If 2+3=25, 4+5=45, 0+8=40 then 1+6=??

Answer 1

Answer: 35.

Key: a+ b = 5 (a + b)

2 + 3 = 5 * (2 + 3) = 25.

4 + 5 = 5 * (4 + 5) = 45.

0 + 8 = 5 * (0 + 8) = 40.

Similarly,

1 + 6 = 5 * (1 + 6) = 35.

Answer 2

Z(x.y)=5(x+y)
Z(1,6)=35