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Stefan4024
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answer
71
Is $0! = 1$ because there is only one way to do nothing?
Jul 1, 2016
question
43
Fermat's Last Theorem near misses?
Oct 14, 2013
answer
25
Show that from a group of seven people whose (integer) ages add up to 332 one can select three people with the total age at least 142.
Aug 27, 2015
question
21
Prove $\sqrt{a} + \sqrt{b} + \sqrt{c} \ge ab + bc + ca$
Mar 20, 2013
answer
21
Is there a way to get trig functions without a calculator?
Sep 22, 2013
question
19
Find the smallest k such that $n^k > \sum_{i=0}^{n-1} i^k$
Feb 21, 2014
question
18
Prove $\sqrt{3a + b^3} + \sqrt{3b + c^3} + \sqrt{3c + a^3} \ge 6$
Mar 20, 2013
answer
17
Is every finite group a normal subgroup of a symmetric group?
Jun 27, 2016
answer
15
Proving that the polynomial $10X^6-15X^2+7$ is irreducible in $\mathbb{Q}[X].$
Jul 2, 2018
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15
Objects are shuffled. What is the probability that exactly one object remains in its original position?
Jan 24, 2017
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Group the numbers C++
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Hungarian algorithm with multiple assignments
7
Apple eating problem
6
Number of combinations with LEGO plastic bricks C++
5
How to delete all event listeners at once in AS3