What number should replace the question mark?
number should replace the question mark : 2
ab cd a+c=b a-c=d 1)8+1=9,8-1=7 2)3+2=5,3-2=1 3)5+2=7,5-2=3 4)4+2=6,4-2=2 so ans is 2
27 28 32 93 54 40 48 64 48 67 84 64 55 50 ?
