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Nice Math Problems
and some nice solutions too!
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Simple Sequence Stumps the World’s Best (IMO 2024 Problem 3)
Simple Sequence Stumps the World’s Best (IMO 2024 Problem 3)
Here’s a nice way to understand it 🥰
Russell Lim
Aug 5
IMO 2024 Problem 1 — “Explain it Like I’m 12”
IMO 2024 Problem 1 — “Explain it Like I’m 12”
An Olympiad Algebra problem explained with only 7th Grade Algebra …
Russell Lim
Jul 23
IMO 2024 — USA Wins! China 2nd, Korea 3rd.
IMO 2024 — USA Wins! China 2nd, Korea 3rd.
Plus a Fairytale 4th Place for India
Russell Lim
Jul 20
A Tricky Complex Numbers Proof
A Tricky Complex Numbers Proof
But easy when you know how!
Russell Lim
Jul 3
Yes High School Math in China is Hard!🧨
Yes High School Math in China is Hard!🧨
Here is the final problem from the 2024 Gao Kao Math Paper
Russell Lim
Jun 13
Pythagoras Would Have Loved This Pyramid Theorem! 🥰
Pythagoras Would Have Loved This Pyramid Theorem! 🥰
A pyramid is constructed by gluing together three right triangles with areas A, B, and C, so that the hypotenuses form a triangular base of…
Russell Lim
Jun 6
Slicing a Cube With 8 Planes
Slicing a Cube With 8 Planes
is *not* so simple to visualize!
Russell Lim
May 18
Can You Tell the Time on This Clock?
Can You Tell the Time on This Clock?
This clock is ambiguous — or is it?
Russell Lim
Apr 26
A Nice Factorial Equation from the 2024 Australian Mathematical Olympiad
A Nice Factorial Equation from the 2024 Australian Mathematical Olympiad
Solve m! + k! = k! × n! for positive integers (k, m, n)
Russell Lim
Apr 11
Round Table Meetings and the Lemma that is NOT Burnside’s
Round Table Meetings and the Lemma that is NOT Burnside’s
A Fun and Practical Application of Group Theory
Russell Lim
Mar 26
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