 13:55:49)
Difficulty: 3 of 5Under Sawtooth Limit Settlement (in Calculus)
Posted on 2022-11-17 (6 Comments)
Solution Solution by Brian Smith (2024-04-03 23:38:08)
Difficulty: 3 of 5Under A Game of Dice Puzzle (in Probability)
Posted on 2022-11-14 (7 Comments)
Some Thoughts re: soln by Brian Smith (2022-11-16 12:46:02)
Difficulty: 3 of 5Under Binomial Coefficient Product Puzzle (in Numbers)
Posted on 2022-11-07 (3 Comments)
Solution Solution by Brian Smith (2022-11-07 11:36:40)
Difficulty: 3 of 5Under Lights Out! (2) (in General)
Posted on 2022-10-31 (22 Comments)
re: Cleaned-up code for the extension and an observation by Brian Smith (2022-11-14 12:06:27)
re: extension of the problem by Brian Smith (2022-11-11 10:37:12)
Difficulty: 4 of 5Under Average Arctic Distance (in Probability)
Posted on 2022-10-21 (8 Comments)
Some Thoughts Part 1 thoughts by Brian Smith (2022-10-21 23:43:52)
Solution Part 2 Solution by Brian Smith (2022-10-21 11:57:51)
Difficulty: 3 of 5Under Distance through a cube (in Shapes)
Posted on 2022-10-20 (3 Comments)
Solution Analytic Solution by Brian Smith (2022-10-20 11:53:37)
Difficulty: 3 of 5Under A Misinformed Liar Cannot Falsify Facts (in Logic)
Posted on 2022-10-17 (2 Comments)
Solution Solution by Brian Smith (2022-10-17 23:06:42)
Difficulty: 3 of 5Under Knot Tying Travail (in Probability)
Posted on 2022-10-16 (5 Comments)
Solution Solution by Brian Smith (2022-10-16 10:42:55)
Difficulty: 3 of 5Under Regular Hexagon and Mean Distance (in Shapes)
Posted on 2022-10-14 (6 Comments)
re: comment by Brian Smith (2022-10-14 12:20:42)
Difficulty: 3 of 5Under Intriguing Integer Pair Illation (in Numbers)
Posted on 2022-10-11 (3 Comments)
Solution Solution by Brian Smith (2022-10-11 10:03:15)
Difficulty: 2 of 5Under Facile probability poser? (in Probability)
Posted on 2022-10-09 (4 Comments)
Solution Solution by Brian Smith (2022-10-09 16:45:11)
Difficulty: 3 of 5Under Consider, Unit Area, Get Side Length (in Shapes)
Posted on 2022-10-05 (3 Comments)
Solution Analytic Solution by Brian Smith (2022-10-06 00:17:14)
Difficulty: 3 of 5Under The box (2) (in Numbers)
Posted on 2022-10-02 (5 Comments)
Solution Analytic Solution by Brian Smith (2022-10-02 19:04:35)
Difficulty: 3 of 5Under Temperature Temperament V (in Numbers)
Posted on 2022-10-01 (2 Comments)
Solution Analytic Solution by Brian Smith (2022-10-02 11:07:30)
Difficulty: 3 of 5Under Harmonic Harmony 3 (in Numbers)
Posted on 2022-09-15 (3 Comments)
Hints/Tips re: Possible Solution by Brian Smith (2022-09-15 10:40:47)
Difficulty: 3 of 5Under Forty-one's Forte (in Numbers)
Posted on 2022-08-27 (5 Comments)
Solution Pencil and Paper by Brian Smith (2022-08-30 10:58:23)
Difficulty: 3 of 5Under Ratio Resolution VII (in Weights and Scales)
Posted on 2022-08-16 (3 Comments)
Solution Solution by Brian Smith (2022-08-19 11:18:03)
Difficulty: 4 of 5Under Inscribed and Circumscribed Ellipse Puzzle (in Shapes)
Posted on 2022-08-05 (2 Comments)
Hints/Tips Solution by Brian Smith (2022-08-08 11:50:53)
Difficulty: 3 of 5Under Pizza Topping Treat (in Logic)
Posted on 2022-06-19 (4 Comments)
Solution Analytic Solution by Brian Smith (2022-06-19 23:50:36)
Difficulty: 3 of 5Under Quaint Quadruplet Query (in Numbers)
Posted on 2022-06-06 (5 Comments)
Hints/Tips re: when x is odd - when x is even by Brian Smith (2022-06-06 12:40:16)
Difficulty: 3 of 5Under Consecutive Conclusion II (in Sequences)
Posted on 2022-05-25 (3 Comments)
Solution Analytic Solution by Brian Smith (2022-05-25 12:07:42)
Difficulty: 3 of 5Under Colored Marble Muse (in Probability)
Posted on 2022-05-07 (4 Comments)
Solution Solution by Brian Smith (2022-05-08 12:18:02)
Difficulty: 3 of 5Under 50 - Digit Number III (in Numbers)
Posted on 2022-05-04 (7 Comments)
Solution Solution by Brian Smith (2022-05-04 09:35:20)
Difficulty: 3 of 5Under Mixed Fraction Product Poser (in Just Math)
Posted on 2022-05-03 (10 Comments)
Solution Solution by Brian Smith (2022-05-03 11:49:53)
Difficulty: 2 of 5Under No doubles (in Logic)
Posted on 2022-05-02 (10 Comments)
Some Thoughts Another Idea by Brian Smith (2022-05-02 10:35:31)
Difficulty: 3 of 5Under Sports Medal Muse (in Numbers)
Posted on 2022-04-30 (6 Comments)
Solution Solution by Brian Smith (2022-04-30 11:42:23)
Difficulty: 3 of 5Under Counting words (in Just Math)
Posted on 2022-04-27 (7 Comments)
Solution Analytic Solution by Brian Smith (2022-04-27 09:54:50)
Difficulty: 3 of 5Under Find all Numbers II (in Numbers)
Posted on 2022-04-24 (4 Comments)
Solution Solution by Brian Smith (2022-04-24 10:07:27)
Difficulty: 2 of 5Under L OR H (in Weights and Scales)
Posted on 2022-04-18 (4 Comments)
Solution Another solution by Brian Smith (2022-04-19 12:57:10)
Solution Solution by Brian Smith (2022-04-18 10:34:15)
Difficulty: 3 of 5Under Digit Replacement and Square Settlement (in Numbers)
Posted on 2022-04-11 (5 Comments)
Hints/Tips Going much further by Brian Smith (2022-04-11 12:19:25)
Solution Analytic Solution by Brian Smith (2022-04-11 12:11:31)
Difficulty: 3 of 5Under All the nines (in Numbers)
Posted on 2022-04-07 (9 Comments)
Some Thoughts Thoughts by Brian Smith (2022-04-08 00:00:04)
Difficulty: 1 of 5Under Did Bobby err? (in Numbers)
Posted on 2022-04-02 (5 Comments)
Solution Another solution (overkill?) by Brian Smith (2022-04-03 09:52:14)
Difficulty: 3 of 5Under Flipflop the digits, octuple the number (in Numbers)
Posted on 2022-03-30 (5 Comments)
Some Thoughts re(3): computer solution by Brian Smith (2022-03-31 10:07:50)
re: computer solution by Brian Smith (2022-03-30 12:05:08)
Difficulty: 3 of 5Under Rational Reverse Crossed Product Resolution (in Numbers)
Posted on 2022-03-18 (5 Comments)
Solution Solution part 2 (no digit zero) by Brian Smith (2022-04-15 18:44:33)
Solution Solution part 1 (with digit zero) by Brian Smith (2022-04-15 17:57:52)
Difficulty: 3 of 5Under Ratio Resolution VI (in Just Math)
Posted on 2022-03-04 (2 Comments)
Solution Solution by Brian Smith (2022-03-04 12:43:22)
Difficulty: 3 of 5Under No consecutive 1's (in Numbers)
Posted on 2022-02-27 (2 Comments)
Solution Solution by Brian Smith (2022-03-01 11:54:10)
Difficulty: 1 of 5Under KISS solution (in Just Math)
Posted on 2021-12-29 (8 Comments)
re: levels - the graph by Brian Smith (2021-12-30 11:46:57)
Solution Solution by Brian Smith (2021-12-30 11:20:15)
Difficulty: 3 of 5Under The not-always-lying islanders (in Logic)
Posted on 2021-12-22 (4 Comments)
Solution Solution by Brian Smith (2021-12-22 12:50:55)
Difficulty: 2 of 5Under Straight Up Inequality (in Just Math)
Posted on 2021-12-14 (2 Comments)
Some Thoughts Quick answer by Brian Smith (2021-12-14 11:11:11)
Difficulty: 3 of 5Under Mas o menos vs comme il faut (in Just Math)
Posted on 2021-12-04 (3 Comments)
Solution Estimate and exact number without computer by Brian Smith (2021-12-04 11:28:27)
Difficulty: 3 of 5Under Periodic functional equation (in Just Math)
Posted on 2021-12-02 (2 Comments)
Solution Solution by Brian Smith (2023-03-30 10:55:11)
Difficulty: 3 of 5Under Factorial Removal Resolution (in Just Math)
Posted on 2021-12-01 (3 Comments)
Solution Solution by Brian Smith (2021-12-01 12:19:00)
Difficulty: 3 of 5Under Cubic computation (in Just Math)
Posted on 2021-11-19 (3 Comments)
Solution Finishing the solution by Brian Smith (2021-11-24 10:11:16)
Hints/Tips Start of a solution by Brian Smith (2021-11-23 12:29:17)
Difficulty: 2 of 5Under Cubic Arithmetic Conclusion (in Just Math)
Posted on 2021-11-16 (4 Comments)
Solution Solution by Brian Smith (2021-11-16 12:09:59)
Difficulty: 4 of 5Under Partially illuminated cone (in Calculus)
Posted on 2021-11-12 (10 Comments)
Hints/Tips Some analytic progress by Brian Smith (2021-11-13 15:58:02)
Difficulty: 2 of 5Under Simple complex numbers (in Just Math)
Posted on 2021-11-09 (2 Comments)
Solution Solution by Brian Smith (2021-11-10 13:34:44)
Difficulty: 3 of 5Under Partially illuminated cylinder (in Calculus)
Posted on 2021-11-03 (9 Comments)
Some Thoughts re(3): Solution by Brian Smith (2021-11-13 11:10:58)
Hints/Tips re(2): Solution by Brian Smith (2021-11-08 10:21:56)
Solution Solution by Brian Smith (2021-11-04 11:58:43)
Difficulty: 2 of 5Under Cubic conundrum (in Just Math)
Posted on 2021-10-18 (3 Comments)
Some Thoughts re: Solution by Brian Smith (2021-10-19 13:01:37)
Difficulty: 3 of 5Under Function at least 2 (in Just Math)
Posted on 2021-10-15 (4 Comments)
Solution Longer solution by Brian Smith (2021-10-16 22:55:08)
Difficulty: 3 of 5Under Symmetrical biquadratic (in Just Math)
Posted on 2021-10-01 (6 Comments)
Solution Solution by Brian Smith (2021-10-01 23:40:13)
Difficulty: 2 of 5Under Expo 7629 (in Numbers)
Posted on 2021-09-27 (7 Comments)
Solution Solution by Brian Smith (2021-09-27 12:26:20)
Difficulty: 3 of 5Under Imagine the points (in Just Math)
Posted on 2021-09-22 (3 Comments)
Solution Solution by Brian Smith (2021-09-22 23:47:55)
Difficulty: 4 of 5Under Largest circle in quadrilateral (in Geometry)
Posted on 2021-09-17 (8 Comments)
Hints/Tips Bicentric exploration by Brian Smith (2021-09-19 11:28:53)
Difficulty: 3 of 5Under The 10th distance (in Just Math)
Posted on 2021-09-06 (8 Comments)
Solution Analytic Solution by Brian Smith (2021-09-06 10:49:45)
Difficulty: 2 of 5Under Angle bisector in isosceles trapezoid (in Geometry)
Posted on 2021-08-30 (2 Comments)
Solution Solution by Brian Smith (2021-09-02 23:51:21)
Difficulty: 2 of 5Under Bivariate equation (in Numbers)
Posted on 2021-08-27 (3 Comments)
Solution Solution by Brian Smith (2021-08-28 10:41:51)
Difficulty: 3 of 5Under 2 neighbours create a square (in Numbers)
Posted on 2021-08-19 (9 Comments)
Some Thoughts Descending case analysis by Brian Smith (2021-08-20 23:30:01)
Solution Analytic Solution (ascending) by Brian Smith (2021-08-19 23:30:05)
Difficulty: 3 of 5Under Prime pair equation (in Numbers)
Posted on 2021-08-18 (2 Comments)
Solution Analytic Solution by Brian Smith (2023-04-02 21:26:27)
Difficulty: 3 of 5Under Planar factor graphs (in Just Math)
Posted on 2021-08-16 (16 Comments)
Some Thoughts Part 3 - graph by Brian Smith (2021-08-19 12:41:48)
re(2): Part 3 - K5 and K3,3 by Brian Smith (2021-08-18 23:32:25)
Some Thoughts Part 3 - K5 and K3,3 by Brian Smith (2021-08-17 23:11:01)
re(2): Solution parts 1 and 2 by Brian Smith (2021-08-17 22:46:04)
Solution Solution parts 1 and 2 by Brian Smith (2021-08-17 12:28:53)
Difficulty: 3 of 5Under Functional fiesta (in Just Math)
Posted on 2021-08-12 (3 Comments)
re: Solution - problem by Brian Smith (2021-08-13 00:09:29)
Difficulty: 2 of 5Under A coprime couple (in Numbers)
Posted on 2021-08-05 (3 Comments)
Solution Solution by Brian Smith (2021-08-05 11:42:52)
Difficulty: 2 of 5Under Indeed common (in Just Math)
Posted on 2021-08-03 (3 Comments)
Solution Solution by Brian Smith (2023-03-07 12:01:19)
Difficulty: 3 of 5Under Algebraic factors? (in Just Math)
Posted on 2021-07-28 (3 Comments)
Solution Solution by Brian Smith (2021-07-28 10:18:50)
Difficulty: 2 of 5Under Product of odd primes with distinct digits (in Numbers)
Posted on 2021-07-23 (5 Comments)
Solution Question 2 and 3 answers. by Brian Smith (2021-07-23 12:16:36)
Difficulty: 3 of 5Under Solution in every interval? (in Just Math)
Posted on 2021-07-09 (5 Comments)
Solution re: solution (finishing the one detail) by Brian Smith (2021-07-11 18:12:44)
Difficulty: 4 of 5Under Circle Line Locus (in Just Math)
Posted on 2021-07-02 (9 Comments)
re: what the curve looks like by Brian Smith (2021-07-03 12:44:46)
Difficulty: 3 of 5Under 3 roots of a biquadratic (in Just Math)
Posted on 2021-03-14 (3 Comments)
re(2): Solution by Brian Smith (2021-03-15 10:25:24)
Solution Solution by Brian Smith (2021-03-14 17:03:52)
Difficulty: 3 of 5Under The replacement game (in Numbers)
Posted on 2021-03-09 (2 Comments)
Hints/Tips re: Observations, some values by Brian Smith (2021-03-09 11:28:51)
Difficulty: 3 of 5Under Numeric card game (in Just Math)
Posted on 2021-03-04 (6 Comments)
re: solution by Brian Smith (2021-03-04 23:27:34)
Difficulty: 2 of 5Under Trapezium in polygon (in Numbers)
Posted on 2021-02-18 (3 Comments)
Solution Generalized Solution by Brian Smith (2021-02-19 12:29:48)
Difficulty: 2 of 5Under Integer sides of cuboid (in Numbers)
Posted on 2021-02-17 (7 Comments)
re: Non-rectangular cuboids by Brian Smith (2021-02-17 22:49:56)
Difficulty: 3 of 5Under Solve in naturals (in Numbers)
Posted on 2021-02-12 (3 Comments)
Solution Squeeze Play Solution by Brian Smith (2021-02-12 11:11:29)
Difficulty: 3 of 5Under The nearness of you (in Logic)
Posted on 2021-02-06 (2 Comments)
Solution Solution by Brian Smith (2021-02-07 10:19:18)
Difficulty: 3 of 5Under Entries of a matrix (in Just Math)
Posted on 2021-01-29 (5 Comments)
Solution Solution by Brian Smith (2021-01-30 21:32:06)
Difficulty: 4 of 5Under Never consecutive (in Probability)
Posted on 2021-01-26 (7 Comments)
re: Neatening the table by Brian Smith (2021-01-28 10:30:21)
Difficulty: 3 of 5Under An increasing function equation (in Calculus)
Posted on 2021-01-24 (2 Comments)
Solution Solution by Brian Smith (2021-01-24 20:54:16)
Difficulty: 3 of 5Under Go one, two, three (in Numbers)
Posted on 2021-01-09 (6 Comments)
re(2): Solution by Brian Smith (2021-01-17 00:38:50)
Solution Solution by Brian Smith (2021-01-16 13:09:56)
Difficulty: 2 of 5Under Go do modulus (in Numbers)
Posted on 2021-01-02 (8 Comments)
Solution Solution by Brian Smith (2021-01-02 20:27:42)
Difficulty: 3 of 5Under The money winning strategy (in Just Math)
Posted on 2021-01-01 (2 Comments)
No Subject by Brian Smith (2021-01-01 20:06:21)
Difficulty: 3 of 5Under Rectangular blocks (in Just Math)
Posted on 2020-12-30 (5 Comments)
re: Solution by Brian Smith (2020-12-31 14:39:55)
Some Thoughts A start by Brian Smith (2020-12-30 12:49:14)
Difficulty: 2 of 5Under Solve simultaneous with linear and quintic (in Numbers)
Posted on 2020-12-29 (4 Comments)
Solution re: Second look - third look by Brian Smith (2021-09-12 22:56:29)
Difficulty: 3 of 5Under Functional Equation (in Just Math)
Posted on 2020-12-22 (2 Comments)
re: Solution? by Brian Smith (2020-12-23 21:23:43)
Difficulty: 2 of 5Under Conditional pairs (in Just Math)
Posted on 2020-12-19 (7 Comments)
Hints/Tips re: solution by Brian Smith (2020-12-19 11:01:12)
Difficulty: 3 of 5Under Number play (in Numbers)
Posted on 2020-12-18 (5 Comments)
Thoughts by Brian Smith (2020-12-18 17:11:26)
Difficulty: 3 of 5Under Equation in integers (in Numbers)
Posted on 2020-12-06 (5 Comments)
Solution Solution by Brian Smith (2020-12-06 21:27:42)
Difficulty: 2 of 5Under Permuted sums (in Just Math)
Posted on 2020-11-30 (7 Comments)
Solution Solution by Brian Smith (2020-11-30 10:12:54)
Difficulty: 3 of 5Under Making it cubic (in Numbers)
Posted on 2020-11-10 (2 Comments)
Solution Solution by Brian Smith (2020-11-21 11:52:47)
Difficulty: 2 of 5Under Cubic coefficients (in Just Math)
Posted on 2020-11-02 (4 Comments)
Solution re: Possible solution; rest of a solution by Brian Smith (2020-11-02 22:41:07)
Difficulty: 3 of 5Under Chinese remainder to the rescue (in Just Math)
Posted on 2020-10-31 (3 Comments)
re: some progress by Brian Smith (2021-02-06 15:20:47)
Difficulty: 3 of 5Under Polynomial practice (in Just Math)
Posted on 2020-10-30 (3 Comments)
Some Thoughts Thoughts by Brian Smith (2024-02-01 13:51:18)
Difficulty: 3 of 5Under Functional feast (in Just Math)
Posted on 2020-10-17 (3 Comments)
Solution re: A start - a finish by Brian Smith (2020-10-17 17:38:22)
Difficulty: 3 of 5Under Find the pairs (in Numbers)
Posted on 2020-10-13 (22 Comments)
Hints/Tips Half of a solution by Brian Smith (2020-10-13 13:23:38)
Difficulty: 3 of 5Under Gold-in pyramid (in Shapes)
Posted on 2020-10-06 (7 Comments)
Solution Solution by Brian Smith (2020-10-10 00:30:57)
Difficulty: 2 of 5Under Prime equation 2 (in Numbers)
Posted on 2020-10-01 (4 Comments)
Solution Solution by Brian Smith (2020-10-02 21:01:45)
Difficulty: 3 of 5Under Extreme inequality (in Just Math)
Posted on 2020-09-23 (4 Comments)
Solution Solution by Brian Smith (2020-09-23 10:31:16)
Difficulty: 3 of 5Under Repeating squares (in Just Math)
Posted on 2020-09-09 (5 Comments)
re: Solution by Brian Smith (2020-09-09 13:02:19)
Difficulty: 4 of 5Under Sphere parts (in Shapes)
Posted on 2020-09-09 (2 Comments)
Solution Solution by Brian Smith (2020-09-09 12:45:05)
Difficulty: 3 of 5Under S.S. Minnow SOS (in Probability)
Posted on 2020-09-02 (6 Comments)
Solution Solution by Brian Smith (2020-09-04 10:13:23)
Difficulty: 5 of 5Under Extreme revolving cuboid (in Shapes)
Posted on 2020-08-28 (5 Comments)
re: Hint? by Brian Smith (2020-08-28 22:55:55)
Difficulty: 3 of 5Under What price glory? (in Just Math)
Posted on 2020-08-12 (5 Comments)
Another Solution by Brian Smith (2020-08-12 13:28:07)
Difficulty: 4 of 5Under Cosine cups (in Shapes)
Posted on 2020-08-07 (7 Comments)
Solution Solution by Brian Smith (2020-08-08 16:51:50)
Difficulty: 3 of 5Under 7 hypotenuses (in Numbers)
Posted on 2020-07-10 (4 Comments)
Hints/Tips Research by Brian Smith (2020-07-11 20:07:55)
Difficulty: 3 of 5Under Average other (in Numbers)
Posted on 2020-07-01 (6 Comments)
Solution Solution by Brian Smith (2020-07-01 09:39:50)
Difficulty: 3 of 5Under Function range (in Just Math)
Posted on 2020-06-29 (2 Comments)
Solution Solution by Brian Smith (2020-07-04 10:31:29)
Difficulty: 3 of 5Under Cube hunting (in Numbers)
Posted on 2020-05-29 (9 Comments)
Solution Solution by Brian Smith (2020-05-30 07:18:47)
Difficulty: 3 of 5Under Euler and the Modern Army (in Games)
Posted on 2020-05-22 (8 Comments)
re: thought problem about this problem.... by Brian Smith (2020-05-26 19:26:32)
Difficulty: 4 of 5Under An envelope of line family (in Geometry)
Posted on 2020-05-06 (3 Comments)
Solution Solution by Brian Smith (2020-05-10 00:41:58)
Difficulty: 4 of 5Under Algebra busters (in Numbers)
Posted on 2020-04-22 (6 Comments)
Solution Solution by Brian Smith (2021-10-22 12:16:36)
Difficulty: 2 of 5Under Square and triangle in a circle (in Geometry)
Posted on 2020-04-13 (5 Comments)
Solution Geometric Solution by Brian Smith (2020-04-14 00:39:19)
Difficulty: 4 of 5Under Division by e (in Just Math)
Posted on 2020-03-25 (10 Comments)
Solution Solution by Brian Smith (2020-03-27 21:05:13)
Difficulty: 4 of 5Under Heptagonal Triangle (in Shapes)
Posted on 2019-12-27 (5 Comments)
Solution Solution by Brian Smith (2019-12-28 12:15:14)
Difficulty: 3 of 5Under Three Squares make a Triangle (in Shapes)
Posted on 2019-12-23 (3 Comments)
Solution Solution by Brian Smith (2019-12-23 17:39:52)
Difficulty: 3 of 5Under Reflection coincides with the center (in Geometry)
Posted on 2019-12-06 (18 Comments)
Solution Solution by Brian Smith (2019-12-11 10:42:42)
Difficulty: 3 of 5Under Nobody's Perfect (in Just Math)
Posted on 2019-12-04 (11 Comments)
Some Thoughts Thoughts by Brian Smith (2019-12-05 12:01:46)
Difficulty: 3 of 5Under Follow the function (in Just Math)
Posted on 2019-11-28 (6 Comments)
Solution re: some other thoughts - Solution by Brian Smith (2019-12-08 15:32:09)
Some Thoughts re: Thoughts by Brian Smith (2019-12-08 01:06:42)
Some Thoughts Thoughts by Brian Smith (2019-12-01 10:21:22)
Difficulty: 3 of 5Under Can we use Pigeonhole? (in Numbers)
Posted on 2019-11-26 (3 Comments)
Solution Solution by Brian Smith (2019-11-26 10:58:53)
Difficulty: 3 of 5Under The top degree (in Just Math)
Posted on 2019-11-22 (2 Comments)
Solution Solution by Brian Smith (2019-11-22 12:41:57)
Difficulty: 2 of 5Under An old egg problem (in Numbers)
Posted on 2019-11-05 (6 Comments)
Solution re: more formally - no guessing by Brian Smith (2019-11-06 11:11:49)
Difficulty: 4 of 5Under Fancy quadrilateral (in Just Math)
Posted on 2019-10-25 (4 Comments)
Hints/Tips re(3): the right starting point? - isosceles trapezoid by Brian Smith (2019-10-27 19:06:17)
Hints/Tips re: the right starting point? - kite solution by Brian Smith (2019-10-26 13:14:02)
Difficulty: 3 of 5Under Cube rooted till 2019 (in Just Math)
Posted on 2019-10-23 (4 Comments)
Solution Integrals by Brian Smith (2019-10-26 08:58:46)
Difficulty: 3 of 5Under Non-trivial solutions (in Sequences)
Posted on 2019-10-16 (5 Comments)
Hints/Tips A few ideas by Brian Smith (2019-10-17 11:05:42)
Difficulty: 3 of 5Under Tricky sums indeed! (in Numbers)
Posted on 2019-10-10 (3 Comments)
Solution Solution by Brian Smith (2019-10-13 01:04:45)
Difficulty: 3 of 5Under The middle number (in Probability)
Posted on 2019-10-08 (5 Comments)
Solution Solution by Brian Smith (2019-10-08 23:11:54)
Difficulty: 3 of 5Under From incircle to vertices (in Just Math)
Posted on 2019-10-04 (3 Comments)
Solution Solution by Brian Smith (2019-10-10 23:13:18)
Difficulty: 3 of 5Under Solving triangles (in Just Math)
Posted on 2019-10-03 (2 Comments)
Some Thoughts Possible solution by Brian Smith (2019-10-08 22:51:07)
Difficulty: 3 of 5Under Triangle rotation (in Shapes)
Posted on 2019-10-02 (5 Comments)
re(2): Solution by Brian Smith (2019-10-04 11:53:37)
Solution Solution by Brian Smith (2019-10-02 23:23:09)
Difficulty: 1 of 5Under Cotangents product (in Just Math)
Posted on 2019-09-30 (1 Comments)
Solution Solution by Brian Smith (2019-10-01 10:24:05)
Difficulty: 3 of 5Under Hexagonal interior point (in Geometry)
Posted on 2019-09-24 (6 Comments)
Solution Solution by Brian Smith (2019-09-24 23:24:02)
Difficulty: 4 of 5Under Is it an Ellipse? (in Geometry)
Posted on 2019-09-20 (1 Comments)
Solution Solution by Brian Smith (2019-09-20 12:26:45)
Difficulty: 3 of 5Under Area of central locus (in Shapes)
Posted on 2019-09-19 (1 Comments)
Some Thoughts Thoughts by Brian Smith (2019-09-27 22:58:52)
Difficulty: 3 of 5Under Locate the Locus (in Shapes)
Posted on 2019-09-18 (2 Comments)
Some Thoughts Conjecture by Brian Smith (2019-09-19 12:19:01)
Difficulty: 1 of 5Under Just substitute? (in Numbers)
Posted on 2019-09-17 (3 Comments)
Solution Solution by Brian Smith (2019-09-17 13:04:10)
Difficulty: 4 of 5Under Spherical displacement of water (in Shapes)
Posted on 2019-09-13 (9 Comments)
Thoughts by Brian Smith (2019-09-14 01:01:17)
Difficulty: 3 of 5Under 5 circles in a square part 2 (in Geometry)
Posted on 2019-09-08 (2 Comments)
Solution Solution by Brian Smith (2019-09-09 10:59:44)
Difficulty: 4 of 5Under Inellipse (in Shapes)
Posted on 2019-09-07 (4 Comments)
Solution Complex numbers by Brian Smith (2019-09-14 01:19:11)
Solution Easy answer by Brian Smith (2019-09-11 23:29:00)
Difficulty: 3 of 5Under Reduced to single digit (in Numbers)
Posted on 2019-09-06 (14 Comments)
re: some efforts by Brian Smith (2019-09-12 22:46:14)
Difficulty: 2 of 5Under 5 circles in a square part 1 (in Geometry)
Posted on 2019-08-28 (6 Comments)
Solution Solution by Brian Smith (2019-08-31 23:42:19)
Difficulty: 3 of 5Under The Five Touching Spheres (in Shapes)
Posted on 2019-08-25 (21 Comments)
Hints/Tips re: Solution (I'd like confirmation) by Brian Smith (2019-08-28 22:47:54)
Difficulty: 3 of 5Under Summing the product of digits (in Numbers)
Posted on 2019-08-23 (5 Comments)
Solution Solution by Brian Smith (2019-08-24 11:05:33)
Difficulty: 3 of 5Under Sitting rearrangement (in Just Math)
Posted on 2019-08-13 (3 Comments)
Solution Solution by Brian Smith (2019-08-17 10:24:32)
Difficulty: 2 of 5Under points or pigeons in square? (in Just Math)
Posted on 2019-08-05 (8 Comments)
Solution Solution by Brian Smith (2019-08-05 22:42:42)
Difficulty: 3 of 5Under Tangent by Transformation (in Just Math)
Posted on 2019-07-25 (2 Comments)
Solution Solution by Brian Smith (2019-07-25 10:38:25)
Difficulty: 3 of 5Under All that remainder is Gold (in Numbers)
Posted on 2019-07-21 (3 Comments)
re: No Subject by Brian Smith (2019-07-22 10:21:06)
Difficulty: 4 of 5Under Hexagonally closer (in Just Math)
Posted on 2019-07-07 (5 Comments)
Solution re: A start - calculations by Brian Smith (2019-07-07 20:59:38)
Difficulty: 3 of 5Under Triple cube sum (in Numbers)
Posted on 2019-06-28 (3 Comments)
Solution re: Some progress - Solution by Brian Smith (2019-07-02 18:57:25)
Some progress by Brian Smith (2019-06-30 21:00:24)
Difficulty: 2 of 5Under (7x7-1) = 2(5x5-1) (in Shapes)
Posted on 2019-06-25 (3 Comments)
Solution Solution by Brian Smith (2019-06-26 00:01:39)
Difficulty: 3 of 5Under cosine rationality (in Just Math)
Posted on 2019-06-20 (1 Comments)
Solution Solution by Brian Smith (2019-06-22 10:07:32)
Difficulty: 3 of 5Under Be the term-inator (in Just Math)
Posted on 2019-06-16 (6 Comments)
Some Thoughts Tightening the range by Brian Smith (2019-06-18 13:09:23)
Difficulty: 3 of 5Under A four number puzzle (in Just Math)
Posted on 2019-06-15 (5 Comments)
re: proposed solution by Brian Smith (2019-06-16 21:22:59)
Difficulty: 3 of 5Under Just Hangin' around (in Just Math)
Posted on 2019-06-14 (10 Comments)
Solution Solution by Brian Smith (2019-06-15 12:13:24)
Difficulty: 3 of 5Under Shooting submarine on a number line! (in Just Math)
Posted on 2019-06-08 (3 Comments)
Solution Solution by Brian Smith (2019-06-09 12:51:48)
Difficulty: 3 of 5Under Four at a time (in Numbers)
Posted on 2019-05-16 (1 Comments)
Solution Solution by Brian Smith (2020-05-23 17:16:00)
Difficulty: 4 of 5Under Three Orthogonal Chords (in Geometry)
Posted on 2019-05-10 (2 Comments)
re: Error in the problem? by Brian Smith (2019-05-13 23:26:03)
Difficulty: 4 of 5Under Diagonal mystery (in Geometry)
Posted on 2019-05-04 (3 Comments)
Solution Solution by Brian Smith (2019-05-05 15:41:20)
Difficulty: 4 of 5Under Rectangle pegs in a round hole (in Just Math)
Posted on 2019-04-28 (3 Comments)
Some Thoughts Possible solution by Brian Smith (2019-04-28 14:53:16)
Difficulty: 3 of 5Under Arithmetic prime (in Numbers)
Posted on 2019-04-25 (3 Comments)
re: computer solution - OEIS findings by Brian Smith (2019-04-26 01:21:09)
Difficulty: 3 of 5Under Seven positive numbers (in Numbers)
Posted on 2019-04-22 (2 Comments)
Solution Solution by Brian Smith (2023-03-02 13:11:03)
Difficulty: 3 of 5Under Distinct figures of Circle and Triangle (in Geometry)
Posted on 2019-04-21 (2 Comments)
Solution re: Some progress by Brian Smith (2019-07-05 13:22:06)
Some Thoughts Some progress by Brian Smith (2019-07-04 21:03:27)
Difficulty: 3 of 5Under Finding Quadratic (in Just Math)
Posted on 2019-04-12 (2 Comments)
Some Thoughts Another approach by Brian Smith (2019-04-15 11:59:51)
Difficulty: 2 of 5Under Just count them ! (in Just Math)
Posted on 2019-04-09 (2 Comments)
Solution Analytic Solution by Brian Smith (2019-04-09 12:05:54)
Difficulty: 3 of 5Under Matrixed Fibonacci (in Just Math)
Posted on 2019-04-08 (2 Comments)
Solution Analytic Solution by Brian Smith (2019-04-09 11:49:43)
Difficulty: 3 of 5Under Hot and Cold Cubes (in Science)
Posted on 2019-04-04 (6 Comments)
re: Missing info? Or solution? Example by Brian Smith (2019-04-04 23:35:17)
Difficulty: 4 of 5Under 6 is easy - 5 & 7 not quite ! (in Numbers)
Posted on 2019-03-31 (5 Comments)
Solution Is it really this simple? (Solution) by Brian Smith (2019-03-31 11:36:13)
Difficulty: 3 of 5Under Matrix rank? (in Just Math)
Posted on 2019-03-24 (1 Comments)
Solution Solution by Brian Smith (2019-03-24 13:06:55)
Difficulty: 3 of 5Under Sum of reciprocals (in Numbers)
Posted on 2019-03-20 (1 Comments)
Solution Solution by Brian Smith (2019-03-20 12:31:27)
Difficulty: 3 of 5Under Descartes roots (in Just Math)
Posted on 2019-03-17 (1 Comments)
Solution Solution by Brian Smith (2019-03-17 13:14:25)
Difficulty: 3 of 5Under Where is the center? (in Geometry)
Posted on 2019-03-15 (13 Comments)
Solution Solution by Brian Smith (2019-03-15 12:42:01)
Difficulty: 3 of 5Under 'Two' many roots (in Just Math)
Posted on 2019-03-14 (2 Comments)
Solution Solution by Brian Smith (2019-03-15 01:52:46)
Difficulty: 3 of 5Under Mean the roots (in Calculus)
Posted on 2019-03-13 (2 Comments)
Solution Solution by Brian Smith (2019-03-15 01:29:48)
Difficulty: 4 of 5Under A Golden Fraction (in Numbers)
Posted on 2019-03-12 (3 Comments)
Hints/Tips Research by Brian Smith (2019-03-15 11:44:38)
Difficulty: 3 of 5Under Shifting the digit (in Numbers)
Posted on 2019-03-11 (5 Comments)
Solution Analytic Solution by Brian Smith (2022-09-18 12:14:08)
Difficulty: 3 of 5Under Minimizing the Denominator (in Numbers)
Posted on 2019-03-08 (3 Comments)
Solution Analytic Solution by Brian Smith (2021-05-01 10:51:44)
Difficulty: 3 of 5Under The Great Comparison (in Numbers)
Posted on 2019-03-02 (6 Comments)
re(2): Solution - trying again by Brian Smith (2019-10-27 17:09:01)
Solution Solution by Brian Smith (2019-10-26 20:54:12)
Difficulty: 3 of 5Under And counting (in Numbers)
Posted on 2019-02-28 (4 Comments)
Solution Solution by Brian Smith (2019-03-02 01:41:47)
Difficulty: 3 of 5Under I squeeze, squeeze, and squeeze (in Geometry)
Posted on 2019-02-15 (4 Comments)
re: Possible solution by Brian Smith (2019-02-17 12:26:23)
Difficulty: 3 of 5Under 48th digit in the head (in Just Math)
Posted on 2019-01-30 (4 Comments)
Solution Solution by Brian Smith (2019-01-31 01:37:48)
Difficulty: 2 of 5Under Consistency parameter (in Just Math)
Posted on 2019-01-30 (3 Comments)
Solution Determinant solution by Brian Smith (2019-01-30 12:36:41)
Difficulty: 3 of 5Under Digit Hunting (in Just Math)
Posted on 2019-01-26 (4 Comments)
re: poor explanation by Brian Smith (2019-01-27 12:18:03)
Difficulty: 3 of 5Under Repunits (in Numbers)
Posted on 2019-01-22 (1 Comments)
Solution Solution by Brian Smith (2019-01-23 12:21:12)
Difficulty: 2 of 5Under 16 choices (in Just Math)
Posted on 2019-01-21 (5 Comments)
Solution Solution by Brian Smith (2019-01-21 23:33:09)
Difficulty: 3 of 5Under Grid nim: 2xN (in Games)
Posted on 2019-01-16 (8 Comments)
Hints/Tips re: Extended calculations part 2 by Brian Smith (2021-12-05 15:32:49)
Hints/Tips Extended calculations. by Brian Smith (2021-12-05 14:18:45)
Solution Solution by Brian Smith (2019-03-27 12:07:44)
Difficulty: 3 of 5Under Cover the rectangle (in Just Math)
Posted on 2019-01-10 (2 Comments)
Some Thoughts First try at it by Brian Smith (2019-01-10 23:55:10)
Difficulty: 3 of 5Under 2 sets with common members (in Numbers)
Posted on 2018-12-30 (3 Comments)
Hints/Tips re: solution by Brian Smith (2018-12-31 11:56:39)
Difficulty: 2 of 5Under Guessing the color (in Logic)
Posted on 2018-12-24 (2 Comments)
Solution Solution by Brian Smith (2018-12-25 23:03:30)
Difficulty: 3 of 5Under Complex (in Just Math)
Posted on 2018-12-22 (3 Comments)
Some Thoughts Differential equation by Brian Smith (2018-12-26 01:03:00)
Difficulty: 4 of 5Under Probably Acute (in Just Math)
Posted on 2018-12-21 (12 Comments)
Some Thoughts Research by Brian Smith (2018-12-25 13:54:30)
Difficulty: 4 of 5Under Hoops (in Just Math)
Posted on 2018-12-09 (2 Comments)
Some Thoughts Concentric Circles by Brian Smith (2018-12-16 21:27:51)
Difficulty: 3 of 5Under Too Small of an Angle (in Just Math)
Posted on 2018-11-11 (2 Comments)
Solution Solution by Brian Smith (2018-12-16 21:50:19)
Difficulty: 3 of 5Under Duelling pairs (in Games)
Posted on 2018-11-02 (16 Comments)
Solution Solution by Brian Smith (2019-07-04 20:28:27)
Difficulty: 3 of 5Under Attendance Records (in Numbers)
Posted on 2018-08-10 (4 Comments)
Solution Solution by Brian Smith (2018-08-11 17:57:31)
Difficulty: 4 of 5Under Call 911 (in Just Math)
Posted on 2018-08-03 (2 Comments)
Solution Solution by Brian Smith (2018-08-11 18:34:34)
Difficulty: 3 of 5Under Ten to five (in Numbers)
Posted on 2018-07-30 (7 Comments)
Hints/Tips This makes me hungry for pie... by Brian Smith (2018-08-11 18:03:56)
Difficulty: 4 of 5Under 15 letter 'words' (in Just Math)
Posted on 2018-01-11 (4 Comments)
Solution Analytic Solution by Brian Smith (2022-09-19 12:43:19)
Difficulty: 2 of 5Under Attributed to Lewis Carroll (in Probability)
Posted on 2017-11-07 (4 Comments)
re: Without replacement (spoiler) by Brian Smith (2017-11-07 12:52:31)
Difficulty: 3 of 5Under More than 3 cubes (in Just Math)
Posted on 2017-11-04 (1 Comments)
Solution No Subject by Brian Smith (2017-11-04 09:26:04)
Difficulty: 3 of 5Under No integer roots (in Just Math)
Posted on 2017-10-22 (4 Comments)
Solution Another approach by Brian Smith (2017-10-22 18:36:41)
Difficulty: 4 of 5Under 31 or more (in Games)
Posted on 2017-10-21 (6 Comments)
Solution A Simple Strategy by Brian Smith (2017-10-23 23:32:23)
Difficulty: 3 of 5Under SUM = PR0DUCT (in Numbers)
Posted on 2017-10-18 (3 Comments)
Solution Analytic Solution by Brian Smith (2017-10-18 12:02:57)
Difficulty: 3 of 5Under Two-three integers (in Numbers)
Posted on 2017-10-15 (6 Comments)
re(2): Analytic Solution by Brian Smith (2017-10-15 21:54:25)
Solution Analytic Solution by Brian Smith (2017-10-15 17:58:37)
Difficulty: 3 of 5Under Does it continue? 6: Partial sums (in Numbers)
Posted on 2017-09-25 (7 Comments)
Some Thoughts re: Notes by Brian Smith (2017-10-05 14:14:49)
Difficulty: 3 of 5Under Does it continue? 5: powers of 2 (in Numbers)
Posted on 2017-09-24 (6 Comments)
Solution Solution Showcasing Several Sequences by Brian Smith (2017-09-25 09:38:53)
Difficulty: 3 of 5Under Does it continue? 3: Growing table of primes (in Numbers)
Posted on 2017-09-19 (3 Comments)
A classic puzzle by Brian Smith (2017-09-19 23:23:09)
Difficulty: 4 of 5Under Product of 100 factorials (in Just Math)
Posted on 2017-09-07 (8 Comments)
Some Thoughts Smallest divisor by Brian Smith (2017-09-08 23:21:36)
Difficulty: 3 of 5Under Getting closer to your pie (in Numbers)
Posted on 2017-09-04 (10 Comments)
Some Thoughts Part c without trig by Brian Smith (2017-09-04 16:40:55)
Difficulty: 2 of 5Under Two sums of digits (in Just Math)
Posted on 2017-09-02 (5 Comments)
Solution re: Both at once - solutions by Brian Smith (2017-09-03 12:53:57)
Some Thoughts Both at once? by Brian Smith (2017-09-02 21:12:54)
Difficulty: 1 of 5Under Triangle in a triangle (in Shapes)
Posted on 2017-08-28 (4 Comments)
re: How about this one? by Brian Smith (2017-08-28 13:23:33)
Difficulty: 3 of 5Under Strobogrammatic to pandigital (in Numbers)
Posted on 2017-08-26 (4 Comments)
Hints/Tips An answer by Brian Smith (2017-08-26 09:01:52)
Difficulty: 2 of 5Under A pint, please. (in General)
Posted on 2017-08-20 (3 Comments)
Solution An international way by Brian Smith (2017-08-20 08:51:39)
Difficulty: 4 of 5Under Marbles in boxes (in Algorithms)
Posted on 2017-08-16 (5 Comments)
Some Thoughts re: solution - OEIS by Brian Smith (2017-08-17 11:11:25)
Difficulty: 3 of 5Under Bob and Alice make a poor choice (in Numbers)
Posted on 2017-08-11 (7 Comments)
Solution re: Method? by Brian Smith (2017-08-11 23:30:26)
re: solution (spoiler) - precision check by Brian Smith (2017-08-11 12:52:00)
Difficulty: 3 of 5Under Palindromic sum (in Just Math)
Posted on 2017-08-08 (3 Comments)
Hints/Tips Research findings by Brian Smith (2017-08-09 23:38:44)
Solution Solution using only two palindromes by Brian Smith (2017-08-09 23:22:50)
Difficulty: 2 of 5Under Nondivisibility by 11 (in Just Math)
Posted on 2017-08-06 (2 Comments)
Solution Solution by Brian Smith (2017-08-06 09:48:33)
Difficulty: 3 of 5Under From The Book of Squares (in Numbers)
Posted on 2017-07-26 (8 Comments)
Solution Solution by Brian Smith (2017-07-26 12:36:01)
Difficulty: 2 of 5Under From Mahavira (in Just Math)
Posted on 2017-07-18 (11 Comments)
Hints/Tips re(2): Simple Solution, simple-yes ... correct-Yes by Brian Smith (2017-07-19 08:45:40)
Solution Simple Solution by Brian Smith (2017-07-18 22:15:23)
Difficulty: 3 of 5Under Brazilian numbers (in Sequences)
Posted on 2017-07-15 (4 Comments)
Solution Part 1 Solution and more by Brian Smith (2017-07-15 09:49:24)
Difficulty: 2 of 5Under 4 options (in Probability)
Posted on 2017-07-10 (3 Comments)
Solution Solution by Brian Smith (2017-07-10 21:43:26)
Difficulty: 3 of 5Under Pythagorean H/L ratios (in Just Math)
Posted on 2017-07-08 (2 Comments)
Solution Another approach by Brian Smith (2017-07-09 00:05:16)
Difficulty: 2 of 5Under Larger area / larger perimeter (in Numbers)
Posted on 2017-07-03 (3 Comments)
Solution Analytic Solution by Brian Smith (2017-07-03 23:35:42)
Difficulty: 4 of 5Under 2 kids 3 boxes (in Games)
Posted on 2017-07-01 (1 Comments)
Solution Solution by Brian Smith (2017-07-01 22:15:03)
Difficulty: 2 of 5Under Giveaway ratios (in Numbers)
Posted on 2017-06-26 (3 Comments)
Solution Solution by Brian Smith (2017-06-26 08:34:42)
Difficulty: 3 of 5Under 2017 to start with (in Numbers)
Posted on 2017-06-23 (7 Comments)
re(3): computer results (spoilers) extended by Brian Smith (2017-06-24 17:49:15)
Difficulty: 4 of 5Under Rational number's conversion (in Just Math)
Posted on 2017-06-18 (5 Comments)
Solution Solution by Brian Smith (2017-06-18 20:46:01)
Some Thoughts re: Partial solution by Brian Smith (2017-06-18 12:31:58)
Some Thoughts Partial solution by Brian Smith (2017-06-18 10:52:24)
Difficulty: 3 of 5Under Ulam numbers (in Numbers)
Posted on 2017-06-03 (5 Comments)
What the OEIS says by Brian Smith (2017-06-04 09:42:56)
Difficulty: 3 of 5Under Empty the bucket (in Logic)
Posted on 2017-05-29 (12 Comments)
Some Thoughts re: Still stumped by Brian Smith (2017-06-03 11:14:55)
Difficulty: 3 of 5Under Seven Region Partition (in Shapes)
Posted on 2017-05-27 (3 Comments)
re: Solution? by Brian Smith (2017-05-28 10:31:08)
Difficulty: 4 of 5Under Oleg or Erdös? (in Games)
Posted on 2017-05-26 (8 Comments)
Thoughts by Brian Smith (2017-05-27 09:56:49)
Difficulty: 3 of 5Under Higher Powers of Eleven (in Numbers)
Posted on 2017-05-24 (4 Comments)
Solution Analytic Solution by Brian Smith (2017-05-26 11:36:24)
Difficulty: 2 of 5Under Four balls (in Probability)
Posted on 2017-05-19 (22 Comments)
re: There is only one correct answer !....SPOILER by Brian Smith (2017-05-22 12:05:40)
re(5): Who's right by Brian Smith (2017-05-21 23:17:59)
Hints/Tips re(3): Who's right by Brian Smith (2017-05-21 17:15:20)
Solution Solution by Brian Smith (2017-05-19 12:43:07)
Difficulty: 3 of 5Under Twice blind (in Numbers)
Posted on 2017-05-14 (2 Comments)
Dejavu by Brian Smith (2017-05-14 09:24:47)
Difficulty: 3 of 5Under Dirichlet sends his regards (in Logic)
Posted on 2017-05-12 (5 Comments)
Solution re: A guess - A proof by Brian Smith (2017-05-12 13:28:20)
Difficulty: 3 of 5Under The length of the belt (in Geometry)
Posted on 2017-05-09 (6 Comments)
Solution re: Raising the difficulty to 3 - Full Solution by Brian Smith (2017-05-12 11:23:49)
Difficulty: 3 of 5Under No software allowed ! (in Numbers)
Posted on 2017-05-07 (9 Comments)
re: New solutions not relatively prime by Brian Smith (2017-05-07 19:45:56)
Solution Solution by Brian Smith (2017-05-07 10:09:40)
Difficulty: 3 of 5Under Pandigital + (in Probability)
Posted on 2017-05-03 (3 Comments)
Hints/Tips re: Matrix solution - Diagonalization and a closed form function by Brian Smith (2017-05-04 12:23:54)
Solution Matrix solution by Brian Smith (2017-05-04 09:57:29)
Difficulty: 2 of 5Under A cent or more? (in Probability)
Posted on 2017-05-01 (2 Comments)
Coin distribution by Brian Smith (2017-05-01 10:25:44)
Difficulty: 3 of 5Under Eat as eat can (in Numbers)
Posted on 2017-04-28 (2 Comments)
Solution Answers for each species by Brian Smith (2017-04-28 23:33:56)
Difficulty: 3 of 5Under Baker to butcher to baker (in Just Math)
Posted on 2017-04-27 (2 Comments)
Solution Solution by Brian Smith (2017-04-27 23:33:04)
Difficulty: 3 of 5Under Driven by greed (in General)
Posted on 2017-04-26 (2 Comments)
Solution I got a good haul by Brian Smith (2017-04-26 10:09:47)
Difficulty: 4 of 5Under e as a pandigital expression (in Numbers)
Posted on 2017-04-23 (2 Comments)
Solution Solution using a Limit by Brian Smith (2017-04-23 12:46:45)
Difficulty: 3 of 5Under Maxim, Minerva & Kangaroo (in Numbers)
Posted on 2017-04-22 (4 Comments)
Solution Solution by Brian Smith (2017-04-22 12:59:24)
Difficulty: 3 of 5Under Cryptajoke XVII (in Numbers)
Posted on 2017-04-21 (6 Comments)
Solution Two Answers by Brian Smith (2017-04-21 09:55:24)
Difficulty: 3 of 5Under Is it a conic? (in Geometry)
Posted on 2017-04-19 (7 Comments)
Solution Another approach by Brian Smith (2017-04-20 23:41:14)
Difficulty: 2 of 5Under A factorial in seconds (in Numbers)
Posted on 2017-04-18 (7 Comments)
Solution Analytic Solution by Brian Smith (2017-04-18 09:49:54)
Difficulty: 2 of 5Under Sticks in a Cube (in Shapes)
Posted on 2017-04-11 (3 Comments)
re: Solution by Brian Smith (2017-04-14 09:29:30)
Difficulty: 3 of 5Under Names in Boxes (in Logic)
Posted on 2017-04-09 (15 Comments)
re(2): Loops by Brian Smith (2017-04-12 13:08:19)
Solution Loops by Brian Smith (2017-04-12 10:11:43)
Difficulty: 3 of 5Under Excellent numbers (in Numbers)
Posted on 2017-04-08 (3 Comments)
Hints/Tips Going further by Brian Smith (2017-04-09 14:59:16)
Solution 12 digit excellence by Brian Smith (2017-04-08 21:43:59)
Difficulty: 2 of 5Under Y ask about Y ? (in Numbers)
Posted on 2017-04-04 (7 Comments)
re(2): Another approach by Brian Smith (2017-04-13 09:22:02)
Solution Another approach by Brian Smith (2017-04-04 12:25:42)
Difficulty: 2 of 5Under S.o.S is S (in Numbers)
Posted on 2017-04-03 (6 Comments)
Solution Cannonball! by Brian Smith (2017-04-03 23:34:59)
Difficulty: 3 of 5Under Prime power puzzle (in Just Math)
Posted on 2017-04-01 (9 Comments)
Hints/Tips Found Five by Brian Smith (2017-04-02 21:17:20)
Difficulty: 4 of 5Under Murder in the Castle (in Logic)
Posted on 2017-03-30 (4 Comments)
Solution re: (a not so) little hint - My solution by Brian Smith (2017-04-30 13:07:49)
Difficulty: 3 of 5Under The sum of 2016 terms (in Sequences)
Posted on 2017-03-21 (1 Comments)
Solution Solution by Brian Smith (2017-03-21 09:42:36)
Difficulty: 3 of 5Under Same side story (in Probability)
Posted on 2017-03-16 (5 Comments)
Hints/Tips A classic puzzle by Brian Smith (2017-03-29 13:37:53)
Difficulty: 3 of 5Under Equality? Yes, but not exactly... (in Numbers)
Posted on 2017-03-14 (1 Comments)
Solution Solution by Brian Smith (2017-03-14 11:03:31)
Difficulty: 2 of 5Under Three heights in a triangle (in Geometry)
Posted on 2017-03-11 (2 Comments)
Solution Answer by Brian Smith (2017-03-21 09:33:08)
Difficulty: 3 of 5Under 1 progression, 2 sums, 3 numbers (in Just Math)
Posted on 2017-03-09 (1 Comments)
Solution Solution by Brian Smith (2017-03-09 10:44:30)
Difficulty: 3 of 5Under Problem on its own (in Geometry)
Posted on 2017-03-05 (1 Comments)
Solution So simple! by Brian Smith (2017-05-05 11:49:11)
Difficulty: 3 of 5Under Integer triplets (in Just Math)
Posted on 2017-02-21 (4 Comments)
Solution Solution by Brian Smith (2017-02-22 10:03:47)
Difficulty: 3 of 5Under The toll of two cities (in Geometry)
Posted on 2017-02-20 (1 Comments)
Solution Solution by Brian Smith (2017-02-20 10:08:15)
Difficulty: 3 of 5Under S.O.S. is not a prime (in Numbers)
Posted on 2017-02-15 (1 Comments)
Some Thoughts Factorization by Brian Smith (2018-12-15 23:48:14)
Difficulty: 3 of 5Under Odds are ... (in Probability)
Posted on 2017-02-14 (11 Comments)
Hints/Tips A related problem which resolves part 2. by Brian Smith (2017-02-14 11:27:25)
Difficulty: 2 of 5Under Integer couples (in Numbers)
Posted on 2017-02-06 (1 Comments)
Dejavu by Brian Smith (2017-02-06 09:42:00)
Difficulty: 3 of 5Under T better than S (in Famous Riddles)
Posted on 2017-02-02 (3 Comments)
Solution Answer by Brian Smith (2017-02-02 09:20:05)
Difficulty: 4 of 5Under A false conjecture (in Numbers)
Posted on 2017-01-27 (7 Comments)
Hints/Tips I found it! by Brian Smith (2017-01-29 13:49:28)
Difficulty: 3 of 5Under Powers of x and y (in Just Math)
Posted on 2017-01-21 (4 Comments)
Solution Solution by Brian Smith (2017-01-21 14:58:35)
Difficulty: 3 of 5Under An interesting recurrence (in Numbers)
Posted on 2017-01-17 (5 Comments)
A number worth looking for? by Brian Smith (2017-01-17 23:22:51)
Difficulty: 3 of 5Under (x−y)^ n = xy (in Just Math)
Posted on 2017-01-07 (2 Comments)
Solution Solution by Brian Smith (2017-01-07 20:44:53)
Difficulty: 4 of 5Under Congruent Incircles (in Geometry)
Posted on 2017-01-01 (6 Comments)
re: Solution by construction by Brian Smith (2017-01-01 19:04:14)
Difficulty: 3 of 5Under Sphere-Cone (in Calculus)
Posted on 2016-12-25 (2 Comments)
Solution Solution by Brian Smith (2016-12-25 12:33:20)
Difficulty: 4 of 5Under No change in its value (in Numbers)
Posted on 2016-12-23 (1 Comments)
Solution Printer's Error Numbers by Brian Smith (2017-07-01 13:30:46)
Difficulty: 2 of 5Under Same Real Roots (in Just Math)
Posted on 2016-12-10 (2 Comments)
Solution Solution by Brian Smith (2016-12-10 09:54:13)
Difficulty: 2 of 5Under composite function (in Calculus)
Posted on 2016-11-29 (2 Comments)
Solution Solution by Brian Smith (2016-11-29 11:05:23)
Difficulty: 2 of 5Under Prime repunits (in Numbers)
Posted on 2016-11-24 (6 Comments)
Solution Solution by Brian Smith (2018-12-15 22:42:37)
Some Thoughts Almost a proof by Brian Smith (2016-11-24 21:14:05)
Difficulty: 3 of 5Under On the same floor (in Just Math)
Posted on 2016-11-22 (13 Comments)
Solution Solutions per Integer by Brian Smith (2016-11-22 13:37:25)
Difficulty: 1 of 5Under Don't be confused (in General)
Posted on 2016-11-14 (5 Comments)
Solution Solution by Brian Smith (2016-11-14 11:13:44)
Difficulty: 3 of 5Under Matrix Mathematics (in Just Math)
Posted on 2016-10-30 (1 Comments)
Solution Solution by Brian Smith (2016-10-30 10:07:00)
Difficulty: 3 of 5Under Rationality certification (in Just Math)
Posted on 2016-10-27 (2 Comments)
Some Thoughts sqrt(a) is rational by Brian Smith (2016-10-28 10:37:30)
Difficulty: 4 of 5Under Inequality challenge (in Just Math)
Posted on 2016-10-25 (4 Comments)
Some Thoughts Approaching sqrt(3) by Brian Smith (2016-11-20 10:57:55)
Solution re(2): Thoughts...Hints...Proof by Brian Smith (2016-11-19 12:18:00)
Thoughts by Brian Smith (2016-11-16 12:40:04)
Difficulty: 3 of 5Under A little twist (in Just Math)
Posted on 2016-10-21 (4 Comments)
Solution Analytic Solution by Brian Smith (2017-05-05 09:56:47)
Difficulty: 3 of 5Under Ratio Resolution IV (in Weights and Scales)
Posted on 2016-10-20 (4 Comments)
Solution re: Solution - correction by Brian Smith (2022-08-21 11:21:23)
Solution Solution by Brian Smith (2017-07-24 20:27:09)
Difficulty: 3 of 5Under Positively Positive (in Just Math)
Posted on 2016-10-18 (10 Comments)
Solution Solution by Brian Smith (2023-12-23 22:12:29)
Difficulty: 3 of 5Under Bridge Cross Baffle (in Logic)
Posted on 2016-10-10 (3 Comments)
Solution Comparing methods by Brian Smith (2016-10-10 12:38:04)
Difficulty: 3 of 5Under Nine Hexominos in a Square (in Shapes)
Posted on 2016-10-07 (2 Comments)
re: Request for hint by Brian Smith (2016-10-09 18:02:37)
Difficulty: 3 of 5Under Random Trial (in Algorithms)
Posted on 2016-10-02 (3 Comments)
Some Thoughts My approach by Brian Smith (2016-12-31 23:33:43)
Difficulty: 3 of 5Under Lopsided T-Hexomino (in Shapes)
Posted on 2016-09-09 (2 Comments)
re: Request for a hint (Spoiler) by Brian Smith (2016-09-11 15:10:20)
Difficulty: 3 of 5Under Form Finding From Solution (in Just Math)
Posted on 2016-09-05 (2 Comments)
re: seems to be a solution by Brian Smith (2016-09-05 12:56:31)
Difficulty: 3 of 5Under Bonne chance (in Logic)
Posted on 2016-09-02 (2 Comments)
Solution Solving Backwards by Brian Smith (2016-09-03 11:09:25)
Difficulty: 3 of 5Under Polygon Area Ponder (in Shapes)
Posted on 2016-09-01 (2 Comments)
re: Solution by Brian Smith (2016-09-01 23:17:59)
Difficulty: 3 of 5Under Ten L-Hexominos (in Shapes)
Posted on 2016-08-31 (3 Comments)
Hints/Tips re: I'd like a hint by Brian Smith (2016-09-01 23:13:34)
Difficulty: 3 of 5Under Complex Number and Positive Integer Poser (in Just Math)
Posted on 2016-08-27 (1 Comments)
Solution Solution by Brian Smith (2017-07-16 23:16:42)
Difficulty: 3 of 5Under All rational numbers in (in Sequences)
Posted on 2016-08-26 (10 Comments)
OEIS by Brian Smith (2016-08-27 10:46:54)
Difficulty: 2 of 5Under Business is business (in Word Problems)
Posted on 2016-08-24 (7 Comments)
Solution ThE AnSWER by Brian Smith (2016-08-24 11:19:28)
Difficulty: 2 of 5Under Estimate a percentage (in Numbers)
Posted on 2016-08-22 (6 Comments)
Some Thoughts Some help from the OEIS by Brian Smith (2017-07-16 23:50:46)
Some Thoughts re: A simple upperbound by Brian Smith (2017-07-16 23:38:06)
Difficulty: 3 of 5Under Diophantine Pair Decision (in Just Math)
Posted on 2016-08-13 (3 Comments)
Hints/Tips OEIS to save the day! by Brian Smith (2016-08-13 21:44:57)
Difficulty: 3 of 5Under Insect Jump Illation (in Just Math)
Posted on 2016-08-09 (1 Comments)
Some research by Brian Smith (2016-10-30 18:25:24)
Difficulty: 3 of 5Under Unearthing Units Digit (in Just Math)
Posted on 2016-08-09 (1 Comments)
Solution Solution by Brian Smith (2017-05-05 23:23:10)
Difficulty: 3 of 5Under Find additional pairs (in Just Math)
Posted on 2016-08-08 (5 Comments)
Solution Pell Solution by Brian Smith (2016-08-09 00:11:46)
Difficulty: 3 of 5Under Binomial GCDs (in Just Math)
Posted on 2016-08-08 (3 Comments)
Solution Solution by Brian Smith (2022-09-30 12:34:08)
Difficulty: 3 of 5Under Quadratic and Linear (in Just Math)
Posted on 2016-08-03 (2 Comments)
Solution Solution by Brian Smith (2017-07-02 22:44:38)
Difficulty: 3 of 5Under Square in a Cone (in Shapes)
Posted on 2016-07-29 (2 Comments)
Some Thoughts Thoughts by Brian Smith (2016-07-30 11:00:40)
Difficulty: 3 of 5Under 15 Triominoes (in Shapes)
Posted on 2016-07-26 (4 Comments)
re: Harder case by Brian Smith (2016-07-27 11:19:17)
Difficulty: 3 of 5Under Table Partition Trial (in Shapes)
Posted on 2016-07-24 (3 Comments)
Some Thoughts 10/11 of the other pentominoes by Brian Smith (2016-07-24 13:06:13)
Difficulty: 3 of 5Under Right and Left Digits (in Just Math)
Posted on 2016-07-17 (1 Comments)
Solution Solution by Brian Smith (2016-07-17 21:51:53)
Difficulty: 3 of 5Under Triangle Cover Treat (in Shapes)
Posted on 2016-07-16 (3 Comments)
Solution Solution by Brian Smith (2016-07-16 10:48:42)
Difficulty: 3 of 5Under Sixty Settlement (in Just Math)
Posted on 2016-07-14 (1 Comments)
Solution Solution from another problem by Brian Smith (2016-07-14 09:54:55)
Difficulty: 3 of 5Under Base N Perfect Square Poser (in Just Math)
Posted on 2016-07-13 (2 Comments)
Solution Solution by Brian Smith (2016-07-14 09:44:30)
Difficulty: 2 of 5Under Prove SG's theorem (in Just Math)
Posted on 2016-07-12 (3 Comments)
Solution Factoring Solution by Brian Smith (2016-07-12 10:59:44)
Difficulty: 3 of 5Under Sum Reals, Get Integer (in Just Math)
Posted on 2016-07-09 (3 Comments)
Solution Solution by Brian Smith (2016-07-09 11:27:56)
Difficulty: 3 of 5Under Not too high, not too low (in Just Math)
Posted on 2016-07-06 (3 Comments)
Some Thoughts Quick Thought by Brian Smith (2016-07-06 12:17:06)
Difficulty: 2 of 5Under Fibonacci yields Pythagoras (in Sequences)
Posted on 2016-07-05 (1 Comments)
Solution Solution by Brian Smith (2016-07-05 12:58:14)
Difficulty: 3 of 5Under S.O.D = cube root (in Numbers)
Posted on 2016-07-04 (3 Comments)
Some Thoughts OEIS by Brian Smith (2016-07-04 22:20:38)
Difficulty: 3 of 5Under Lattice Vertices Verification (in Shapes)
Posted on 2016-07-02 (4 Comments)
Solution re(2): Solution by Brian Smith (2016-07-03 09:47:42)
Solution Solution by Brian Smith (2016-07-02 12:01:29)
Difficulty: 3 of 5Under Line Length from Two Triangles (in Shapes)
Posted on 2016-07-01 (4 Comments)
re: Unresolved by Brian Smith (2016-07-04 12:32:51)
Difficulty: 3 of 5Under Angle Ratio Ascertainment 4 (in Shapes)
Posted on 2016-06-26 (1 Comments)
Thoughts by Brian Smith (2016-06-27 09:23:48)
Difficulty: 3 of 5Under Covering a Square (in Shapes)
Posted on 2016-06-24 (2 Comments)
Some Thoughts One arrangment by Brian Smith (2016-06-24 11:03:33)
Difficulty: 3 of 5Under Three Integer Root Sum (in Just Math)
Posted on 2016-06-22 (2 Comments)
Solution Solution by Brian Smith (2016-06-22 10:17:01)
Difficulty: 3 of 5Under Go for the midpoint (in Geometry)
Posted on 2016-06-18 (4 Comments)
Solution from another problem by Brian Smith (2016-06-18 10:16:27)
Difficulty: 3 of 5Under Real Variable Validation (in Just Math)
Posted on 2016-06-11 (4 Comments)
Solution Solution by Brian Smith (2016-06-11 11:29:27)
Difficulty: 3 of 5Under Four Digit Combination Conclusion (in Sequences)
Posted on 2016-05-18 (2 Comments)
Solution Faster solution by Brian Smith (2023-08-27 20:34:26)
Difficulty: 2 of 5Under Grid exercise (in Just Math)
Posted on 2016-05-18 (2 Comments)
Solution Solution by Brian Smith (2016-05-18 11:58:48)
Difficulty: 3 of 5Under Binomial Baffle 2 (in Just Math)
Posted on 2016-05-15 (2 Comments)
Solution Solution by Brian Smith (2016-05-15 11:20:47)
Difficulty: 2 of 5Under Easy Victory (in Numbers)
Posted on 2016-05-13 (1 Comments)
Solution Working Backwards by Brian Smith (2016-05-14 14:21:45)
Difficulty: 2 of 5Under You'll be surprised (in Numbers)
Posted on 2016-05-03 (5 Comments)
Solution Solution by Brian Smith (2016-05-03 09:43:15)
Difficulty: 3 of 5Under Quadratic and Perfect Square Query (in Just Math)
Posted on 2016-04-30 (2 Comments)
Solution Solution by Brian Smith (2016-07-22 23:53:36)
Difficulty: 3 of 5Under The heavy couple (in Weights and Scales)
Posted on 2016-04-22 (5 Comments)
Hints/Tips My method by Brian Smith (2016-04-23 10:24:46)
Difficulty: 3 of 5Under An educated guess (in Probability)
Posted on 2016-04-18 (7 Comments)
Some Thoughts Referencing another problem by Brian Smith (2016-04-18 10:02:16)
Difficulty: 3 of 5Under Complex Ratio and Number Resolution (in Sequences)
Posted on 2016-04-13 (2 Comments)
Some Thoughts re: computer assisted solution by Brian Smith (2016-04-13 23:15:18)
Difficulty: 3 of 5Under 1 to 9 concatenation (in Numbers)
Posted on 2016-04-12 (8 Comments)
Solution Analytic Answer by Brian Smith (2016-04-12 12:15:00)
Difficulty: 3 of 5Under The only odd untouchable (in Numbers)
Posted on 2016-04-12 (1 Comments)
Solution Goldbach Solution by Brian Smith (2016-04-12 12:37:55)
Difficulty: 3 of 5Under Real Root Product (in Just Math)
Posted on 2016-04-09 (1 Comments)
Solution Solution by Brian Smith (2016-04-09 11:25:23)
Difficulty: 2 of 5Under Circle Line Length (in Shapes)
Posted on 2016-04-07 (3 Comments)
Solution Solution by Brian Smith (2016-04-08 11:24:15)
Difficulty: 2 of 5Under Tenacious Divisibility Treat (in Just Math)
Posted on 2016-04-06 (10 Comments)
Solution Help from a negative (solution) by Brian Smith (2016-04-06 10:30:14)
Difficulty: 3 of 5Under Complex Number Query (in Just Math)
Posted on 2016-04-03 (2 Comments)
Solution Solution (An easier way) by Brian Smith (2022-05-27 09:56:20)
Difficulty: 3 of 5Under Nonconstant Product (in Just Math)
Posted on 2016-04-02 (3 Comments)
Solution Solution by Brian Smith (2016-04-03 09:31:26)
Difficulty: 3 of 5Under Harmonic Harmony 2 (in Sequences)
Posted on 2016-03-31 (2 Comments)
A failed attempt by Brian Smith (2017-04-17 00:18:13)
Difficulty: 3 of 5Under What's our problem? (in Numbers)
Posted on 2016-03-30 (1 Comments)
Solution Solving Backwards by Brian Smith (2016-03-30 13:15:32)
Difficulty: 3 of 5Under Star-shaped polyominos (in Shapes)
Posted on 2016-03-28 (7 Comments)
Solution Part E by Brian Smith (2016-03-29 10:43:39)
Some Thoughts Parts A through D by Brian Smith (2016-03-28 23:18:44)
Difficulty: 2 of 5Under 1+4=5 (in Just Math)
Posted on 2016-03-28 (2 Comments)
Solution No Subject by Brian Smith (2016-03-28 13:00:37)
Difficulty: 3 of 5Under Quadratic and Quintic Query (in Just Math)
Posted on 2016-03-26 (2 Comments)
Some Thoughts A start by Brian Smith (2016-03-26 09:41:44)
Difficulty: 3 of 5Under Sum from Arithmetic and Geometric (in Sequences)
Posted on 2016-03-24 (5 Comments)
re: Possible Solution by Brian Smith (2016-03-24 13:52:42)
Difficulty: 3 of 5Under Minimizing n (in Numbers)
Posted on 2016-03-23 (2 Comments)
A start by Brian Smith (2016-03-23 12:05:24)
Difficulty: 3 of 5Under Nonnegative Integer Decision Poser (in Just Math)
Posted on 2016-03-22 (1 Comments)
Solution Solution by Brian Smith (2016-03-22 13:54:30)
Difficulty: 2 of 5Under Neighbors or not? (in Probability)
Posted on 2016-03-22 (3 Comments)
Solution Solution by Brian Smith (2016-03-22 13:25:51)
Difficulty: 3 of 5Under Insert Zero (in Numbers)
Posted on 2016-03-21 (5 Comments)
Solution Solution by Brian Smith (2016-03-21 12:25:37)
Difficulty: 3 of 5Under Rational Value Validation (in Just Math)
Posted on 2016-03-20 (11 Comments)
re(2): cardinality of solution set by Brian Smith (2016-03-21 11:38:39)
Difficulty: 3 of 5Under Matrix Product Poser (in Just Math)
Posted on 2016-03-19 (3 Comments)
Family of Solutions by Brian Smith (2016-03-21 23:16:52)
Solution Orthogonal Diagonalization by Brian Smith (2016-03-19 14:58:46)
Solution Diagonalization Solution by Brian Smith (2016-03-19 10:57:04)
Difficulty: 4 of 5Under Not so trivial (in Numbers)
Posted on 2016-03-18 (6 Comments)
re(2): Parity Solution @Brian by Brian Smith (2016-03-24 11:44:30)
Solution Parity Solution by Brian Smith (2016-03-18 23:47:02)
Difficulty: 3 of 5Under Never 0 mod 3 (in Probability)
Posted on 2016-03-17 (7 Comments)
re(5): Solution by Brian Smith (2016-03-17 23:31:12)
Solution Solution by Brian Smith (2016-03-17 14:05:35)
Difficulty: 2 of 5Under Find number and base (in Numbers)
Posted on 2016-03-17 (6 Comments)
Some Thoughts Off the cuff solution by Brian Smith (2016-03-17 10:42:48)
Difficulty: 3 of 5Under Minimal cardinality (in Numbers)
Posted on 2016-03-16 (3 Comments)
Solution Solution by Brian Smith (2016-03-16 10:34:44)
Difficulty: 3 of 5Under Same area (in Shapes)
Posted on 2016-03-15 (2 Comments)
Solution Solution by Brian Smith (2016-03-16 12:17:27)
Difficulty: 3 of 5Under Countable sets (in Just Math)
Posted on 2016-03-15 (8 Comments)
re(3): Interesting by Brian Smith (2016-03-16 12:04:02)
re: Interesting by Brian Smith (2016-03-16 10:17:19)
Some Thoughts Sets of all Rationals (Parts 2 and 3) by Brian Smith (2016-03-15 12:10:44)
Some Thoughts Set of all Integers (Part 1 Solution) by Brian Smith (2016-03-15 10:45:23)
Difficulty: 3 of 5Under Hexagon in Complex Plane (in Shapes)
Posted on 2016-03-13 (1 Comments)
Solution Solution by Brian Smith (2016-03-13 14:31:42)
Difficulty: 3 of 5Under Tetrahedron Volume Travail (in Shapes)
Posted on 2016-03-12 (1 Comments)
Solution Solution by Brian Smith (2016-03-12 12:44:21)
Difficulty: 3 of 5Under More bouncing (in Geometry)
Posted on 2016-03-09 (3 Comments)
re: proposed solution by Brian Smith (2016-03-10 00:00:24)
Difficulty: 3 of 5Under Rectangles and U Pentominos (in Shapes)
Posted on 2016-03-08 (4 Comments)
re(2): posible solution 2 by Brian Smith (2016-03-10 00:07:34)
Difficulty: 3 of 5Under Grape Consumption Conclusion (in Just Math)
Posted on 2016-03-08 (4 Comments)
Solution Solution with no ties by Brian Smith (2016-03-08 10:32:34)
re: I could win this contest (spoiler) by Brian Smith (2016-03-08 09:48:05)
Difficulty: 3 of 5Under 8th Term from Term Product (in Sequences)
Posted on 2016-03-07 (5 Comments)
Solution Solution by Brian Smith (2016-03-07 12:33:12)
Difficulty: 1 of 5Under d1 or more ? (in Numbers)
Posted on 2016-03-07 (4 Comments)
Solution My Analysis by Brian Smith (2016-03-07 10:20:44)
Difficulty: 3 of 5Under Sum Root Value (in Just Math)
Posted on 2016-03-05 (2 Comments)
Solution Solution by Brian Smith (2016-03-05 10:14:28)
Difficulty: 3 of 5Under Sum 2001 Terms (in Sequences)
Posted on 2016-02-27 (1 Comments)
Solution Solution by Brian Smith (2016-02-27 11:18:03)
Difficulty: 3 of 5Under Three Ways to Put a Square in a Triangle (in Shapes)
Posted on 2016-02-26 (8 Comments)
re: A guess and a question by Brian Smith (2016-02-26 13:47:52)
Difficulty: 3 of 5Under My four numbers (in Just Math)
Posted on 2016-02-24 (12 Comments)
re(4): Solution with Analysis by Brian Smith (2016-02-25 13:57:36)
Solution Solution with Analysis by Brian Smith (2016-02-24 23:59:05)
Difficulty: 3 of 5Under Cheese Cut Conclusion (in Shapes)
Posted on 2016-02-23 (2 Comments)
Solution A couple of different ways by Brian Smith (2016-02-23 12:12:50)
Difficulty: 1 of 5Under Trapezoid Length Trial (in Shapes)
Posted on 2016-02-21 (1 Comments)
Solution Solution by Brian Smith (2016-02-21 14:09:24)
Difficulty: 3 of 5Under Perimeter from Double-cones (in Shapes)
Posted on 2016-02-20 (3 Comments)
re: Solution by Brian Smith (2016-02-23 12:53:07)
Difficulty: 3 of 5Under Fifty-fifty? (in Probability)
Posted on 2016-02-18 (2 Comments)
Solution Solution by Brian Smith (2016-02-18 11:41:46)
Difficulty: 2 of 5Under 25 * 1 (in Just Math)
Posted on 2016-02-18 (3 Comments)
re: solution - what about these? by Brian Smith (2016-02-18 11:30:30)
Difficulty: 2 of 5Under 2017 Term Trial (in Just Math)
Posted on 2016-02-17 (1 Comments)
Solution Solution by Brian Smith (2016-02-17 11:08:24)
Difficulty: 3 of 5Under 1-2-3 Remainder Resolution (in Logic)
Posted on 2016-02-16 (12 Comments)
re: my way - final answers by Brian Smith (2016-02-16 12:51:18)
Difficulty: 3 of 5Under Big difference (in Numbers)
Posted on 2016-02-14 (4 Comments)
re(2): computer solutions by Brian Smith (2016-02-14 17:54:31)
Difficulty: 3 of 5Under Integer Illation From Divisibility (in Just Math)
Posted on 2016-02-13 (1 Comments)
Solution Solution by Brian Smith (2016-02-13 12:56:33)
Difficulty: 2 of 5Under Interesting representation (in Numbers)
Posted on 2016-02-08 (6 Comments)
Solution Solution by Brian Smith (2016-02-28 19:15:30)
Difficulty: 2 of 5Under Fifty-fifty (in Just Math)
Posted on 2016-02-05 (2 Comments)
Solution Solution by Brian Smith (2016-02-05 09:53:41)
Difficulty: 3 of 5Under Mille and Remainder Resolution (in Sequences)
Posted on 2016-02-01 (3 Comments)
Some Thoughts re: spoiler solution; can it clue toward the intended method? by Brian Smith (2016-02-02 10:45:39)
Difficulty: 4 of 5Under The real McCoy (in Weights and Scales)
Posted on 2016-01-29 (1 Comments)
Solution Solution by Brian Smith (2016-01-30 09:37:21)
Difficulty: 3 of 5Under Integer Illation From Divisors (in Just Math)
Posted on 2016-01-27 (2 Comments)
Solution Solution by Brian Smith (2016-01-27 10:02:01)
Difficulty: 3 of 5Under Three Jar Trial (in Weights and Scales)
Posted on 2016-01-25 (4 Comments)
re: Determing n by Brian Smith (2016-01-25 23:23:51)
Solution Solution by Brian Smith (2016-01-25 12:00:55)
Difficulty: 4 of 5Under Pumpkins 6 (in Numbers)
Posted on 2016-01-22 (11 Comments)
re(7): Analytical solution (Bonus puzzle question) by Brian Smith (2016-02-03 11:11:43)
re(4): Analytical solution (Bonus puzzle question) by Brian Smith (2016-01-28 10:43:00)
re: Analytical solution (Bonus puzzle question) by Brian Smith (2016-01-26 00:31:52)
re: Analytical solution by Brian Smith (2016-01-23 11:06:42)
Difficulty: 3 of 5Under Hypotenuse from Cone (in Shapes)
Posted on 2016-01-22 (2 Comments)
Solution Solution by Brian Smith (2016-01-22 09:51:40)
Difficulty: 3 of 5Under Three Power Verification (in Just Math)
Posted on 2016-01-20 (4 Comments)
Proved in 1978 by Brian Smith (2016-01-21 11:01:09)
Difficulty: 3 of 5Under 9 coins prob (in Weights and Scales)
Posted on 2016-01-18 (6 Comments)
re(2): Two preplanned weighings by Brian Smith (2016-01-19 10:04:00)
Solution Two preplanned weighings by Brian Smith (2016-01-18 23:22:11)
Difficulty: 3 of 5Under Composite Integer Conclusion (in Just Math)
Posted on 2016-01-18 (2 Comments)
Solution Solution by Brian Smith (2016-01-18 11:53:55)
Difficulty: 4 of 5Under Product equals sum (in Just Math)
Posted on 2016-01-17 (6 Comments)
Solution re: A continuation by Brian Smith (2016-01-18 10:47:17)
Difficulty: 3 of 5Under Infinite Illation Decision 2 (in Just Math)
Posted on 2016-01-15 (6 Comments)
Some Thoughts Preliminary search and the OEIS sequence by Brian Smith (2016-01-15 13:01:56)
Difficulty: 3 of 5Under Maximum Value Muse (in Just Math)
Posted on 2016-01-14 (10 Comments)
re: A better try by Brian Smith (2016-03-02 00:14:27)
Some Thoughts Square Thoughts by Brian Smith (2016-01-15 09:46:53)
Difficulty: 3 of 5Under 6 coins (in Weights and Scales)
Posted on 2016-01-13 (10 Comments)
Solution Solution by Brian Smith (2016-01-13 11:26:07)
Difficulty: 4 of 5Under Primevens and primeodds (in Numbers)
Posted on 2016-01-10 (8 Comments)
Some Thoughts OEIS sequences by Brian Smith (2016-01-12 11:23:22)
Difficulty: 3 of 5Under Tan Settlement (in Shapes)
Posted on 2016-01-09 (3 Comments)
Brocard Angle by Brian Smith (2016-01-11 13:51:42)
Solution A lot of Sine work (Solution) by Brian Smith (2016-01-11 12:58:15)
Difficulty: 3 of 5Under Two hexagons (in Just Math)
Posted on 2016-01-07 (3 Comments)
Solution Simple Solution by Brian Smith (2016-06-25 23:50:38)
Difficulty: 4 of 5Under Restricted Rook Runaround (in Games)
Posted on 2016-01-05 (7 Comments)
re: Open question by Brian Smith (2016-01-11 10:36:20)
Difficulty: 3 of 5Under Twenty deposits (in Just Math)
Posted on 2016-01-04 (4 Comments)
Solution Solution by Brian Smith (2016-01-05 12:18:08)
Difficulty: 3 of 5Under Area from Square Areas (in Shapes)
Posted on 2016-01-02 (1 Comments)
Solution Solution by Brian Smith (2016-01-02 10:24:34)
Difficulty: 3 of 5Under One of Sixteen (in Weights and Scales)
Posted on 2015-12-29 (12 Comments)
re: What's the problem? (and a spoiler) by Brian Smith (2015-12-31 13:06:07)
Difficulty: 3 of 5Under Expression and Perfect Square 2 (in Just Math)
Posted on 2015-12-25 (3 Comments)
Some Thoughts re: Two small solutions and a conjecture by Brian Smith (2015-12-26 13:50:47)
Some Thoughts Two small solutions and a conjecture by Brian Smith (2015-12-25 11:42:52)
Difficulty: 4 of 5Under Protecting the fleet Part E. (in Calculus)
Posted on 2015-12-23 (3 Comments)
Solution Solution by Brian Smith (2015-12-24 10:27:35)
Difficulty: 3 of 5Under Quintic Power Query (in Just Math)
Posted on 2015-12-21 (2 Comments)
Some Thoughts A little research by Brian Smith (2015-12-21 11:49:11)
Difficulty: 3 of 5Under Quadratic and Five Variable Query (in Just Math)
Posted on 2015-12-20 (2 Comments)
Some Thoughts Thoughts by Brian Smith (2016-07-10 19:52:38)
Difficulty: 3 of 5Under Real Equation Resolution (in Just Math)
Posted on 2015-12-17 (1 Comments)
Solution Solution by Brian Smith (2015-12-17 23:39:15)
Difficulty: 3 of 5Under Protecting the fleet Parts C. & D. (in Geometry)
Posted on 2015-12-15 (2 Comments)
Solution Solutions by Brian Smith (2015-12-16 12:42:08)
Difficulty: 2 of 5Under Protecting the fleet Parts A. & B. (in Geometry)
Posted on 2015-12-14 (4 Comments)
Solution Solutions by Brian Smith (2015-12-16 11:35:55)
Difficulty: 3 of 5Under Complex Equation Conclusion (in Just Math)
Posted on 2015-12-12 (3 Comments)
Solution Solution by Brian Smith (2015-12-12 21:26:43)
Difficulty: 2 of 5Under List of pairs (in Just Math)
Posted on 2015-12-04 (3 Comments)
Solution Solution by Brian Smith (2020-06-20 10:30:47)
Difficulty: 3 of 5Under Simultaneous Real Satisfaction (in Just Math)
Posted on 2015-11-28 (1 Comments)
Solution Solution by Brian Smith (2016-12-18 18:04:56)
Difficulty: 2 of 5Under Sum of powers (in Numbers)
Posted on 2015-11-18 (3 Comments)
Solution A little more direct.... by Brian Smith (2016-07-13 09:57:02)
Difficulty: 3 of 5Under Irrational Decision (in Just Math)
Posted on 2015-11-15 (6 Comments)
Solution Solution by Brian Smith (2016-07-09 22:55:15)
Difficulty: 3 of 5Under Expression Ratio Limit (in Calculus)
Posted on 2015-10-22 (1 Comments)
Stumped by Brian Smith (2017-06-24 12:11:00)
Difficulty: 3 of 5Under Sum Expression Value Determination (in Just Math)
Posted on 2015-10-18 (3 Comments)
Solution The easy way? (Solution) by Brian Smith (2015-10-18 13:12:59)
Difficulty: 3 of 5Under Expression and Perfect Square (in Just Math)
Posted on 2015-10-10 (3 Comments)
Solution Solution by Brian Smith (2019-03-23 00:55:46)
Difficulty: 3 of 5Under Expression Divides Expression (in Just Math)
Posted on 2015-09-12 (1 Comments)
Solution Solution by Brian Smith (2017-06-24 11:45:22)
Difficulty: 3 of 5Under Talk to me (in Just Math)
Posted on 2015-09-10 (1 Comments)
Solution Solution by Brian Smith (2017-06-30 22:14:53)
Difficulty: 3 of 5Under Non-perfect Cube Root Sum (in Just Math)
Posted on 2015-08-14 (6 Comments)
Some searching by Brian Smith (2015-08-17 12:30:54)
Difficulty: 3 of 5Under You make me laugh (in Numbers)
Posted on 2015-07-28 (2 Comments)
Solution Analytic Solution by Brian Smith (2016-11-24 11:38:30)
Difficulty: 3 of 5Under A powerful resemblance. (in Just Math)
Posted on 2015-07-12 (2 Comments)
Stumped by Brian Smith (2017-01-01 18:27:04)
Difficulty: 2 of 5Under Map coloring (in Shapes)
Posted on 2015-06-05 (8 Comments)
Solution 6 countries solution by Brian Smith (2015-06-05 22:50:02)
Difficulty: 3 of 5Under All that glitters (in Numbers)
Posted on 2015-05-31 (1 Comments)
Solution Solution by Brian Smith (2017-06-23 21:09:41)
Difficulty: 3 of 5Under Sinusoidal System (in Just Math)
Posted on 2015-05-24 (2 Comments)
Thoughts by Brian Smith (2018-12-25 22:40:53)
Difficulty: 3 of 5Under Tile flipping (in Just Math)
Posted on 2015-04-08 (12 Comments)
Some Thoughts No Subject by Brian Smith (2016-11-15 10:49:44)
Difficulty: 3 of 5Under Quadratic Query (in Just Math)
Posted on 2015-04-08 (1 Comments)
Thoughts by Brian Smith (2016-11-16 12:51:14)
Difficulty: 2 of 5Under Missing Digit II (in Just Math)
Posted on 2015-03-10 (5 Comments)
Solution Solution by Brian Smith (2016-06-26 11:33:57)
Difficulty: 3 of 5Under Double a triangle (in Sequences)
Posted on 2015-02-19 (3 Comments)
Some Thoughts One more observation by Brian Smith (2016-07-30 11:24:32)
Difficulty: 3 of 5Under Octic Sum Settlement (in Just Math)
Posted on 2015-02-06 (3 Comments)
Solution Solution by Brian Smith (2017-06-24 09:27:16)
Difficulty: 3 of 5Under Integral Proof (in Numbers)
Posted on 2015-01-26 (3 Comments)
Solution Full Solution by Brian Smith (2016-06-26 23:33:36)
Difficulty: 3 of 5Under Final Minus Two (in Just Math)
Posted on 2015-01-24 (2 Comments)
Solution How to add -2 by Brian Smith (2016-07-01 09:38:28)
Difficulty: 3 of 5Under Match 3 Game (in General)
Posted on 2015-01-02 (2 Comments)
Solution All 100 Cleared by Brian Smith (2016-02-09 13:58:16)
Some Thoughts 95 of 100 cleared by Brian Smith (2016-02-08 11:42:41)
Difficulty: 3 of 5Under Region Area Ascertainment (in Just Math)
Posted on 2014-12-28 (4 Comments)
Solution Another Solution by Brian Smith (2016-12-05 12:01:28)
Difficulty: 3 of 5Under Marked squares (in Just Math)
Posted on 2014-12-24 (1 Comments)
Solution Solution by Brian Smith (2016-02-26 12:30:01)
Difficulty: 2 of 5Under Equation Exercise (in Just Math)
Posted on 2014-12-16 (3 Comments)
Solution Another solution by Brian Smith (2016-11-24 16:02:23)
Difficulty: 3 of 5Under Extreme Ellipse Exercise (in Shapes)
Posted on 2014-12-13 (1 Comments)
Solution Circumellipse (Part A) by Brian Smith (2016-12-04 23:42:52)
Difficulty: 3 of 5Under Cuboid Volume Validation (in Shapes)
Posted on 2014-11-30 (1 Comments)
Solution Solution by Brian Smith (2016-02-07 23:03:32)
Difficulty: 3 of 5Under Near Pandigital Ponder (in Just Math)
Posted on 2014-11-26 (1 Comments)
Solution An Algorithm by Brian Smith (2017-10-25 13:23:04)
Difficulty: 3 of 5Under Supreme Red Sox Surmise (in Probability)
Posted on 2014-11-06 (3 Comments)
Solution Solution by Brian Smith (2023-04-01 15:21:37)
Difficulty: 3 of 5Under A happy trio (in Probability)
Posted on 2014-10-09 (3 Comments)
Solution No Subject by Brian Smith (2016-06-25 21:32:22)
Difficulty: 3 of 5Under 1 to 8 in 5*5 grid (in Word Problems)
Posted on 2014-09-16 (1 Comments)
Solution Solution by Brian Smith (2016-11-14 11:01:27)
Difficulty: 3 of 5Under 4 cents (in Shapes)
Posted on 2014-09-12 (11 Comments)
re: Close, but no cigar by Brian Smith (2016-02-01 11:33:59)
Some Thoughts re: About this problem. by Brian Smith (2016-01-31 14:59:56)
Solution A possible connected maximum by Brian Smith (2016-01-31 10:34:03)
re: Question by Brian Smith (2016-01-31 09:29:51)
Some Thoughts re: Overlooked problem by Brian Smith (2016-01-30 23:16:21)
Difficulty: 3 of 5Under Sparse Sine Settlement (in Just Math)
Posted on 2014-09-03 (2 Comments)
Some Thoughts An identity to prove by Brian Smith (2017-06-24 12:44:20)
Difficulty: 3 of 5Under A PowerSum Puzzle (in Numbers)
Posted on 2014-08-27 (3 Comments)
Solution Solution by Brian Smith (2016-06-21 12:12:11)
Difficulty: 3 of 5Under Six tangents (in Just Math)
Posted on 2014-08-17 (10 Comments)
Solution Solution by Brian Smith (2016-07-04 19:45:10)
Difficulty: 3 of 5Under Line Division (in Shapes)
Posted on 2014-08-10 (1 Comments)
Solution Fold sequence by Brian Smith (2016-12-18 15:27:30)
Difficulty: 3 of 5Under Fraction Sum Satisfaction (in Just Math)
Posted on 2014-08-09 (4 Comments)
Solution Solution by Brian Smith (2020-06-27 16:25:51)
Difficulty: 3 of 5Under Identity Satisfaction (in Just Math)
Posted on 2014-08-05 (1 Comments)
Solution Some Linear Algebra by Brian Smith (2016-02-03 11:57:22)
Difficulty: 3 of 5Under Square Squares Settlement (in Shapes)
Posted on 2014-07-30 (2 Comments)
Solution Solution by Brian Smith (2016-06-17 13:34:34)
Difficulty: 3 of 5Under Covering an Ellipse (in Shapes)
Posted on 2014-07-26 (2 Comments)
Solution Parallel Rectangles by Brian Smith (2016-12-16 16:01:39)
Some Thoughts One big rectangle by Brian Smith (2016-12-13 12:51:48)
Difficulty: 4 of 5Under Tiling Trial (in Shapes)
Posted on 2014-07-24 (2 Comments)
Solution re: Solution by Brian Smith (2016-10-26 10:50:03)
Difficulty: 3 of 5Under Cinq Confusion (in Shapes)
Posted on 2014-07-10 (3 Comments)
Some Thoughts Analytic attempt by Brian Smith (2024-01-25 13:15:19)
Difficulty: 3 of 5Under Smarandache Settlement (in Just Math)
Posted on 2014-06-24 (2 Comments)
Solution Solution by Brian Smith (2018-12-15 18:32:19)
Difficulty: 3 of 5Under Taking the Fifth (in Just Math)
Posted on 2014-06-21 (5 Comments)
re(2): Solution by Brian Smith (2017-05-05 23:54:15)
Solution Solution by Brian Smith (2017-05-01 23:55:28)
Difficulty: 3 of 5Under Three Product Tease (in Just Math)
Posted on 2014-06-12 (3 Comments)
Solution Solution with proof by Brian Smith (2021-09-11 12:09:51)
Difficulty: 3 of 5Under Bricks and Box Baffle (in Shapes)
Posted on 2014-05-23 (2 Comments)
Hints/Tips Old thoughts by Brian Smith (2014-05-24 14:08:20)
Difficulty: 3 of 5Under Guessing Game (in Numbers)
Posted on 2014-05-16 (19 Comments)
re: Additional thoughts by Brian Smith (2014-05-19 07:34:34)
Difficulty: 2 of 5Under Trivia (in Numbers)
Posted on 2014-04-21 (7 Comments)
Solution Answer by Brian Smith (2014-04-21 10:31:25)
Difficulty: 3 of 5Under Intriguing Integral Illation II (in Calculus)
Posted on 2014-04-03 (2 Comments)
Some Thoughts A little more direct.... by Brian Smith (2016-07-04 23:01:03)
Difficulty: 3 of 5Under Pumpkins 4 (in Weights and Scales)
Posted on 2014-01-31 (3 Comments)
Solution Solution, with no guesswork! by Brian Smith (2015-12-24 11:48:41)
Difficulty: 4 of 5Under Coded Crossword 2 (in Cryptography)
Posted on 2014-01-24 (3 Comments)
Solution Solution by Brian Smith (2017-07-24 21:21:18)
Difficulty: 3 of 5Under Pumpkins 3 (in Weights and Scales)
Posted on 2014-01-22 (6 Comments)
re(2): Another Analytic Solution by Brian Smith (2016-01-26 11:11:29)
Solution Another Analytic Solution by Brian Smith (2016-01-26 00:21:27)
re: computer solution - a bug somewhere by Brian Smith (2016-01-26 00:05:00)
Difficulty: 3 of 5Under Rationally Integers II (in Just Math)
Posted on 2013-12-21 (3 Comments)
Solution Solution by Brian Smith (2017-06-30 21:47:57)
Difficulty: 3 of 5Under Algorithm requested (in Algorithms)
Posted on 2013-12-18 (3 Comments)
Some Thoughts Another Algorithm by Brian Smith (2016-06-21 11:18:10)
Difficulty: 3 of 5Under One out of ninety (in Weights and Scales)
Posted on 2013-12-17 (7 Comments)
Solution One out of One Hundred Twenty! by Brian Smith (2015-12-18 00:03:15)
Difficulty: 3 of 5Under Take the right one (in Weights and Scales)
Posted on 2013-10-18 (18 Comments)
Solution Finding 13 Genuine Coins by Brian Smith (2013-10-20 19:12:35)
Difficulty: 3 of 5Under No multiplication allowed (in Numbers)
Posted on 2013-10-17 (8 Comments)
Some Thoughts 3/4 of the way (In two ways) by Brian Smith (2013-10-22 11:33:05)
Difficulty: 3 of 5Under Reciprocal Equation #5 (in Just Math)
Posted on 2013-10-15 (3 Comments)
Solution Rest of a solution by Brian Smith (2016-07-04 09:45:19)
Some Thoughts Part of a solution by Brian Smith (2016-07-03 21:01:30)
Difficulty: 1 of 5Under Three Semi-Circles (in Geometry)
Posted on 2013-09-22 (1 Comments)
Some Thoughts Maybe a solution by Brian Smith (2016-12-18 14:18:37)
Difficulty: 3 of 5Under Prime candidates (in Numbers)
Posted on 2013-09-11 (2 Comments)
Solution Solution by Brian Smith (2023-11-21 11:57:19)
Difficulty: 3 of 5Under Supreme Value Validation (in Just Math)
Posted on 2013-09-08 (3 Comments)
Solution Another approach by Brian Smith (2017-01-01 18:52:39)
Difficulty: 2 of 5Under How many children? (in Just Math)
Posted on 2013-09-02 (6 Comments)
Solution Solution with minimum algebra by Brian Smith (2018-12-17 13:03:01)
Difficulty: 3 of 5Under Eight Calculations (in Logic)
Posted on 2013-08-29 (1 Comments)
Solution Solution, assuming error in text by Brian Smith (2017-06-24 09:07:13)
Difficulty: 3 of 5Under Decimal Digit Determination (in Just Math)
Posted on 2013-08-24 (5 Comments)
Solution Solution from another problem by Brian Smith (2016-06-14 10:27:19)
Difficulty: 4 of 5Under Pocket Change (in Just Math)
Posted on 2013-07-30 (5 Comments)
Solution Solution by Brian Smith (2013-07-30 14:43:39)
Difficulty: 3 of 5Under Faulty Card Shuffler (in General)
Posted on 2013-07-24 (10 Comments)
Some Thoughts Solution by Brian Smith (2013-07-24 16:28:59)
Difficulty: 3 of 5Under Dominoes and checkerboard (in General)
Posted on 2013-07-23 (3 Comments)
Solution Solution by Brian Smith (2013-07-24 14:27:38)
Difficulty: 3 of 5Under Prince Rupert's Tetrahedron (in Shapes)
Posted on 2013-07-21 (2 Comments)
Solution Solution by Brian Smith (2019-10-20 10:34:38)
Difficulty: 3 of 5Under Penny Parity (in General)
Posted on 2013-07-18 (4 Comments)
Hints/Tips An algorithm by Brian Smith (2017-07-24 20:46:19)
Difficulty: 4 of 5Under Hidden Number Guess (in General)
Posted on 2013-07-10 (4 Comments)
Solution Functional Solution by Brian Smith (2016-06-25 20:45:00)
Difficulty: 3 of 5Under Divisibility of N (in Numbers)
Posted on 2013-06-15 (4 Comments)
Some Thoughts Parts 3 and 4 by Brian Smith (2017-06-26 23:40:11)
Difficulty: 3 of 5Under Two ladders (in Geometry)
Posted on 2013-03-12 (1 Comments)
Some Thoughts Thoughts by Brian Smith (2017-01-01 00:32:22)
Difficulty: 3 of 5Under Reasonable Root ? (in Just Math)
Posted on 2013-02-17 (2 Comments)
Solution Solution by Brian Smith (2016-07-14 13:45:22)
Difficulty: 3 of 5Under Five Fives Fancy Formula (in Just Math)
Posted on 2012-12-17 (4 Comments)
re(2): another form of the answer - nope by Brian Smith (2012-12-22 15:00:02)
Difficulty: 3 of 5Under Getting closer (in Just Math)
Posted on 2012-11-25 (6 Comments)
Some Thoughts In the OEIS by Brian Smith (2012-11-26 13:12:03)
Difficulty: 2 of 5Under White vs red (in Probability)
Posted on 2012-10-17 (2 Comments)
Solution Analytic Solution for m=2 by Brian Smith (2022-10-13 12:38:11)
Difficulty: 4 of 5Under P/Q (in Just Math)
Posted on 2012-10-12 (5 Comments)
Solution re: analytical proof .... a hint .... the proof by Brian Smith (2016-11-25 22:44:30)
Difficulty: 3 of 5Under Complex Conclusion (in Just Math)
Posted on 2012-08-29 (7 Comments)
Solution re: Playing around on the complex plane. - Proof and Solution by Brian Smith (2022-12-12 13:15:17)
Difficulty: 3 of 5Under Fifth power factor (in Just Math)
Posted on 2012-08-22 (4 Comments)
Hints/Tips Potential solution by Brian Smith (2019-11-29 10:59:35)
Difficulty: 3 of 5Under Irrational to Rational (in Just Math)
Posted on 2012-06-09 (2 Comments)
Some Thoughts Algebraic Thoughts by Brian Smith (2016-07-04 22:06:23)
Difficulty: 3 of 5Under Nine Androids Crossing a Bridge (in Logic)
Posted on 2012-05-14 (1 Comments)
Solution No Composite Sums Solution by Brian Smith (2016-07-22 22:04:12)
Difficulty: 3 of 5Under Sorting Coins II (in Weights and Scales)
Posted on 2012-03-28 (4 Comments)
Solution Full Solution by Brian Smith (2016-06-05 00:11:37)
Difficulty: 4 of 5Under I can see the origin from here. (in Calculus)
Posted on 2012-03-11 (2 Comments)
Some Thoughts Parts 1-3 by Brian Smith (2012-03-13 20:18:30)
Difficulty: 4 of 5Under Which is Which II (in Weights and Scales)
Posted on 2012-02-15 (4 Comments)
Some Thoughts Thoughts by Brian Smith (2016-07-09 23:13:47)
Difficulty: 3 of 5Under Simultaneous Settlement (in Just Math)
Posted on 2012-01-27 (8 Comments)
Solution Another solution by Brian Smith (2012-01-28 14:21:27)
Difficulty: 2 of 5Under Polygons in a Cube (in Just Math)
Posted on 2011-12-11 (1 Comments)
Solution Solution by Brian Smith (2016-07-17 10:43:30)
Difficulty: 3 of 5Under Power Division II (in Just Math)
Posted on 2011-11-05 (2 Comments)
Solution Analytic Solution by Brian Smith (2017-02-28 09:18:00)
Difficulty: 3 of 5Under Lucky seven V (in Just Math)
Posted on 2011-09-13 (3 Comments)
Solution Solution by Brian Smith (2016-12-23 15:53:10)
Difficulty: 2 of 5Under Five out of one (in Geometry)
Posted on 2011-09-06 (3 Comments)
Some Thoughts An Obtuse Answer by Brian Smith (2011-09-06 14:30:24)
Difficulty: 3 of 5Under Sequence Addition (in Sequences)
Posted on 2011-08-03 (2 Comments)
Solution Solution by Brian Smith (2018-12-16 19:56:14)
Difficulty: 4 of 5Under Compare (in Just Math)
Posted on 2011-07-26 (4 Comments)
Solution Solution by Brian Smith (2022-12-22 22:55:18)
Difficulty: 3 of 5Under Sum powers do not take five (in Just Math)
Posted on 2011-06-30 (3 Comments)
Solution Another Solution by Brian Smith (2017-10-25 13:06:48)
Difficulty: 3 of 5Under Sum number equals integer (in Numbers)
Posted on 2011-06-11 (5 Comments)
Solution re: Parametric solutions - Improved by Brian Smith (2016-12-21 12:18:56)
Solution Parametric solutions by Brian Smith (2016-12-19 13:59:26)
Some Thoughts First solution by Brian Smith (2016-12-19 12:01:47)
Difficulty: 3 of 5Under Duplicate Digit Determination IV (in Just Math)
Posted on 2011-06-05 (1 Comments)
Solution Solution by Brian Smith (2017-07-02 14:14:56)
Difficulty: 3 of 5Under Near Pandigital Divisibility (in Probability)
Posted on 2011-06-03 (2 Comments)
Some Thoughts Thoughts by Brian Smith (2017-07-02 13:19:51)
Difficulty: 1 of 5Under Not a fraction (in Just Math)
Posted on 2011-04-11 (3 Comments)
Solution Thinking quickly by Brian Smith (2016-06-29 13:42:30)
Difficulty: 3 of 5Under Rational Rigor (in Just Math)
Posted on 2011-03-22 (4 Comments)
Solution Solution by Brian Smith (2016-07-17 12:17:34)
Difficulty: 3 of 5Under Integer points on circles. (in Geometry)
Posted on 2011-02-28 (15 Comments)
Hints/Tips OEIS sequence by Brian Smith (2011-03-01 11:26:35)
Some Thoughts N=5 by Brian Smith (2011-02-28 21:32:14)
Difficulty: 3 of 5Under Sevenths Sliced Square (in Geometry)
Posted on 2011-02-24 (7 Comments)
re: n = 4 (spoiler) by Brian Smith (2011-02-25 20:24:47)
Difficulty: 3 of 5Under Sum Functions Determination (in Just Math)
Posted on 2011-02-19 (2 Comments)
Hints/Tips re: An approach (spoiler) by Brian Smith (2021-10-31 19:14:45)
Difficulty: 4 of 5Under Upgrade to 13 (in Weights and Scales)
Posted on 2011-02-16 (4 Comments)
Solution Three Solutions for Three Arm Ratios by Brian Smith (2016-07-04 20:43:35)
Difficulty: 3 of 5Under Rook vs Bishop (in Games)
Posted on 2011-01-25 (4 Comments)
Solution Rook Case Solution by Brian Smith (2011-01-26 23:00:45)
Difficulty: 3 of 5Under Numerator Divisibility Nuance (in Just Math)
Posted on 2011-01-22 (4 Comments)
Solution Solution by Brian Smith (2011-01-23 14:55:04)
Difficulty: 4 of 5Under Two ellipses (in Geometry)
Posted on 2011-01-19 (3 Comments)
Mental Sketches by Brian Smith (2016-12-18 14:06:43)
Difficulty: 3 of 5Under Near Goldbach Alphametics II (in Numbers)
Posted on 2011-01-07 (1 Comments)
Solution Number+1 Answer by Brian Smith (2017-04-22 19:52:18)
Difficulty: 3 of 5Under Lucky seven III (in Just Math)
Posted on 2011-01-05 (6 Comments)
Solution Analytic Answer by Brian Smith (2016-07-04 11:56:23)
Difficulty: 3 of 5Under Around the ring (in Shapes)
Posted on 2010-12-20 (9 Comments)
Some Thoughts Part 1 by Brian Smith (2016-02-29 12:58:41)
Difficulty: 3 of 5Under Seven Divisibility Settlement (in Just Math)
Posted on 2010-11-13 (3 Comments)
re: Possible Solution by Brian Smith (2017-06-24 13:44:34)
Difficulty: 3 of 5Under Look for the pairs (in Just Math)
Posted on 2010-10-15 (3 Comments)
See also... by Brian Smith (2010-10-16 00:23:21)
Difficulty: 3 of 5Under Sum and Square Root Sum (in Just Math)
Posted on 2010-09-25 (3 Comments)
Solution No Subject by Brian Smith (2016-02-18 12:26:11)
Difficulty: 3 of 5Under Solid triangles (3) (in Shapes)
Posted on 2010-08-18 (4 Comments)
Some Thoughts re: Parametric Thoughts by Brian Smith (2016-02-21 13:38:41)
Some Thoughts Parametric Thoughts by Brian Smith (2016-02-19 11:09:50)
Difficulty: 4 of 5Under Powerful and consecutive (in Numbers)
Posted on 2010-08-09 (16 Comments)
Question Question by Brian Smith (2010-08-09 12:05:30)
Difficulty: 2 of 5Under Too many fours and sixes (in Numbers)
Posted on 2010-08-07 (4 Comments)
Solution Solution by Brian Smith (2010-08-07 23:13:19)
Difficulty: 4 of 5Under POWER CHAIN. (in Sequences)
Posted on 2010-07-22 (7 Comments)
Some Thoughts Eight is impossible by Brian Smith (2010-07-22 16:37:35)
Difficulty: 3 of 5Under Inscribe Right Triangle (in Geometry)
Posted on 2010-07-18 (1 Comments)
Some Thoughts Thoughts by Brian Smith (2010-07-20 15:39:58)
Difficulty: 3 of 5Under Oddly divisible (in Just Math)
Posted on 2010-07-17 (5 Comments)
Solution re: Proof for n even....for n odd, figure out - Got it! by Brian Smith (2016-06-27 11:55:49)
Difficulty: 3 of 5Under Points On A Circle II (in Geometry)
Posted on 2010-07-13 (12 Comments)
Golomb Rulers by Brian Smith (2010-07-14 12:14:55)
Difficulty: 3 of 5Under Vertex on a Line (in Geometry)
Posted on 2010-07-11 (4 Comments)
Solution Solution by Brian Smith (2010-07-13 12:45:12)
Difficulty: 3 of 5Under x^3 = y^2 – 15 (in Numbers)
Posted on 2010-07-08 (11 Comments)
Some Thoughts Catalan Conjecture by Brian Smith (2010-07-10 12:24:32)
Difficulty: 3 of 5Under Inscribed circle and Line Choice (in Just Math)
Posted on 2010-06-27 (3 Comments)
Solution No Subject by Brian Smith (2016-02-02 11:17:12)
Difficulty: 4 of 5Under Lucky seven II (in Just Math)
Posted on 2010-06-23 (2 Comments)
Solution Solution by Brian Smith (2016-12-23 00:20:40)
Difficulty: 5 of 5Under Cover the Center (in Geometry)
Posted on 2010-06-04 (6 Comments)
Some Thoughts Five and Six Planks by Brian Smith (2010-06-05 17:38:43)
Some Thoughts Four Plank Analysis by Brian Smith (2010-06-04 19:13:06)
Some Thoughts One, Two and Three Planks by Brian Smith (2010-06-04 17:34:56)
Difficulty: 3 of 5Under Cubic and Consecutive Concern II (in Probability)
Posted on 2010-05-31 (10 Comments)
re: Infinite family of solutions - Solution not in the family by Brian Smith (2010-06-04 19:58:53)
Some Thoughts Infinite family of solutions by Brian Smith (2010-06-01 20:21:58)
Solution Program Solution by Brian Smith (2010-06-01 01:38:21)
Difficulty: 4 of 5Under Cover the Circumference (in Geometry)
Posted on 2010-05-25 (4 Comments)
Some Thoughts Another approach by Brian Smith (2010-05-27 00:27:57)
Difficulty: 2 of 5Under Cross the Circle (in Geometry)
Posted on 2010-05-23 (3 Comments)
Solution Solution by Brian Smith (2010-05-23 18:53:28)
Difficulty: 2 of 5Under Hidden Fruit (in Numbers)
Posted on 2010-05-21 (3 Comments)
re(2): Solution .......What a bright idea- by Brian Smith (2010-05-21 14:56:28)
Solution Solution by Brian Smith (2010-05-21 12:28:48)
Difficulty: 2 of 5Under Many triplets (in Just Math)
Posted on 2010-05-10 (6 Comments)
Solution Parametric Solution by Brian Smith (2010-05-10 13:34:42)
Difficulty: 3 of 5Under My favorite numbers IV (in Just Math)
Posted on 2010-05-08 (3 Comments)
Some Thoughts Three distinct answers by Brian Smith (2010-05-09 11:09:36)
Difficulty: 3 of 5Under (7N-1 – 1)/N = Perfect Square (in Just Math)
Posted on 2010-04-24 (2 Comments)
Erroneous solution by Brian Smith (2023-07-19 12:09:32)
Difficulty: 4 of 5Under Perfect Square To Divisibility By 56 (in Just Math)
Posted on 2010-04-01 (15 Comments)
Hints/Tips Modular arithmetic by Brian Smith (2010-04-02 23:05:04)
Some Thoughts Now, four values by Brian Smith (2010-04-01 20:55:46)
Difficulty: 2 of 5Under Minimal area. (in Geometry)
Posted on 2010-03-29 (11 Comments)
Solution A longer solution by Brian Smith (2010-03-30 20:34:53)
Difficulty: 3 of 5Under 4x11 Grid Fill (in Shapes)
Posted on 2010-03-21 (8 Comments)
Solution re: Divisibility - Proof by Brian Smith (2023-08-16 01:01:56)
Some Thoughts Divisibility by Brian Smith (2010-03-22 23:25:00)
Difficulty: 4 of 5Under Little cubes (in Numbers)
Posted on 2010-02-27 (5 Comments)
Some Thoughts re(2): computer exploration by Brian Smith (2010-02-27 18:51:49)
Difficulty: 4 of 5Under The three sides and the height (in Numbers)
Posted on 2010-02-15 (5 Comments)
Hints/Tips Analytic Answer by Brian Smith (2010-02-15 15:42:36)
Difficulty: 3 of 5Under Enough is enough (in Games)
Posted on 2010-01-29 (5 Comments)
Solution Smallest known number of clues by Brian Smith (2010-01-29 16:31:27)
Difficulty: 4 of 5Under four or more (in Numbers)
Posted on 2010-01-25 (2 Comments)
Solution Solution by Brian Smith (2010-01-25 14:53:21)
Difficulty: 4 of 5Under Quaint Quartic-Quadratic Sum (in Just Math)
Posted on 2010-01-09 (3 Comments)
Solution Solution by Brian Smith (2010-01-09 17:54:44)
Difficulty: 4 of 5Under Absolute Adjacent Cell Difference (in Just Math)
Posted on 2010-01-02 (1 Comments)
Some Thoughts Almost a solution by Brian Smith (2016-07-17 15:11:07)
Difficulty: 3 of 5Under Precariously Balanced (in Weights and Scales)
Posted on 2009-12-22 (10 Comments)
Solution Rather Simple Solution by Brian Smith (2009-12-23 22:59:57)
Difficulty: 3 of 5Under No Addition Allowed (in Numbers)
Posted on 2009-12-14 (6 Comments)
re: triangular numbers by Brian Smith (2009-12-15 14:38:10)
Difficulty: 3 of 5Under Going Arithmetic With Alphametic II (in Just Math)
Posted on 2009-11-21 (3 Comments)
Solution Analytic solution by Brian Smith (2009-11-21 20:32:17)
Difficulty: 3 of 5Under Consecutive 8-Digit Heron (in Geometry)
Posted on 2009-11-15 (4 Comments)
re: One possible value by Brian Smith (2009-11-16 13:04:47)
Difficulty: 2 of 5Under ten*ten – ten = ninety (in Numbers)
Posted on 2009-10-25 (5 Comments)
Solution Next larger solution by Brian Smith (2009-10-30 22:59:24)
Difficulty: 2 of 5Under Three Prime Product (in Numbers)
Posted on 2009-10-18 (5 Comments)
Solution Solution by Brian Smith (2009-10-18 14:44:38)
Difficulty: 3 of 5Under x + y * 3√2 + z * 3√4 = 0 (in Just Math)
Posted on 2009-10-15 (14 Comments)
Solution Solution - trying formatting by Brian Smith (2009-10-16 12:04:25)
Difficulty: 3 of 5Under No Monochrome Sums (in Numbers)
Posted on 2009-10-14 (10 Comments)
C program by Brian Smith (2009-10-15 15:30:45)
Some Thoughts Sloane says by Brian Smith (2009-10-14 20:59:44)
Difficulty: 4 of 5Under 9 points to convex pentagon (in Shapes)
Posted on 2009-10-12 (4 Comments)
Hints/Tips Happy Ending by Brian Smith (2009-10-18 00:54:51)
Difficulty: 2 of 5Under Double Coverage (in Shapes)
Posted on 2009-09-29 (4 Comments)
re: considering second pentomino by Brian Smith (2009-09-30 00:45:40)
Difficulty: 3 of 5Under ABCD's Of Greatest Divisor (in Numbers)
Posted on 2009-09-24 (3 Comments)
Solution Solution by Brian Smith (2009-09-24 12:43:50)
Difficulty: 3 of 5Under Primes and Squares (in Just Math)
Posted on 2009-08-16 (3 Comments)
Thoughts by Brian Smith (2016-02-06 13:46:57)
Difficulty: 3 of 5Under Equal Chance (in Probability)
Posted on 2009-08-03 (2 Comments)
Solution Solution by Brian Smith (2017-07-26 21:11:01)
Difficulty: 3 of 5Under 3x3 Nim (in Games)
Posted on 2009-06-25 (26 Comments)
Hints/Tips nim value equivalents by Brian Smith (2009-06-29 01:15:18)
Difficulty: 3 of 5Under Powering Up The Matrix (in Just Math)
Posted on 2009-06-20 (3 Comments)
Solution Solution by Brian Smith (2009-06-21 01:28:32)
Difficulty: 3 of 5Under Triangles and Squares (in Geometry)
Posted on 2009-06-17 (4 Comments)
Solution Solution by Brian Smith (2009-06-19 11:41:03)
Some Thoughts Trapezoids? by Brian Smith (2009-06-17 19:07:06)
Difficulty: 3 of 5Under 5 Cards Magic Trick Redux (in Logic)
Posted on 2009-06-05 (4 Comments)
Solution Functional Solution by Brian Smith (2016-06-25 20:21:18)
Difficulty: 3 of 5Under Curious Cubic Constant (in Numbers)
Posted on 2009-05-02 (3 Comments)
Solution Smallest c for 1,2,3,4,5,6 distinct solutions by Brian Smith (2016-07-03 19:51:22)
Difficulty: 2 of 5Under five, four and tri (in Numbers)
Posted on 2009-04-18 (4 Comments)
Alphametric computer soltuion by Brian Smith (2009-04-18 16:50:57)
Difficulty: 3 of 5Under Derivative chains. (in Calculus)
Posted on 2009-03-29 (7 Comments)
Some Thoughts 4 of 5 solved by Brian Smith (2016-06-25 22:19:38)
Difficulty: 2 of 5Under Now, the Old Hat (in Numbers)
Posted on 2009-02-20 (5 Comments)
Solution Analytic Solution by Brian Smith (2009-02-21 18:49:40)
Difficulty: 4 of 5Under Cylindrical Cuts (in Shapes)
Posted on 2009-01-22 (5 Comments)
Solution Exact Surface Area by Brian Smith (2009-02-12 13:10:23)
Solution Exact Solution by Brian Smith (2009-01-23 16:13:00)
Difficulty: 3 of 5Under Power x mod x (in Just Math)
Posted on 2008-12-18 (6 Comments)
2^n mod n website by Brian Smith (2008-12-19 15:58:17)
Difficulty: 3 of 5Under Defective Bulbs (in Just Math)
Posted on 2008-12-12 (6 Comments)
Q2 Answer by Brian Smith (2008-12-15 16:20:16)
Difficulty: 2 of 5Under Constructing a right triangle (in Geometry)
Posted on 2008-12-07 (6 Comments)
Solution Generalized soltution by Brian Smith (2008-12-08 02:49:52)
Difficulty: 3 of 5Under Getting The Minimum With SOD (in Just Math)
Posted on 2008-12-02 (2 Comments)
Solution Solution by Brian Smith (2008-12-02 15:31:43)
Difficulty: 3 of 5Under Triangle Area (in Geometry)
Posted on 2008-11-28 (12 Comments)
re: computer aided solution by Brian Smith (2008-11-30 03:23:35)
Difficulty: 2 of 5Under one/five = .two (in Numbers)
Posted on 2008-11-24 (3 Comments)
re: a start for an analytical solution by Brian Smith (2008-11-30 03:33:18)
Difficulty: 2 of 5Under Building a ruler (in General)
Posted on 2008-11-14 (11 Comments)
Golomb Rulers by Brian Smith (2008-11-16 00:32:35)
Difficulty: 2 of 5Under Always equilateral (in Geometry)
Posted on 2008-10-14 (5 Comments)
Solution re(2): Napoleon's Theorem - trig proof by Brian Smith (2008-10-21 03:07:30)
Napoleon's Theorem by Brian Smith (2008-10-18 23:07:46)
Difficulty: 2 of 5Under Square 2 Score (in Just Math)
Posted on 2008-05-13 (5 Comments)
re: Two values, no proof - Sloane sequence by Brian Smith (2008-05-14 12:26:42)
Difficulty: 2 of 5Under Do you have a card? (in Riddles)
Posted on 2008-05-12 (12 Comments)
Solution I have one of these (spoiler) by Brian Smith (2008-05-12 21:06:05)
Difficulty: 4 of 5Under Sum of Powers (in Numbers)
Posted on 2008-04-21 (5 Comments)
Hints/Tips Solving tips by Brian Smith (2008-04-24 00:42:31)
Difficulty: 4 of 5Under Curious Consecutive Conundrum (in Just Math)
Posted on 2008-04-08 (7 Comments)
re: What value for L? by Brian Smith (2008-04-10 00:15:01)
Difficulty: 3 of 5Under Broken Lights Out (in Logic)
Posted on 2008-04-07 (4 Comments)
Hint by Brian Smith (2008-04-09 21:37:12)
Difficulty: 4 of 5Under Knave Contest (in Liars and Knights)
Posted on 2008-04-03 (8 Comments)
re: Solution & Explanation by Brian Smith (2008-04-07 22:47:56)
Difficulty: 3 of 5Under Who's Younger? (in Liars and Knights)
Posted on 2008-04-01 (10 Comments)
Solution Solution by Brian Smith (2008-04-02 22:27:45)
Difficulty: 3 of 5Under Intersection And Maximum Triangle (in Geometry)
Posted on 2008-03-30 (5 Comments)
Some Thoughts Thoughts by Brian Smith (2019-11-24 11:16:42)
Difficulty: 3 of 5Under Triangulation of Numbers (in Geometry)
Posted on 2008-03-18 (7 Comments)
Solution No Subject by Brian Smith (2008-03-20 00:56:39)
Difficulty: 3 of 5Under Unreliable scale (in Weights and Scales)
Posted on 2008-02-28 (3 Comments)
Solution Solution by Brian Smith (2008-03-01 01:50:21)
Difficulty: 3 of 5Under Circle And Intersection (in Geometry)
Posted on 2008-01-25 (6 Comments)
Solution Attempt by Brian Smith (2008-01-26 18:11:24)
Difficulty: 2 of 5Under Limit of the sequence? (in Just Math)
Posted on 2008-01-06 (10 Comments)
re: Solution by Brian Smith (2008-01-07 00:22:19)
Solution by Brian Smith (2008-01-07 00:19:47)
Difficulty: 3 of 5Under Ellipse And Minimum Parallelogram (in Geometry)
Posted on 2008-01-04 (4 Comments)
Some Thoughts re: Solution - Solution Set by Brian Smith (2008-01-07 22:59:27)
Solution Solution by Brian Smith (2008-01-05 23:11:54)
Gut reaction by Brian Smith (2008-01-04 12:44:58)
Difficulty: 3 of 5Under Laser Reconstruction: 6 targets, 5 mirrors (in General)
Posted on 2007-12-14 (6 Comments)
Solution 4 mirrors, 4x4 grid and 5 mirrors 4x3 grid by Brian Smith (2007-12-19 13:09:09)
re(2): 4 mirrors, 5x5 grid - profession?? by Brian Smith (2007-12-17 01:32:22)
4 mirrors, 5x5 grid by Brian Smith (2007-12-16 01:58:16)
Difficulty: 3 of 5Under Cyclic Hexagon And Ratio (in Geometry)
Posted on 2007-12-08 (6 Comments)
More Thoughts by Brian Smith (2007-12-10 01:25:58)
Difficulty: 1 of 5Under Word Oddity (5) No repeat workday (in Word Problems)
Posted on 2007-12-03 (6 Comments)
Solution by Brian Smith (2007-12-03 13:14:40)
Difficulty: 3 of 5Under Trapezing The Parabola (in Geometry)
Posted on 2007-12-01 (3 Comments)
Analytic Solution by Brian Smith (2007-12-03 13:04:30)
Difficulty: 3 of 5Under Any triangle, Trigonometric function - second episode! (in Just Math)
Posted on 2007-11-18 (12 Comments)
re: Solution by Brian Smith (2007-11-20 12:03:23)
Difficulty: 2 of 5Under Sum Reciprocal Lengths (in Geometry)
Posted on 2007-11-17 (6 Comments)
Solution by Brian Smith (2007-11-17 20:58:44)
Difficulty: 2 of 5Under Getting To PC With A Circle (in Geometry)
Posted on 2007-11-10 (9 Comments)
Solution by Brian Smith (2007-11-11 01:21:17)
Difficulty: 3 of 5Under Quadrilateral With A Difference (in Geometry)
Posted on 2007-11-08 (3 Comments)
Solution Solution by Brian Smith (2007-11-08 15:11:28)
Difficulty: 1 of 5Under Donuts (in Liars and Knights)
Posted on 2007-11-05 (6 Comments)
Solution by Brian Smith (2007-11-05 11:46:38)
Difficulty: 3 of 5Under Incenter and a Circumcircle (in Geometry)
Posted on 2007-10-28 (6 Comments)
Solution Solution by Brian Smith (2007-11-10 01:38:32)
Difficulty: 2 of 5Under Linear and quadratic (in Calculus)
Posted on 2007-10-23 (9 Comments)
re: By limits by Brian Smith (2007-10-24 01:59:49)
Solution Easy Trick Solution by Brian Smith (2007-10-23 10:46:57)
Difficulty: 2 of 5Under Laser Puzzle (in General)
Posted on 2007-10-22 (9 Comments)
re(3): Solution as address to Dej Mar (Thanks) by Brian Smith (2007-10-24 01:52:01)
re: Solution by Brian Smith (2007-10-23 10:35:19)
Difficulty: 3 of 5Under Rational Quadrilateral? (in Geometry)
Posted on 2007-10-18 (2 Comments)
Trapezoid by Brian Smith (2007-10-19 10:47:46)
Rectangle or Parallelogram by Brian Smith (2007-10-18 11:16:05)
Difficulty: 3 of 5Under Special Natural Numbers (in Numbers)
Posted on 2007-10-14 (8 Comments)
Some more thoughts by Brian Smith (2007-10-18 11:10:42)
re: Some were discovered.... by Brian Smith (2007-10-15 11:38:07)
Difficulty: 3 of 5Under Consider The Factors, Get Perfect Square? (in Just Math)
Posted on 2007-09-23 (4 Comments)
Solution No Subject by Brian Smith (2007-09-23 23:49:37)
Difficulty: 2 of 5Under Out of gas. (in Tricks)
Posted on 2007-09-22 (29 Comments)
re(2): I'm reaching here by Brian Smith (2007-09-25 11:11:27)
Difficulty: 3 of 5Under Collinear Intersections (in Geometry)
Posted on 2007-09-13 (1 Comments)
Monge's Circle Theorem by Brian Smith (2009-11-07 12:11:10)
Difficulty: 2 of 5Under Sum The Secants, Get 6 (in Geometry)
Posted on 2007-09-12 (2 Comments)
Solution Some Secants Sum Six by Brian Smith (2007-09-16 17:11:57)
Difficulty: 2 of 5Under Getting The Bases With 2007? (in Numbers)
Posted on 2007-09-09 (4 Comments)
re: another solution by Brian Smith (2007-10-19 10:59:09)
Difficulty: 3 of 5Under Getting Perfect Squares With 4 And 9? (in Just Math)
Posted on 2007-09-03 (3 Comments)
Solution If p is even by Brian Smith (2007-09-03 14:24:15)
Difficulty: 3 of 5Under Getting Squared With 1 And 16 (in Just Math)
Posted on 2007-09-01 (5 Comments)
Solution Solution by Brian Smith (2007-09-05 10:22:23)
Difficulty: 4 of 5Under Only One Operator (in Numbers)
Posted on 2007-08-26 (7 Comments)
Hints/Tips Part 1 Solution by Brian Smith (2007-08-28 10:43:08)
Difficulty: 3 of 5Under Grid of Little Squares (in Numbers)
Posted on 2007-08-07 (2 Comments)
Solution Solution by Brian Smith (2007-08-07 14:26:26)
Difficulty: 3 of 5Under Spies Like Us (in General)
Posted on 2007-07-30 (3 Comments)
Some Thoughts Defining Distance by Brian Smith (2007-08-03 20:55:54)
Difficulty: 3 of 5Under Quadruple Agent (in Probability)
Posted on 2007-07-25 (12 Comments)
Hints/Tips More thoughts by Brian Smith (2008-07-22 01:08:33)
My thoughts by Brian Smith (2008-07-18 20:52:12)
Difficulty: 3 of 5Under Subtract The Cubics, Get Product (in Just Math)
Posted on 2007-07-22 (6 Comments)
Another solution by Brian Smith (2023-04-15 17:19:31)
Solution by Brian Smith (2007-07-23 10:35:35)
Difficulty: 3 of 5Under Take Third Degree, Solve For Real (in Just Math)
Posted on 2007-06-27 (4 Comments)
Factoring Idea by Brian Smith (2007-06-27 23:39:53)
Difficulty: 4 of 5Under A Perplexing (Prime) Puzzle (in Just Math)
Posted on 2007-06-05 (5 Comments)
More number crunching by Brian Smith (2007-06-07 22:08:55)
Some number crunching by Brian Smith (2007-06-07 00:34:43)
Difficulty: 3 of 5Under Only one, one, one (in Calculus)
Posted on 2007-05-30 (5 Comments)
re: solution by Brian Smith (2007-05-31 15:11:55)
Solution by Brian Smith (2007-05-31 14:53:35)
Difficulty: 3 of 5Under Divide The Cubic, Get The Pairs (in Numbers)
Posted on 2007-05-26 (5 Comments)
re(2): Solution (a few questions) by Brian Smith (2007-05-28 23:59:42)
re(2): Solution (spoiler) by Brian Smith (2007-05-27 14:32:40)
Solution Solution by Brian Smith (2007-05-27 00:56:17)
Difficulty: 4 of 5Under Well Balanced Letter: F (in Shapes)
Posted on 2007-05-16 (8 Comments)
Some Thoughts Well Balanced F Extension by Brian Smith (2009-02-10 13:23:14)
re(2): maybe -- numerical confirmation and question -- equation solving by Brian Smith (2007-05-18 20:08:58)
Solution by Brian Smith (2007-05-17 15:36:23)
Difficulty: 3 of 5Under Square An Integer, Get Quartic (in Just Math)
Posted on 2007-05-13 (4 Comments)
Solution Squeeze Play (Solution) by Brian Smith (2007-05-14 23:02:03)
Difficulty: 3 of 5Under Add Square Roots, Get Real(m) (in Just Math)
Posted on 2007-05-06 (3 Comments)
Solution The unique solution by Brian Smith (2007-05-06 23:06:05)
Difficulty: 2 of 5Under Matrix Identity (in Just Math)
Posted on 2007-04-26 (8 Comments)
re: An Attempt To Generalisation by Brian Smith (2007-04-30 23:10:29)
Difficulty: 3 of 5Under A Near Diophantine Octagon Problem (in Geometry)
Posted on 2007-04-22 (10 Comments)
Question re(6): Solution by Brian Smith (2007-04-26 00:16:43)
re(4): Solution by Brian Smith (2007-04-25 12:12:54)
re(2): Solution by Brian Smith (2007-04-24 01:00:13)
Solution Solution by Brian Smith (2007-04-23 11:55:30)
Difficulty: 5 of 5Under Raise to the seventh power, get factor (in Numbers)
Posted on 2007-04-18 (5 Comments)
Solution Solution by Brian Smith (2007-04-21 16:09:38)
Difficulty: 4 of 5Under A Point in a Triangle (in Geometry)
Posted on 2007-04-12 (8 Comments)
re(2): on another look by Brian Smith (2007-04-13 12:24:27)
Difficulty: 2 of 5Under Proof positive: squares of integers (in Just Math)
Posted on 2007-04-07 (3 Comments)
Hints/Tips Third of three proved by Brian Smith (2007-04-09 14:32:52)
Hints/Tips Two of three proved by Brian Smith (2007-04-09 11:34:14)
Difficulty: 2 of 5Under Get The Quadruplets (in Just Math)
Posted on 2007-04-06 (3 Comments)
Solution All Answers Analytically by Brian Smith (2007-04-09 14:28:21)
Difficulty: 3 of 5Under More Harmonic Integers (2) (in Numbers)
Posted on 2007-03-28 (6 Comments)
Solution I think I got it by Brian Smith (2007-03-30 13:10:34)
Difficulty: 3 of 5Under Surprising Sudden Square (in Numbers)
Posted on 2007-03-24 (10 Comments)
Solution chains by Brian Smith (2007-03-25 12:02:56)
re: A start by Brian Smith (2007-03-25 00:01:34)
Difficulty: 3 of 5Under Appropriate Area (in Numbers)
Posted on 2007-03-21 (5 Comments)
re: Solution by Brian Smith (2007-03-22 14:01:04)
Difficulty: 3 of 5Under Polynomial Puzzle (in Just Math)
Posted on 2007-03-16 (7 Comments)
Solution Solution (and that fourth point) by Brian Smith (2007-03-17 21:52:42)
Difficulty: 2 of 5Under Integer coefficients (in Just Math)
Posted on 2007-03-13 (3 Comments)
No Linear Factors by Brian Smith (2007-03-14 21:09:54)
Difficulty: 2 of 5Under More Harmonic Integers (in Just Math)
Posted on 2007-03-12 (3 Comments)
Solution (and a half) by Brian Smith (2007-03-14 20:55:50)
Difficulty: 2 of 5Under 2+2 (in Tricks)
Posted on 2007-03-04 (17 Comments)
Spell it out by Brian Smith (2007-03-04 22:57:40)
Difficulty: 5 of 5Under Cutting Corners (in Geometry)
Posted on 2007-02-27 (22 Comments)
I got the solution right this time!! by Brian Smith (2007-03-03 20:28:15)
I was wrong by Brian Smith (2007-03-03 11:40:29)
Hints/Tips re(2): Corner Cutting Function by Brian Smith (2007-03-02 11:52:49)
Corner Cutting Function by Brian Smith (2007-03-01 13:03:23)
Difficulty: 2 of 5Under A 1001 Problem (in Numbers)
Posted on 2007-02-05 (23 Comments)
re(2): How can you get fame on instagram in australia? by Brian Smith (2021-12-27 12:22:05)
Difficulty: 5 of 5Under Binary Repunit Fibonaccis (in Numbers)
Posted on 2007-01-22 (6 Comments)
Research Results by Brian Smith (2016-07-02 20:10:42)
Difficulty: 3 of 5Under Astute Root Evaluation (in Just Math)
Posted on 2007-01-07 (2 Comments)
Some Thoughts re: For the simple case by Brian Smith (2016-12-18 15:16:16)
Difficulty: 5 of 5Under The art of fencing (in Shapes)
Posted on 2006-12-27 (6 Comments)
Some Thoughts Rectangular Answers by Brian Smith (2016-10-30 18:38:51)
Difficulty: 2 of 5Under Custom Dice (in Probability)
Posted on 2006-11-16 (6 Comments)
Solution re: Extension to question 2 by Brian Smith (2017-02-27 12:56:16)
Difficulty: 5 of 5Under Radioactive Coins (in Weights and Scales)
Posted on 2006-10-17 (20 Comments)
re(3): Fibonacci Connection.....placed by Brian Smith (2016-02-15 23:10:12)
Some Thoughts re: Fibonacci Connection by Brian Smith (2016-02-14 12:00:22)
Solution Fibonacci Connection by Brian Smith (2016-02-10 12:11:57)
Difficulty: 4 of 5Under Paint Job Pro (in Shapes)
Posted on 2006-09-19 (2 Comments)
Solution Necessary Colors by Brian Smith (2008-01-01 01:39:47)
Difficulty: 3 of 5Under Fermat for beginners (in Numbers)
Posted on 2006-09-14 (4 Comments)
Solution Solution, without invoking Fermat by Brian Smith (2016-06-26 10:34:55)
Difficulty: 2 of 5Under Mountains and Valleys (in Shapes)
Posted on 2006-07-19 (9 Comments)
Solution Got it! by Brian Smith (2016-03-05 11:23:03)
Hints/Tips No Subject by Brian Smith (2016-03-05 10:47:02)
Difficulty: 3 of 5Under Which is Which (in Weights and Scales)
Posted on 2006-07-07 (15 Comments)
Solution Another Solution by Brian Smith (2016-06-28 11:58:20)
Difficulty: 3 of 5Under Three Intercepts (in Just Math)
Posted on 2006-06-19 (7 Comments)
Solution Polynomial Solutions by Brian Smith (2016-07-09 14:54:42)
Difficulty: 2 of 5Under ABCDEABCDE is one (in General)
Posted on 2006-05-17 (4 Comments)
Found this in the OEIS by Brian Smith (2017-01-15 11:37:44)
Difficulty: 4 of 5Under Cross cut (in Shapes)
Posted on 2006-03-06 (19 Comments)
Solution Five pieces (likely intended solution) by Brian Smith (2009-06-22 01:42:05)
Difficulty: 4 of 5Under A Quartic Problem (in Just Math)
Posted on 2005-12-22 (7 Comments)
Solution General Solution by Brian Smith (2016-03-20 22:08:13)
Difficulty: 3 of 5Under Polyomino Puzzle (in Shapes)
Posted on 2005-11-22 (21 Comments)
Two Hints by Brian Smith (2005-11-28 08:54:38)
Difficulty: 2 of 5Under Closest to pi (in Just Math)
Posted on 2005-09-25 (25 Comments)
Another approximation by Brian Smith (2005-09-28 02:53:29)
Difficulty: 2 of 5Under Next Numbers Please #6 (in Sequences)
Posted on 2005-09-09 (6 Comments)
re: First Impressions (and some hints) by Brian Smith (2005-09-15 13:16:42)
Difficulty: 3 of 5Under Sorta pythagoric... (in Numbers)
Posted on 2005-09-01 (16 Comments)
Solution by Brian Smith (2005-09-18 03:18:11)
Difficulty: 1 of 5Under Knot or Not? (in Probability)
Posted on 2005-08-04 (17 Comments)
re(3): As I figure it - Definition of a knot by Brian Smith (2005-08-05 01:27:02)
Difficulty: 3 of 5Under Up or down or... (in Science)
Posted on 2005-07-22 (20 Comments)
Solution Another Solution by Brian Smith (2016-02-07 21:55:10)
Difficulty: 2 of 5Under Only 3 lines? (in Geometry)
Posted on 2005-07-14 (12 Comments)
Solution by Brian Smith (2005-07-15 01:23:15)
Difficulty: 3 of 5Under 8 8s (in Numbers)
Posted on 2005-07-11 (24 Comments)
Yet another solution by Brian Smith (2005-07-12 18:34:35)
Difficulty: 2 of 5Under Three Tests, Take Three! (in Weights and Scales)
Posted on 2005-06-23 (15 Comments)
One Gold Ring by Brian Smith (2005-06-27 22:34:17)
Difficulty: 3 of 5Under Similar Sides Sought (in Geometry)
Posted on 2005-06-20 (7 Comments)
Solution re: Almost there...I am there by Brian Smith (2005-06-24 23:48:10)
Difficulty: 3 of 5Under Twenty metal blocks (in Weights and Scales)
Posted on 2005-06-02 (19 Comments)
Identifying all the blocks in less than 19 weighings by Brian Smith (2005-06-07 21:26:13)
Still stuck on 19 by Brian Smith (2005-06-03 21:14:42)
Difficulty: 4 of 5Under The Midville Muddlers (in Logic)
Posted on 2005-04-15 (23 Comments)
Problem source by Brian Smith (2005-04-19 15:08:53)
Difficulty: 3 of 5Under Two false coins (in Weights and Scales)
Posted on 2005-03-25 (11 Comments)
Solution Solution without knowing if the fakes are equal by Brian Smith (2005-06-02 21:18:14)
Difficulty: 5 of 5Under Next Numbers Please #4 (in Sequences)
Posted on 2004-11-16 (13 Comments)
re(2): Solution (if errors in problem) by Brian Smith (2004-11-20 08:18:21)
re: Solution (yes, errors in problem) by Brian Smith (2004-11-20 00:20:10)
Hint by Brian Smith (2004-11-17 23:28:29)
Difficulty: 3 of 5Under Three at a Time (in General)
Posted on 2004-10-26 (23 Comments)
A little clarification: by Brian Smith (2004-10-27 12:52:17)
Difficulty: 2 of 5Under Prime Time Revisited (in Just Math)
Posted on 2004-10-22 (17 Comments)
Arithmetic progression by Brian Smith (2004-10-22 22:23:00)
Difficulty: 3 of 5Under No Rotation Dissection (in Shapes)
Posted on 2004-10-19 (25 Comments)
Hints by Brian Smith (2004-10-21 12:35:34)
re(2): Think I have it by Brian Smith (2004-10-21 12:33:08)
Difficulty: 2 of 5Under Curious Cubic Calculation? (in Numbers)
Posted on 2004-10-13 (14 Comments)
Solution Full Solution by Brian Smith (2004-10-13 13:06:00)
Difficulty: 5 of 5Under Cube the Cube (in Shapes)
Posted on 2004-10-02 (13 Comments)
Square the Square by Brian Smith (2004-10-03 00:29:12)
re: Question by Brian Smith (2004-10-03 00:14:37)
Difficulty: 5 of 5Under Partitioning Space (in Geometry)
Posted on 2004-09-13 (13 Comments)
re: Part 3?? by Brian Smith (2004-09-14 12:55:27)
Difficulty: 4 of 5Under Measure that angle III (in Geometry)
Posted on 2004-09-07 (25 Comments)
re: Solution by cheating by Brian Smith (2004-09-08 15:28:57)
Difficulty: 4 of 5Under Interesting Function (2) (in Just Math)
Posted on 2004-09-03 (6 Comments)
Real numbers by Brian Smith (2004-09-03 15:54:33)
Difficulty: 2 of 5Under Another game of nim (in Games)
Posted on 2004-09-02 (11 Comments)
re(4): Solution - Generalized! by Brian Smith (2004-09-03 22:50:33)
Difficulty: 2 of 5Under Moving Furniture (in General)
Posted on 2004-08-30 (7 Comments)
re(2): Imperfect Armchair Solution - I'm wrong by Brian Smith (2004-09-16 23:38:32)
Difficulty: 2 of 5Under I recognise it..... .....A bit (in Sequences)
Posted on 2004-08-27 (4 Comments)
No Subject by Brian Smith (2004-08-27 08:39:28)
Difficulty: 4 of 5Under Points On A Circle (in Geometry)
Posted on 2004-08-14 (17 Comments)
Thoughts by Brian Smith (2016-02-21 13:58:00)
Difficulty: 3 of 5Under A Tighter Fit (in Shapes)
Posted on 2004-07-29 (20 Comments)
re: Solution by Brian Smith (2004-08-27 08:13:36)
Close but no cigar by Brian Smith (2004-07-30 08:05:41)
Difficulty: 3 of 5Under Four Weights (in Weights and Scales)
Posted on 2004-07-25 (33 Comments)
re(3): done in 3 weighings.... I think =P by Brian Smith (2004-07-26 21:53:33)
re: done in 3 weighings.... I think =P by Brian Smith (2004-07-26 08:11:29)
Difficulty: 3 of 5Under Renumbered Dice (in Probability)
Posted on 2004-07-20 (7 Comments)
Problem Edit by Brian Smith (2004-07-20 11:39:52)
Difficulty: 4 of 5Under A Point and a Cube (in Geometry)
Posted on 2004-07-16 (23 Comments)
re(2): AAAAAAAAARRRRRRRRRGGGGGGGHHHHHHHH! by Brian Smith (2004-07-20 08:12:50)
AAAAAAAAARRRRRRRRRGGGGGGGHHHHHHHH! by Brian Smith (2004-07-18 23:20:14)
re: PD = 11 and not 9? - PROBLEM CORRECTION by Brian Smith (2004-07-18 12:46:40)
re: rough stuff by Brian Smith (2004-07-17 18:59:46)
Difficulty: 2 of 5Under It's not there! (in Cryptography)
Posted on 2004-07-12 (6 Comments)
Imagine a program like this! by Brian Smith (2004-07-12 10:27:13)
Difficulty: 3 of 5Under Random Number Generator (in Algorithms)
Posted on 2004-06-08 (27 Comments)
If it even matters by Brian Smith (2004-06-16 13:47:48)
re: Implementing Thalamus's 47-bits with Brian Smith's bit-stream. by Brian Smith (2004-06-16 13:46:23)
re(5): solution by Brian Smith (2004-06-16 08:48:29)
Bit stream by Brian Smith (2004-06-15 15:19:29)
My algorithm by Brian Smith (2004-06-14 18:59:16)
Difficulty: 2 of 5Under Gloves (in Numbers)
Posted on 2004-06-03 (30 Comments)
Shame on me! by Brian Smith (2004-06-04 20:06:36)
re(2): Better than 28. by Brian Smith (2004-06-04 08:30:36)
Better than 28. by Brian Smith (2004-06-03 21:48:20)
re(3): huh? by Brian Smith (2004-06-03 18:12:08)
Difficulty: 4 of 5Under Hexagonal Dilemma (in Geometry)
Posted on 2004-06-02 (18 Comments)
Solving the arccos equation. by Brian Smith (2004-06-04 08:46:20)
Difficulty: 3 of 5Under More Bird Watching (in Tricks)
Posted on 2004-06-02 (15 Comments)
Solution by Brian Smith (2004-06-02 09:43:06)
Difficulty: 5 of 5Under Next Numbers Please #3 (in Sequences)
Posted on 2004-06-01 (30 Comments)
More terms in the sequence by Brian Smith (2004-06-11 13:01:14)
The numbers I was looking for by Brian Smith (2004-06-10 17:46:47)
re: Solution--another guess... by Brian Smith (2004-06-10 13:34:03)
re(2): Binary by Brian Smith (2004-06-10 11:47:34)
Binary by Brian Smith (2004-06-07 17:24:32)
re: some observations... by Brian Smith (2004-06-03 11:51:54)
Difficulty: 3 of 5Under Yet one more coin sorting problem (in Weights and Scales)
Posted on 2004-05-31 (20 Comments)
Solution by Brian Smith (2004-05-31 15:22:06)
Difficulty: 2 of 5Under The Fur Dresser's Mistake (in Geometry)
Posted on 2004-05-28 (12 Comments)
Solution Solution by Brian Smith (2004-05-29 09:45:27)
Difficulty: 2 of 5Under Faulty Scales (in Weights and Scales)
Posted on 2004-05-23 (8 Comments)
Weighing in on this... by Brian Smith (2004-05-24 10:09:51)
Difficulty: 2 of 5Under Fraction Magic Square (in Numbers)
Posted on 2004-05-22 (6 Comments)
re: Too easy? by Brian Smith (2004-05-24 09:58:45)
Difficulty: 1 of 5Under Block Tour (in Tricks)
Posted on 2004-05-19 (22 Comments)
Solution Solution by Brian Smith (2004-05-19 09:20:39)
Difficulty: 3 of 5Under Square Divisions (in Shapes)
Posted on 2004-05-18 (5 Comments)
re: ummm... by Brian Smith (2004-05-18 22:13:48)
Difficulty: 5 of 5Under Ellipses (in Geometry)
Posted on 2004-05-17 (12 Comments)
re: circumscribe sol w just 1st calculus by Brian Smith (2004-06-01 08:21:53)
Steiner Ellipses by Brian Smith (2004-05-18 22:02:25)
Solution General Solution by Brian Smith (2004-05-18 14:00:29)
Difficulty: 3 of 5Under Powers of powers (in Calculus)
Posted on 2004-05-11 (13 Comments)
Solution Power Tower by Brian Smith (2004-05-11 15:29:34)
Difficulty: 2 of 5Under Particle Acceleration (in General)
Posted on 2004-05-06 (25 Comments)
Solution by Brian Smith (2004-05-06 09:53:03)
Difficulty: 3 of 5Under Strange pyramid (in Geometry)
Posted on 2004-05-03 (10 Comments)
Distinct integer edges by Brian Smith (2004-05-04 11:38:17)
Difficulty: 2 of 5Under Missing Clue (in Logic)
Posted on 2004-04-27 (18 Comments)
Solution by Brian Smith (2004-04-27 12:19:11)
Difficulty: 5 of 5Under The Fifteen Steps (in Games)
Posted on 2004-04-26 (16 Comments)
Finally, the solution for the no-passing game. by Brian Smith (2005-04-19 15:36:55)
Hints/Tips Four man game by Brian Smith (2004-04-27 15:24:16)
Solution The second part by Brian Smith (2004-04-27 08:40:16)
Difficulty: 3 of 5Under Finding the maximum (in Algorithms)
Posted on 2004-04-21 (16 Comments)
Low, Median and High by Brian Smith (2004-04-21 20:06:02)
Difficulty: 2 of 5Under The Central Cell (in Games)
Posted on 2004-04-16 (11 Comments)
re(2): The second part by Brian Smith (2004-04-16 19:19:29)
The second part by Brian Smith (2004-04-16 14:09:32)
Difficulty: 3 of 5Under The many sages (in Logic)
Posted on 2004-04-13 (25 Comments)
Many Sages by Brian Smith (2004-04-13 14:05:04)
Difficulty: 2 of 5Under A flat ball? (in Geometry)
Posted on 2004-04-08 (25 Comments)
re: A related question... by Brian Smith (2004-04-13 14:26:51)
re(2): The 720 degree deficit - Euler's formula by Brian Smith (2004-04-12 10:26:10)
Pentagons and Hexagons by Brian Smith (2004-04-12 09:15:46)
Difficulty: 2 of 5Under 2 digit Palindrome (in Numbers)
Posted on 2004-04-05 (24 Comments)
re: 3-digits soln by Brian Smith (2004-04-05 12:12:54)
The infamous 196 by Brian Smith (2004-04-05 09:21:29)
Difficulty: 2 of 5Under Another Pack of Prudent Pirates (in General)
Posted on 2004-04-01 (12 Comments)
Dividing the pieces of eight by Brian Smith (2004-04-01 14:22:33)
Difficulty: 3 of 5Under new operations (in Just Math)
Posted on 2004-03-31 (14 Comments)
The _ operator by Brian Smith (2004-03-31 14:52:43)
Difficulty: 3 of 5Under Safety from the Queen II (in General)
Posted on 2004-03-30 (6 Comments)
10 so far . . . by Brian Smith (2004-03-30 14:19:58)
Difficulty: 3 of 5Under Poetry in motion (in Riddles)
Posted on 2004-03-25 (152 Comments)
Something that crossed my mind . . . by Brian Smith (2004-03-25 09:15:36)
Difficulty: 4 of 5Under Chords and Chords (in Geometry)
Posted on 2004-03-24 (23 Comments)
Thoughts by Brian Smith (2004-03-25 09:00:56)
Difficulty: 3 of 5Under Fraction Frustration (in Numbers)
Posted on 2004-03-24 (10 Comments)
Solution by Brian Smith (2004-03-24 08:48:28)
Difficulty: 3 of 5Under A dangerous compound (in Science)
Posted on 2004-03-22 (43 Comments)
Solution DHMO by Brian Smith (2004-03-22 09:03:37)
Difficulty: 2 of 5Under Patrolling the beat (in General)
Posted on 2004-03-18 (16 Comments)
Another answer by Brian Smith (2004-03-23 08:48:54)
Difficulty: 3 of 5Under A point in a square (in Geometry)
Posted on 2004-03-17 (7 Comments)
Two possibilities by Brian Smith (2004-03-18 09:22:22)
Difficulty: 4 of 5Under Toggler and Triggler (in Games)
Posted on 2004-03-12 (10 Comments)
5x5 triggler solution by Brian Smith (2004-03-16 10:24:08)
Difficulty: 4 of 5Under Primal Magic Square (in General)
Posted on 2004-03-09 (16 Comments)
re(2): More Solutions by Brian Smith (2004-03-11 21:09:13)
More Solutions by Brian Smith (2004-03-11 17:14:14)
Solution using 1 by Brian Smith (2004-03-10 11:33:31)
Difficulty: 3 of 5Under The Sliding Rooks (in Games)
Posted on 2004-03-08 (17 Comments)
re: the Sliding Rooks in 4 moves by Brian Smith (2004-04-15 09:23:00)
Difficulty: 3 of 5Under Truncated Cube (in Shapes)
Posted on 2004-03-04 (7 Comments)
Solution by Brian Smith (2004-03-04 10:29:45)
Difficulty: 3 of 5Under Open By Majority (in General)
Posted on 2004-03-03 (45 Comments)
re(4): About the keys and locks by Brian Smith (2004-03-04 12:04:14)
re: Revised solution to revised puzzle by Brian Smith (2004-03-04 12:03:20)
re(2): About the keys and locks by Brian Smith (2004-03-04 10:32:10)
About the keys and locks by Brian Smith (2004-03-04 10:19:39)
Difficulty: 4 of 5Under B-Palindromes (in Numbers)
Posted on 2004-02-25 (11 Comments)
A Solution by Brian Smith (2004-02-25 15:02:57)
Difficulty: 3 of 5Under Looking for n (in Numbers)
Posted on 2004-02-24 (13 Comments)
Solution (?) by Brian Smith (2004-02-24 15:36:24)
Difficulty: 4 of 5Under Repeated addition (in Sequences)
Posted on 2004-02-20 (15 Comments)
Solution Solution by Brian Smith (2004-02-23 13:06:27)
Some thoughts by Brian Smith (2004-02-20 14:31:35)
Difficulty: 4 of 5Under Archimedes' Cattle (in General)
Posted on 2004-02-17 (6 Comments)
re: full solution - exact fractions by Brian Smith (2004-02-18 11:32:13)
Difficulty: 3 of 5Under Letters to numbers (in Cryptography)
Posted on 2004-02-13 (36 Comments)
re: Not 84! ?? by Brian Smith (2004-02-20 12:20:07)
"Equality isnt important" and 84 by Brian Smith (2004-02-20 11:53:04)
84? by Brian Smith (2004-02-20 09:39:10)
Difficulty: 4 of 5Under Triple Negative (in Logic)
Posted on 2004-02-12 (19 Comments)
Hints/Tips Inverting seven inputs with three inverters by Brian Smith (2013-10-26 11:47:17)
Difficulty: 3 of 5Under A = B = AB (in Word Problems)
Posted on 2004-02-10 (28 Comments)
Out of all the responses so far ...... by Brian Smith (2004-02-12 09:07:34)
Difficulty: 3 of 5Under Set Me Up (in Numbers)
Posted on 2004-02-10 (31 Comments)
re(4): Solution FINAL WORD by Brian Smith (2004-02-10 15:13:44)
Solution by Brian Smith (2004-02-10 10:58:38)
Difficulty: 3 of 5Under The Conversing Club 2 (in General)
Posted on 2004-02-06 (5 Comments)
Round Robin by Brian Smith (2004-02-06 12:40:52)
Difficulty: 2 of 5Under Two Packs Of Cards (in Probability)
Posted on 2004-02-05 (16 Comments)
Solution by Brian Smith (2004-02-05 09:09:12)
Difficulty: 3 of 5Under A Boy, a Girl, a Dog, and a Bicycle (in General)
Posted on 2004-02-03 (26 Comments)
Solution by Brian Smith (2004-02-04 10:44:36)
Difficulty: 2 of 5Under The glass balls (in General)
Posted on 2004-01-30 (5 Comments)
Answer by Brian Smith (2004-01-30 14:08:41)
Difficulty: 3 of 5Under Medals (in Numbers)
Posted on 2004-01-29 (5 Comments)
Solution by Brian Smith (2004-01-29 14:46:46)
Difficulty: 2 of 5Under Game of luck (in Probability)
Posted on 2004-01-27 (23 Comments)
solution by Brian Smith (2004-01-27 13:56:34)
Difficulty: 1 of 5Under Alphanumeric Ambiguity (in Word Problems)
Posted on 2004-01-26 (15 Comments)
Solution The word is... by Brian Smith (2004-01-26 09:28:00)
Difficulty: 5 of 5Under Fill the Grid (in Numbers)
Posted on 2004-01-21 (29 Comments)
Solution Update by Brian Smith (2005-03-31 23:56:16)
re: My algorithm - re: source code by Brian Smith (2004-02-05 12:16:25)
To Rawlyn by Brian Smith (2004-02-02 13:35:09)
re(2): Very slightly better... by Brian Smith (2004-02-02 09:52:16)
re: I'm on it - Good luck by Brian Smith (2004-01-30 09:38:33)
Difficulty: 2 of 5Under Squares and Rectangles (in Just Math)
Posted on 2004-01-21 (22 Comments)
Solution by Brian Smith (2004-01-21 09:22:00)
Difficulty: 3 of 5Under Sorting Coins (in Weights and Scales)
Posted on 2004-01-18 (11 Comments)
There is a solution in . . . . by Brian Smith (2004-01-20 12:15:45)
Difficulty: 5 of 5Under How many points can you place? (in Games)
Posted on 2004-01-16 (25 Comments)
This problem is also known as ... by Brian Smith (2004-01-21 10:54:39)
Difficulty: 3 of 5Under ETW (in Word Problems)
Posted on 2004-01-09 (15 Comments)
Three words by Brian Smith (2004-01-09 10:22:39)
Difficulty: 4 of 5Under A smart prisoner? (in Probability)
Posted on 2004-01-08 (23 Comments)
re: Solution by Brian Smith (2004-01-08 11:49:44)
Solution Solution by Brian Smith (2004-01-08 11:45:51)
Difficulty: 3 of 5Under I've Been Working... (in Geometry)
Posted on 2004-01-07 (4 Comments)
re: First Steps by Brian Smith (2004-01-07 11:17:58)
Difficulty: 3 of 5Under Divisibility (in Just Math)
Posted on 2004-01-06 (11 Comments)
Solution by Brian Smith (2004-01-06 10:56:19)
Difficulty: 3 of 5Under Two Encrypted Questions (in Cryptography)
Posted on 2003-12-22 (5 Comments)
Hints by Brian Smith (2004-01-02 16:16:46)
Difficulty: 3 of 5Under Shapely Figures (in Sequences)
Posted on 2003-12-12 (10 Comments)
Solution by Brian Smith (2003-12-12 10:42:48)
Difficulty: 4 of 5Under Three threes, or two twos? (in Just Math)
Posted on 2003-12-09 (4 Comments)
f(x) = x+1 by Brian Smith (2003-12-09 15:43:35)
Difficulty: 2 of 5Under The Ladder (in Just Math)
Posted on 2003-12-09 (20 Comments)
re(6): solution by Brian Smith (2003-12-09 12:08:02)
Solution Solution by Brian Smith (2003-12-09 11:59:02)
Difficulty: 2 of 5Under Squares and Cubes (in Numbers)
Posted on 2003-12-06 (21 Comments)
Any other primitive solutions? by Brian Smith (2003-12-09 10:35:35)
Difficulty: 3 of 5Under Piece o' Cake (in Geometry)
Posted on 2003-12-04 (22 Comments)
re(3): solution by Brian Smith (2003-12-05 09:56:49)
An idea by Brian Smith (2003-12-04 12:45:38)
Difficulty: 4 of 5Under Tricky Triangle (in Numbers)
Posted on 2003-12-03 (15 Comments)
re: wording change by Brian Smith (2003-12-03 11:45:15)
Difficulty: 4 of 5Under The Amazing Stamp (in Geometry)
Posted on 2003-12-01 (45 Comments)
Solution by Brian Smith (2003-12-03 11:22:29)
Three points by Brian Smith (2003-12-01 14:28:30)
Difficulty: 3 of 5Under Three numbers (in Just Math)
Posted on 2003-11-17 (22 Comments)
Solution Another Solution by Brian Smith (2016-02-21 15:49:21)
Difficulty: 1 of 5Under Not another one! (in Tricks)
Posted on 2003-11-13 (26 Comments)
Keep off the grass by Brian Smith (2003-11-13 12:54:26)
Difficulty: 3 of 5Under Your Ducky Number (in Numbers)
Posted on 2003-11-07 (14 Comments)
Solution by Brian Smith (2003-11-07 11:05:15)
Difficulty: 2 of 5Under More Trees (in Shapes)
Posted on 2003-10-30 (27 Comments)
re: Full Solution - Another solution by Brian Smith (2003-10-31 13:02:02)
Difficulty: 4 of 5Under Tiger - Man (in General)
Posted on 2003-10-29 (15 Comments)
re(2): Specifically... by Brian Smith (2003-10-30 12:09:48)
Difficulty: 3 of 5Under Short but Sweet (in Games)
Posted on 2003-10-28 (49 Comments)
Take me out to the ball game .... by Brian Smith (2003-10-28 10:57:35)
Difficulty: 3 of 5Under Pizza Cut (in Just Math)
Posted on 2003-10-27 (15 Comments)
re(4): full solution by Brian Smith (2003-10-29 11:41:03)
Difficulty: 4 of 5Under Prime sequence (in Numbers)
Posted on 2003-10-23 (14 Comments)
22 terms by Brian Smith (2003-10-23 10:55:45)
Difficulty: 4 of 5Under That's a Load of Craps! (in Probability)
Posted on 2003-10-22 (13 Comments)
A start by Brian Smith (2003-10-22 12:38:27)
Difficulty: 2 of 5Under Summer Vacation (in Riddles)
Posted on 2003-10-22 (41 Comments)
re(2): Are you sure what these geographic points are ? by Brian Smith (2003-10-22 10:19:37)
Difficulty: 5 of 5Under The Nth Sequence (in Sequences)
Posted on 2003-10-21 (9 Comments)
Nth term by Brian Smith (2003-10-21 15:44:24)
Difficulty: 3 of 5Under Twin Trouble (in Just Math)
Posted on 2003-10-21 (14 Comments)
re(2): A solution by Brian Smith (2003-10-23 11:24:54)
A solution by Brian Smith (2003-10-21 11:31:01)
Difficulty: 4 of 5Under Four Tangent Circles (in Shapes)
Posted on 2003-10-20 (13 Comments)
re: solution by Brian Smith (2003-10-21 09:30:20)
Difficulty: 5 of 5Under Difficult Sequence (in Sequences)
Posted on 2003-10-18 (19 Comments)
re: An alternate approach - I think I got it by Brian Smith (2003-10-27 10:46:37)
re(2): An alternate approach by Brian Smith (2003-10-21 13:53:37)
An alternate approach by Brian Smith (2003-10-21 13:22:16)
re: AARRGG.. by Brian Smith (2003-10-20 15:21:35)
Difficulty: 4 of 5Under Hello Operator (in Just Math)
Posted on 2003-10-17 (19 Comments)
re: freaky solution by Brian Smith (2003-10-29 13:12:08)
re: My solution by Brian Smith (2003-10-21 11:05:20)
Difficulty: 3 of 5Under Remainder (in Just Math)
Posted on 2003-10-16 (10 Comments)
Hints/Tips By inspection... by Brian Smith (2003-10-16 09:38:41)
Difficulty: 3 of 5Under Playing With Marbles (in Probability)
Posted on 2003-10-13 (23 Comments)
re: Have you lost your marbles ? by Brian Smith (2003-10-13 21:04:14)
Difficulty: 1 of 5Under 00 Separate (in Just Math)
Posted on 2003-10-10 (13 Comments)
A solution by Brian Smith (2003-10-10 15:22:26)
Difficulty: 4 of 5Under Strike a Chord (..Any Chord) (in Geometry)
Posted on 2003-10-09 (51 Comments)
re: Different Approach (Continued) by Brian Smith (2003-10-13 19:34:14)
re: An elegant solution by Brian Smith (2003-10-13 09:46:13)
Difficulty: 3 of 5Under Fifth Thursdays (in Algorithms)
Posted on 2003-10-06 (2 Comments)
A few thoughts.. by Brian Smith (2003-10-07 14:53:33)
Difficulty: 3 of 5Under Line Drive (in Sequences)
Posted on 2003-10-03 (20 Comments)
re: Aha! by Brian Smith (2003-10-09 09:48:46)
Difficulty: 3 of 5Under The Mazing (in Algorithms)
Posted on 2003-10-02 (4 Comments)
Going in Circles by Brian Smith (2003-10-03 09:29:32)
Difficulty: 3 of 5Under Words in Common 7 (in Word Problems)
Posted on 2003-09-30 (17 Comments)
re(2): Not only do they all have 7 letters, but... by Brian Smith (2003-10-01 14:37:37)
Difficulty: 4 of 5Under e and pi (in Just Math)
Posted on 2003-09-26 (7 Comments)
Solution by Brian Smith (2003-09-26 14:30:43)
Difficulty: 3 of 5Under Simultaneous Equations (in Numbers)
Posted on 2003-09-25 (19 Comments)
re(2): Trivial solution by Brian Smith (2003-09-25 15:23:33)
The Solution by Brian Smith (2003-09-25 15:22:48)
Trivial solution by Brian Smith (2003-09-25 14:31:14)
Difficulty: 4 of 5Under Word Ladders (in Algorithms)
Posted on 2003-09-24 (11 Comments)
Initial thoughts by Brian Smith (2003-09-24 14:20:57)
Difficulty: 3 of 5Under Origamic (in Geometry)
Posted on 2003-09-23 (13 Comments)
'No Comment' should be 'Solution' by Brian Smith (2003-09-23 15:14:54)
Solution No Subject by Brian Smith (2003-09-23 15:13:33)
Difficulty: 2 of 5Under What Happened ? (in Numbers)
Posted on 2003-09-23 (10 Comments)
Solution and more by Brian Smith (2003-09-23 11:43:19)
Difficulty: 2 of 5Under Construct a Pentagram (in Shapes)
Posted on 2003-09-22 (12 Comments)
A trick by Brian Smith (2003-09-22 09:28:00)
Difficulty: 5 of 5Under print 'print 'print 'print ... (in Algorithms)
Posted on 2003-09-19 (32 Comments)
re: Solution by Brian Smith (2003-11-11 13:10:12)
Self Printing Program in Java by Brian Smith (2003-09-24 14:19:11)
re: Real solution(JAVA) - another problem by Brian Smith (2003-09-24 11:31:08)
re: Java by Brian Smith (2003-09-24 09:14:46)
re(2): Self Printing Program in BASIC by Brian Smith (2003-09-23 14:27:23)
re: Self Printing Program in BASIC by Brian Smith (2003-09-23 13:38:07)
Self Printing Program in BASIC by Brian Smith (2003-09-23 13:36:54)
Some Thoughts A little theory by Brian Smith (2003-09-22 09:34:43)
On a C64 .... by Brian Smith (2003-09-19 13:58:29)
Difficulty: 1 of 5Under The famous horse (in Tricks)
Posted on 2003-09-17 (26 Comments)
re: WRONG, Gamer !!!!!!!! by Brian Smith (2003-09-18 15:08:21)
Difficulty: 2 of 5Under Pip Me! (in General)
Posted on 2003-09-16 (12 Comments)
No Subject by Brian Smith (2003-09-16 10:16:48)
Difficulty: 4 of 5Under Third Base (in Cryptography)
Posted on 2003-09-15 (14 Comments)
Some Thoughts I think Im onto something .... by Brian Smith (2003-09-17 14:13:36)
Difficulty: 4 of 5Under Collision Course (in Algorithms)
Posted on 2003-09-11 (13 Comments)
re: Two robots: I really need to proofread better by Brian Smith (2003-09-11 14:33:46)
Two robots, same program by Brian Smith (2003-09-11 14:29:13)
Difficulty: 3 of 5Under Counting Exercise (in Numbers)
Posted on 2003-09-10 (10 Comments)
12 more cents by Brian Smith (2003-09-11 09:41:03)
My 15 cents on this by Brian Smith (2003-09-11 09:38:14)
Difficulty: 3 of 5Under Got a Minute? (in Logic)
Posted on 2003-09-10 (36 Comments)
re: double speed by Brian Smith (2003-10-13 19:36:49)
Solution Tick Tock goes the clock ... (Solution) by Brian Smith (2003-10-06 14:30:02)
re(2): Closer and closer by Brian Smith (2003-09-18 14:31:49)
Closer and closer by Brian Smith (2003-09-16 10:01:39)
Thoughts by Brian Smith (2003-09-10 11:26:06)
Difficulty: 4 of 5Under Marbles Bonanza (in Paradoxes)
Posted on 2003-09-08 (87 Comments)
Defining Infinity by Brian Smith (2003-09-09 09:59:51)
Difficulty: 4 of 5Under Lumber Netters (in Numbers)
Posted on 2003-09-08 (13 Comments)
Sequence Four by Brian Smith (2003-10-07 10:55:51)
Difficulty: 3 of 5Under Towers of Hanoi (in Algorithms)
Posted on 2003-09-07 (22 Comments)
Parity by Brian Smith (2003-09-09 10:06:49)
Difficulty: 3 of 5Under Roadway Riddle (in General)
Posted on 2003-08-31 (25 Comments)
Honk that horn! by Brian Smith (2003-09-03 14:33:10)
Difficulty: 4 of 5Under Scale game (in Weights and Scales)
Posted on 2003-08-06 (11 Comments)
Solution re: Better than 50% - details by Brian Smith (2003-09-02 14:19:40)
Better than 50% by Brian Smith (2003-09-02 09:44:56)
Difficulty: 4 of 5Under Leapfrog (in General)
Posted on 2003-06-24 (18 Comments)
Solution Level 5 Solution by Brian Smith (2003-10-16 12:18:26)
20 checkers to level 4 by Brian Smith (2003-09-02 09:58:10)
Difficulty: 3 of 5Under A Change of Mind (in Just Math)
Posted on 2003-06-18 (13 Comments)
Solution re: Challenge Accepted (Solution) by Brian Smith (2022-10-22 16:27:45)
Difficulty: 4 of 5Under Knights being Liars? (in Liars and Knights)
Posted on 2003-06-10 (24 Comments)
Perception and Reality by Brian Smith (2003-06-10 15:07:47)
Difficulty: 3 of 5Under Faces and Eyes (in Riddles)
Posted on 2003-06-10 (19 Comments)
Some thoughts by Brian Smith (2003-06-10 15:11:51)
Difficulty: 1 of 5Under Number machine problem 1 (in Algorithms)
Posted on 2003-06-08 (12 Comments)
Category Placement? by Brian Smith (2003-06-09 15:56:35)
Difficulty: 5 of 5Under Let it Snow (in Calculus)
Posted on 2003-06-05 (12 Comments)
re: Solution by Brian Smith (2003-06-05 13:32:42)
Difficulty: 3 of 5Under Fifty Bucks for a Dollar bill? (in Logic)
Posted on 2003-06-03 (66 Comments)
re(4): Here's an idea by Brian Smith (2003-06-05 17:03:07)
re: Here's an idea by Brian Smith (2003-06-05 13:39:15)
Its all about the first bid. by Brian Smith (2003-06-04 14:16:05)
Thinking about making a profit by Brian Smith (2003-06-03 16:37:28)
Difficulty: 2 of 5Under Primary Product (in Just Math)
Posted on 2003-06-02 (26 Comments)
Off the top of my head... by Brian Smith (2003-06-02 13:41:36)
Difficulty: 3 of 5Under How did he die? (in Riddles)
Posted on 2003-06-02 (41 Comments)
Death Theory by Brian Smith (2003-06-03 17:05:30)
Difficulty: 3 of 5Under 10001, 100010001, .... (in Numbers)
Posted on 2003-05-23 (12 Comments)
First observations by Brian Smith (2003-05-23 14:21:20)
Difficulty: 5 of 5Under Regular Pentagon (Classic) (in Geometry)
Posted on 2003-05-15 (17 Comments)
If you really want a challenge ... by Brian Smith (2003-05-23 15:13:01)
Difficulty: 5 of 5Under Many coins - one fake (in Weights and Scales)
Posted on 2003-05-14 (20 Comments)
Weighing in on this one.... by Brian Smith (2003-05-14 09:21:22)
Difficulty: 3 of 5Under Tetra-productial numbers (in Numbers)
Posted on 2003-05-13 (7 Comments)
Solution by Brian Smith (2003-05-13 08:03:13)
Difficulty: 3 of 5Under Next in Line (in Sequences)
Posted on 2003-05-12 (9 Comments)
Next up is ... by Brian Smith (2003-05-12 08:16:42)
Difficulty: 3 of 5Under Paint My Love (in Just Math)
Posted on 2003-05-12 (5 Comments)
Solution Linear maximization (Solution) by Brian Smith (2003-05-12 05:09:37)
Difficulty: 2 of 5Under Internal & External (in Sequences)
Posted on 2003-05-09 (16 Comments)
Some Thoughts re(2): A Painted Cube by Brian Smith (2003-05-14 04:34:11)
Some Thoughts A Painted Cube by Brian Smith (2003-05-13 07:11:22)
First guess.... by Brian Smith (2003-05-09 09:17:38)
Difficulty: 4 of 5Under Magic trick (in Games)
Posted on 2003-05-08 (20 Comments)
re(2): How i would do it - How it works by Brian Smith (2003-05-08 07:49:47)
How i would do it by Brian Smith (2003-05-08 07:34:41)
Difficulty: 4 of 5Under Least But Not The Last (in Logic)
Posted on 2003-05-08 (13 Comments)
Some Thoughts {P, r, o, o, f} by Brian Smith (2003-05-08 06:55:32)
Difficulty: 2 of 5Under Cool sequence 2 (in Sequences)
Posted on 2003-05-07 (16 Comments)
re: I had a cool theory by Brian Smith (2003-05-08 10:02:17)
Off the top of my head.... by Brian Smith (2003-05-07 08:39:12)
Difficulty: 3 of 5Under Large Number (in Just Math)
Posted on 2003-05-06 (18 Comments)
Try this number by Brian Smith (2003-05-06 07:58:44)
Difficulty: 4 of 5Under The Hat and the River (in General)
Posted on 2003-05-05 (24 Comments)
re: solution by Brian Smith (2003-05-06 08:12:18)
I remember this one by Brian Smith (2003-05-05 10:18:10)
Difficulty: 3 of 5Under Can 1 Dollar = 1 Cent (in Tricks)
Posted on 2003-05-03 (27 Comments)
Solution by Brian Smith (2003-05-05 03:42:41)
Difficulty: 3 of 5Under 9 random digits (in Algorithms)
Posted on 2003-05-02 (20 Comments)
The goal of this problem.... by Brian Smith (2003-05-02 08:16:58)
Difficulty: 3 of 5Under Can You Find The Rule (in Sequences)
Posted on 2003-05-02 (11 Comments)
re(2): The next next number by Brian Smith (2003-05-08 08:05:39)
The next next number by Brian Smith (2003-05-07 08:45:44)
Solution by Brian Smith (2003-05-02 03:35:11)
Difficulty: 3 of 5Under Pumpkins (in Just Math)
Posted on 2003-05-01 (16 Comments)
re: by Brian Smith (2003-05-05 04:48:49)
Solution by Brian Smith (2003-05-01 09:05:07)
Difficulty: 3 of 5Under 3 colors (in Shapes)
Posted on 2003-05-01 (28 Comments)
re(2): Proof by contradiction by Brian Smith (2003-05-07 03:40:58)
Solution Proof by contradiction by Brian Smith (2003-05-01 08:37:44)
re: Could be right by Brian Smith (2003-05-01 04:54:27)
Difficulty: 3 of 5Under The Three Friends (in Riddles)
Posted on 2003-04-29 (27 Comments)
Guesses for two and three by Brian Smith (2003-04-29 09:23:14)
Difficulty: 4 of 5Under Ratio of Volumes (in Just Math)
Posted on 2003-04-25 (5 Comments)
solution by Brian Smith (2003-04-28 06:25:58)
Difficulty: 3 of 5Under Cool sequence 1 (in Sequences)
Posted on 2003-04-24 (9 Comments)
This sequence is super..... by Brian Smith (2003-04-30 07:42:28)
Difficulty: 4 of 5Under Who Ordered the Pi? (in Word Problems)
Posted on 2003-04-21 (11 Comments)
The 5th degree vs. The interrupted sequence by Brian Smith (2003-04-21 05:52:35)
Difficulty: 4 of 5Under Paradox or a Riddle (in Famous Riddles)
Posted on 2003-04-18 (31 Comments)
Solution Two Solutions by Brian Smith (2003-04-18 05:10:13)
Difficulty: 3 of 5Under Make the least of these digits (in Numbers)
Posted on 2003-04-13 (68 Comments)
re: A small idea, an even smaller number by Brian Smith (2003-04-25 05:43:06)
A small idea, an even smaller number by Brian Smith (2003-04-25 05:40:38)
Difficulty: 3 of 5Under Gasoline Problem (in Weights and Scales)
Posted on 2003-04-11 (37 Comments)
12, 14 but no 13 by Brian Smith (2003-04-14 04:27:28)
Difficulty: 2 of 5Under Strawberries! (in Logic)
Posted on 2003-04-10 (18 Comments)
Solution by Brian Smith (2003-04-10 08:21:48)
Difficulty: 2 of 5Under Envelopes (in Logic)
Posted on 2003-04-10 (39 Comments)
Solution Solution without using case-by-case analysis by Brian Smith (2017-01-02 14:03:56)
Difficulty: 5 of 5Under a2o3t6t7 (in Cryptography)
Posted on 2003-04-09 (17 Comments)
Solution Cs and Qs: Different answer by Brian Smith (2003-04-15 08:17:37)
Difficulty: 5 of 5Under Pi problem (in Numbers)
Posted on 2002-12-11 (14 Comments)
Hints/Tips Video explanation by Brian Smith (2019-03-31 11:23:14)
Difficulty: 3 of 5Under What came first? (in Sequences)
Posted on 2002-12-04 (12 Comments)
Factorial fun by Brian Smith (2003-04-30 07:35:15)
Difficulty: 4 of 5Under Zero to 150 in 2003 (in Numbers)
Posted on 2002-11-29 (65 Comments)
re: ehm.. by Brian Smith (2003-04-25 04:48:01)
Solution Using trig functions: Zero to 150 completed by Brian Smith (2003-04-24 06:15:39)
function f(x) = x+1 by Brian Smith (2003-04-15 04:22:56)
Difficulty: 2 of 5Under In the Act (in General)
Posted on 2002-11-25 (15 Comments)
Good one! by Brian Smith (2003-05-02 04:39:43)
Difficulty: 4 of 5Under Niners (in Numbers)
Posted on 2002-10-23 (15 Comments)
Solution Here is my proof by Brian Smith (2003-05-08 06:26:33)
Difficulty: 2 of 5Under Cops and Robbers (in Riddles)
Posted on 2002-08-17 (22 Comments)
re: easy by Brian Smith (2003-09-24 15:25:19)
Difficulty: 5 of 5Under Grid Pathways (in Shapes)
Posted on 2002-07-22 (29 Comments)
Solution Solution by Brian Smith (2003-12-02 12:03:59)
re: One Equation - equation in int and mod by Brian Smith (2003-04-29 09:11:22)
3 x n by Brian Smith (2003-04-22 06:20:52)
Some Thoughts Upper bound formula by Brian Smith (2003-04-15 05:25:06)
Difficulty: 3 of 5Under Maximum Value (in Calculus)
Posted on 2002-06-19 (19 Comments)
Solution Solution: Part 3 by Brian Smith (2003-09-04 12:01:53)
Solution Solution: Part 2 by Brian Smith (2003-09-04 11:46:19)
Solution Solution: Part 1 by Brian Smith (2003-09-04 11:15:27)
Some Thoughts re: Most of a solution - Solution confimed. by Brian Smith (2003-04-28 04:13:15)
re(2): Most of a solution by Brian Smith (2003-04-09 05:29:11)
Some Thoughts Most of a solution by Brian Smith (2003-04-08 09:59:54)
Difficulty: 3 of 5Under Class act (in Numbers)
Posted on 2002-05-02 (16 Comments)
Really not that hard by Brian Smith (2003-05-15 04:42:49)
Difficulty: 2 of 5Under Four people on a bridge. (in General)
Posted on 2002-04-14 (15 Comments)
re: Not that long - Too slow by Brian Smith (2003-10-15 09:44:25)
Difficulty: 2 of 5Under Make four equilateral triangles (in Shapes)
Posted on 2002-03-28 (10 Comments)
re: another way? by Brian Smith (2003-10-27 10:51:08)
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