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

Assessment: JAMB UTME - Mathematics - 2013 Subject: General Mathematics

Question 1 Report

60

20

5

120

Answer Details

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

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