In how many ways can a committee of 5 be selected from 8 students if
FURTHER MATHEMATICS
WAEC 2015
In how many ways can a committee of 5 be selected from 8 students if 2 particular students are to be included?
- A. 20
- B. 28
- C. 54
- D. 58
Correct Answer: A. 20
Explanation
Since 2 students must be included, we have to arrange the remaining 3 students from the 6 students left
= \(^{6}C_{3} = \frac{6!}{(6-3)!3!}\)
= 20 ways
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