Solution

36010

Problem
1 Step 2 Step Back to problem
First name
Luke Cutts
School
Spalding grammar school
Country
England
Age
11

Imagine you do how many ways you can do it for one step then two steps then add them together. You keep adding them. Example: 1+2=3, 5+8=13 etc. When I did number twelve and I'd added the two previous ones then there is you answer (233).