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The binary operation * is defined on the set of integers such that p *...

Mathematics
JAMB 2012
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
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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.

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Explanation Video

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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