First name
Charlie
School
Knutsford Academy
Country
Age
0
1) 31+32+33+34=130
2) -8 + -9 + -10 + -11=-38
3) (a+d) - (b+c) in consecutive numbers always equals 0 as a+d=b+c
4) a+b+c-d will always equal 2a
e.g 31+32+33-34=62 62=31x2