Question

If a* b = (a + b) + ab, evaluate 6*7*8

Answer 1

if we suppose
a=6 and b=7 In the first step
then according to the condition given
6*7=(6+7)+(6)(7)=55
then in the second step
a=55 and b=8
then
55*8=(55+8)+(55)(8)=503 .. the answer