The binary operation * is defined on the set of integers such that p * q = pq + p – q. Find 2 * (3 * 4)

A.
11 
B.
13 
C.
15 
D.
22
Correct Answer: Option B
Explanation
p * q = pq + p – q
First execute for 3 * 4
==> 3(4) + 3 – 4 = 12 + 3 – 4 = 11
Now we execute for 2 * 11
==> 2(11) + 2 – 11 = 22 + 2 – 11 = 13
There is an explanation video available below.