List questions from contest-math

Published on 31 Mar 2026 - 14:51

418

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Number of legal paths on a grid?

Published on 16 Apr 2026 - 15:40

255

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IMO/1981 - Combinatorics

Published on 07 May 2026 - 7:14

839

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Concyclic points on a circle

Published on 15 Apr 2026 - 21:21

1.1k

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Soft Question: Resources to learn Olympiad Combinatorics

Published on 10 May 2026 - 14:04

259

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Clock rotation (AMC 10 #14 2015)

Published on 10 May 2026 - 19:07

57

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Expressions that equate to a square

Published on 10 May 2026 - 12:52

199

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Medium difficulty combinatorics problem with strange answer

Published on 11 Apr 2026 - 22:55

85

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Prove that there exists no maximum for the following?

Published on 13 Apr 2026 - 4:14

130

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The 4 digit base $6$ number $abcd$ with $a>0$ and $d$ odd is a perfect square.

Published on 17 Apr 2026 - 5:44

167

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$\sum a=8$, $\sum ab=12$ where $a,b,c,d\in\mathbb{R}$. Find the maximum value of $d$.

Published on 10 May 2026 - 13:50

369

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Find which of the following function crosses the x-axis?

Published on 16 Apr 2026 - 2:43

61

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What is the total of all the possible final scores that cannot be achieved in this game?

Published on 12 Apr 2026 - 18:06

2.8k

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A rhombus is inscribed in triangle ABC

Published on 10 May 2026 - 19:04

187

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Problem concerning the use of Pigeonhole (Box) principle

Published on 10 May 2026 - 11:20

List Question

Number of subsets with subscripts being a multiple of each other?

Number of legal paths on a grid?

IMO/1981 - Combinatorics

Concyclic points on a circle

Soft Question: Resources to learn Olympiad Combinatorics

Clock rotation (AMC 10 #14 2015)

Expressions that equate to a square

Medium difficulty combinatorics problem with strange answer

Prove that there exists no maximum for the following?

The 4 digit base $6$ number $abcd$ with $a>0$ and $d$ odd is a perfect square.

$\sum a=8$, $\sum ab=12$ where $a,b,c,d\in\mathbb{R}$. Find the maximum value of $d$.

Find which of the following function crosses the x-axis?

What is the total of all the possible final scores that cannot be achieved in this game?

A rhombus is inscribed in triangle ABC

Problem concerning the use of Pigeonhole (Box) principle

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