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In how many ways can 3 seats be occupied if 5 people are willing to...

Mathematics
JAMB 2013

In how many ways can 3 seats be occupied if 5 people are willing to sit?
  • A. 60
  • B. 20
  • C. 5
  • D. 120
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Correct Answer: Option A
Explanation
5 people can take 3 places in;

5P3 ways, = \(\frac{5!}{(5 - 3)!}\) = \(\frac{5!}{2!}\)

= \(\frac{5 \times 4 \times 3 \times 2!}{2!}\)

= 5 x 4 x 3

= 60 ways

There is an explanation video available below.


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Explanation Video

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