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
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
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
Source: Myschool Past Questions Archive (Record #27330)