List questions from contest-math

Published on 10 Mar 2019 - 16:30

103

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Find an integer in the range $100\leq n \leq 1997$ such that $\frac{2^n+2}{n}$ is an integer.

Published on 10 Mar 2019 - 20:46

107

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Competition involving $2^n$ players

Published on 11 Mar 2019 - 15:38

315

Views

Geometry high school math competition question

Published on 29 Mar 2026 - 13:21

94

Views

Square with the minimum possible area that satisfy the given conditions

Published on 13 Mar 2019 - 15:50

142

Views

Kepler's books: Mysterium Cosmographicum, Astronomia Nova, and Harmonices Mundi

Published on 25 Mar 2026 - 6:31

6.7k

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Examples of the Pigeonhole Principle

Published on 25 Mar 2026 - 21:49

1.3k

Views

Non constant geometric sequence problem?

Published on 25 Mar 2026 - 14:28

52

Views

Minimizing the Amount of Distance to Move the Vertex of a Scalene Triangle in order to turn it into a Right Triangle?

Published on 15 Mar 2019 - 22:19

432

Views

Find the maximum of the quadratic $\sum\limits_{1\le i<j\le n}\min\{(i-j)^2,(n+i-j)^2\}a_ia_j .$

Published on 16 Mar 2019 - 12:15

53

Views

Solving an equation with radicals in the exponent

Published on 16 Mar 2019 - 19:02

51

Views

Inequality with minimal k

Published on 17 Mar 2019 - 7:25

189

Views

Where can I find an Iranian test answer?

Published on 17 Mar 2019 - 11:06

191

Views

Combinatorics question from IMO 2012

Published on 17 Mar 2019 - 13:08

123

Views

How to construct a normal to side $AB$ of acute triangle so that it halves it area?

Published on 26 Mar 2026 - 1:10

List Question

Counting of natural numbers that have certain properties

Find an integer in the range $100\leq n \leq 1997$ such that $\frac{2^n+2}{n}$ is an integer.

Competition involving $2^n$ players

Geometry high school math competition question

Square with the minimum possible area that satisfy the given conditions

Kepler's books: Mysterium Cosmographicum, Astronomia Nova, and Harmonices Mundi

Examples of the Pigeonhole Principle

Non constant geometric sequence problem?

Minimizing the Amount of Distance to Move the Vertex of a Scalene Triangle in order to turn it into a Right Triangle?

Find the maximum of the quadratic $\sum\limits_{1\le i<j\le n}\min\{(i-j)^2,(n+i-j)^2\}a_ia_j .$

Solving an equation with radicals in the exponent

Inequality with minimal k

Where can I find an Iranian test answer?

Combinatorics question from IMO 2012

How to construct a normal to side $AB$ of acute triangle so that it halves it area?

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