Solution

26149

Problem
Square subtraction Back to problem
First name
Jack Stallard
School
Collis
Country
England
Age
11

Whatever number you start with it will always be an even number in the end eg.

82000 x 82000 = 6724000000

Then you take away your starting number

6724000000 - 82000 = 6723918000

Which is an even number

Another example : 8 x 8 = 64

Then you take away the starting number 64 - 8 = 56

Which is an even number so whatever you do it will always be even!