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In how many ways can 3 prefects be chosen out of 8 prefects?

Further Mathematics
WAEC 2011

In how many ways can 3 prefects be chosen out of 8 prefects?

  • A. 6
  • B. 24
  • C. 56
  • D. 336
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Correct Answer: Option C
Explanation

= \(^{8}C_{3} = \frac{8!}{(8 - 3)! 3!}\)

= \(\frac{8 \times 7 \times 6}{3 \times 2}\)

= 56 ways


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