Problem
First name
Maddy and Grace
School
Stephen Perse Foundation
Country
Age
13
Email address
002661@stephenperse.com
a X b + 1 = (a + 1) X (a + 1)
b = a + 2
2 X 4 + 1 = 9
4 X 6 + 1 = 25
5 X 7 + 1 = 36
9 X 11 + 1 = 100
10 X 12 + 1 = 121
20 X 22 + 1 = 441