This is the Maths Level Required for Entry to a Top University in India

3 Mathematics Questions from the Indian Institute of Technology Joint Entry Exam (IIT JEE, Advanced)

A Spider-Fly Problem with a Surprising Solution

A Simple* Number Theory Problem from the 2022 Indian National Math Olympiad (INMO)

A Number Theory Challenge from the Harvard-MIT Math Tournament

Kevin writes down the integers 1, 2, . . . , 15 on a…

2021 Shanghai High School Math Exam — Final Question

This is how Chinese students battle for…

A Nice Prime Number Problem from the 2000 Greek Olympiad

Find all primes p such that (1 + p + p² + p³…

2023 and Sums of Squares

Number puzzles to welcome the new year!

Some numbers can be expressed as the sum of squares of two positive integers, while others cannot. The number 2020 can, for example, because 2020 = 16² + 42².

How would YOU approach this AMC Geometry problem?

Method 3 is my favourite 😊

Counting Tigers in the 2022 Alibaba Global Mathematics Competition

A probability question —…

A Classic Probability Problem

Which, surprisingly, can be solved using only middle-school math!

Alice and Bob each select a real number on the interval [0,3], uniformly at random. Assuming their selections are independent, find the…