Impossible Math Riddle
97705
How Old Are Children?
123690
Olympiad question on Pigeonhole principle
29887
Pigeon Hole Principle Problem I'm kind of lost for how to go about this.
72420
Is $\mathbb{N}$ impossible to pin down?
140039
The parking problem riddle
35484
A question in math mode
60661
How to solve this combination problem quickly?
73287
Project Euler Question 14 (Collatz Problem)
31954
Why this proof $0=1$ is wrong?(breakfast joke)
113344
How do we prove that something is unprovable?
68882
Path to Combinatorics Problem [$1.11$]
91881
How solve this equation
60385
How to solve this sequence $165,195,255,285,345,x$
121240
How should one approch Project Euler problem 213 ("Flea Circus")?
55718
Is zero odd or even?
144025
Number of Solutions in this Number Puzzle
34666
Prove that the expression cannot be a power of 2