Problem
First name
AidanToal
School
Teddington school
Country
Age
11
-1,1,3,5,10
to get 0 you do -1+1
to get 2 you do -1+3
to get 4 you do -1+5
to get 4 you do 1+3
to get 6 you do 1+5
to get 8 you do 3+5
to get 9 you do -1+10
to get 11 you do 1+10
to get 13 you do 10+3
to get 15 you do 10+5