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Nice Math Problems

and some nice solutions too!

Russell Lim in Nice Math Problems

A Tricky Complex Numbers Proof

But easy when you know how!

Draw a square in the complex…

Russell Lim in Nice Math Problems

Yes High School Math in China is Hard!🧨

Here is the final problem from the 2024 Gao Kao Math Paper

Russell Lim in Nice Math Problems

A² + B² + C² = D²: in a right-angled tetrahedron the sum of squares of areas of three sides meeting at the right angle is the sum of the square of the area of the remaining side

Pythagoras Would Have Loved This Pyramid Theorem! 🥰

A pyramid is constructed by gluing together three…

Russell Lim in Nice Math Problems

Slicing a Cube With 8 Planes

is not so simple to visualize!

Russell Lim in Nice Math Problems

Can You Tell the Time on This Clock?

This clock is ambiguous — or is it?

Russell Lim in Nice Math Problems

A Nice Factorial Equation from the 2024 Australian Mathematical Olympiad

Solve m! + k! = k! × n! for…

Russell Lim in Nice Math Problems

Round Table Meetings and the Lemma that is NOT Burnside’s

A Fun and Practical Application of Group Theory

Russell Lim in Nice Math Problems

AMC 10B Question 20: 4 congruent semi-circles on a sphere

Closed Curve on a Sphere

My favourite 💖 problem from the 2023 AMC 10

Russell Lim in Nice Math Problems

Remove All Rectangles from a Square Grid

2023 China Girls Math Olympiad — Problem 2

Russell Lim in Nice Math Problems

Find All Positive Integer Solutions

2023 China Girls Mathematics Olympiad — Problem 1

Nice Math Problems

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