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15
Math.TechQA.Club
2026-04-07 21:13:52
200
Views
What is a combination of the numbers 1, 2, 3, 4, and 5 that yield 170, using only basic operations (+, -, *, /, ^) and the factorial (!)?
Published on
07 Apr 2026 - 21:13
#arithmetic
#recreational-mathematics
83
Views
having trouble finding the explicit function for a pursuit problem
Published on
11 Apr 2026 - 16:32
#calculus
#functional-analysis
#ordinary-differential-equations
#vectors
#recreational-mathematics
131
Views
N people in a pit are required to press their kill buttons one at a time, what percentage of the initial population is expected to live on?
Published on
04 Aug 2023 - 5:08
#calculus
#probability
#combinatorics
#recreational-mathematics
75
Views
Help on a simple-seeming modular arithmetic question
Published on
11 Apr 2026 - 15:53
#elementary-number-theory
#modular-arithmetic
#contest-math
#recreational-mathematics
104
Views
Concatenation of square numbers is a square?
Published on
30 Mar 2026 - 17:01
#number-theory
#recreational-mathematics
#square-numbers
126
Views
Maths challenge question: Is my reasoning behind this question correct?
Published on
07 Aug 2023 - 0:13
#solution-verification
#contest-math
#recreational-mathematics
43
Views
A problem involving vector form of law of cosines
Published on
08 Aug 2023 - 1:35
#trigonometry
#recreational-mathematics
37
Views
Half angle identities for complex trig forms
Published on
11 Apr 2026 - 8:54
#trigonometry
#recreational-mathematics
131
Views
Finding or parametrizing integer solutions to $pq(p^2-q^2)=rs(r^2-s^2)$
Published on
25 Mar 2026 - 12:53
#diophantine-equations
#recreational-mathematics
#elliptic-curves
#arithmetic-progressions
#magic-square
60
Views
Analyzing a specific function
Published on
11 Apr 2026 - 9:31
#elementary-number-theory
#contest-math
#recreational-mathematics
209
Views
Help me find the inverse of this function
Published on
26 Mar 2026 - 14:19
#recreational-mathematics
#inverse-function
#lambert-w
223
Views
When is "do-almost-nothing" a good idea in CHOMP?
Published on
10 Apr 2026 - 15:53
#combinatorics
#recreational-mathematics
#combinatorial-game-theory
72
Views
How would you formally describe a common aspect of several recreational river crossing problems?
Published on
11 Apr 2026 - 5:08
#recreational-mathematics
137
Views
Hexagon to Rectangle dissection: 3 pieces minimal?
Published on
09 Apr 2026 - 7:29
#recreational-mathematics
#plane-geometry
#dissection
79
Views
Formulas I created for the area of any curved closed shape
Published on
17 Aug 2023 - 22:34
#calculus
#integration
#geometry
#numerical-methods
#recreational-mathematics
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