You may also like

problem icon

2-digit Square

A 2-Digit number is squared. When this 2-digit number is reversed and squared, the difference between the squares is also a square. What is the 2-digit number?

problem icon

Consecutive Squares

The squares of any 8 consecutive numbers can be arranged into two sets of four numbers with the same sum. True of false?

problem icon

Plus Minus

Can you explain the surprising results Jo found when she calculated the difference between square numbers?

Thousands of X

Age 14 to 16 Short Challenge Level:


Solve the equation $(x-2013)(x-2012)-(x-2012)(x-2011)=0.$



This problem is adapted from the World Mathematics Championships

You can find more short problems, arranged by curriculum topic, in our short problems collection.