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Top Questions
8
votes
Basic Olympiad number theory problem about prime numbers
number-theory
elementary-number-theory
prime-numbers
asked Oct 23, 2015 at 4:12
math.stackexchange.com
8
votes
Can I show $\sum_{i=1}^n 1/{i^2} \le 2$ without calculus?
calculus
number-theory
elementary-number-theory
inequality
contest-math
asked Nov 21, 2015 at 5:49
math.stackexchange.com
6
votes
Olympiad inequality problem with $a+b+c+abc=4$
inequality
contest-math
asked Oct 16, 2015 at 17:11
math.stackexchange.com
5
votes
Can a circle be divided into congruent shapes with one not sharing a point with circumferences?
combinatorics
geometry
asked Jan 4, 2017 at 6:34
math.stackexchange.com
5
votes
Olympiad problem about finding minimum value with $x^2y^2+y^2z^2+z^2x^2\ge x^2y^2z^2$
inequality
contest-math
asked Oct 26, 2015 at 15:34
math.stackexchange.com
Top Answers
No answers with score of 5 or more