2002
Mathematics
JAMB
The binary operation * is defined on the set of integers p and q by p*q = pq + p + q. Find 2 * (3 * 4).
A.
59
B.
19
C.
67
D.
38
Correct Answer: 59
Explanation
p ∗ q =pq + p + q 2 ∗ ( 3 ∗ 4 ) 3 ∗ 4 = 12 + 3 + 4 = 19 2 ∗ 19 = 38 + 2 + 19 = 59
p ∗ q =pq + p + q 2 ∗ ( 3 ∗ 4 ) 3 ∗ 4 = 12 + 3 + 4 = 19 2 ∗ 19 = 38 + 2 + 19 = 59THIS WEEK's
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