2012
Mathematics
JAMB
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: 13
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
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 = 13THIS WEEK's
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