Question

if 32*41=15 , 51*34=47, 41*52=37, 87*53=?

Answer 1

18  is the answer ....

Answer 2

your answer is 18

the trick behind this question is
32*41 =15
3-2*4+1
1*5
15

similarly
87*53
8-7*5+3
1*8
18

thanks hope it helps