Question

1234=21
2415=36
3241=25
4521=27
Than
3542?

Answer 1

Answer:

(A+B)*(A-B)=E

(A+B)*(A-B)=E=(3+5)*(4+2)

(A+B)*(A-B)=E=(3+5)*(4+2)=8*6

(A+B)*(A-B)=E=(3+5)*(4+2)=8*6=48