MATHEMATICS

JAMB 2012 - Question 21

Mathematics 2012 JAMB Past Questions - Question 21: The binary operation * is defined on the set of integers such that p*q=pq+p-q.Find 2*(3*4)

The binary operation * is defined on the set of integers such that p*q=pq+p-q.Find 2*(3*4)
A:
B:
C:
D:
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Correct Answer

B

Explanation

To find 2*(3*4) using the binary operation *, we need to substitute the values of p = 2, q = 3, and r = 4 into the given definition of the operation.First, let's evaluate 3*4:3*4 = 3*4 + 3 - 4 = 12 + 3 - 4 = 11Now, let's substitute the value of q = 11 into 2*(3*4):2*(3*4) = 2*(11) + 2 - 11 = 22 + 2 - 11 = 13Therefore, 2*(3*4) equals 13 using the given binary operation *.