In how many ways can 3 prefects be chosen out of 8 prefects?
-
A.
6 -
B.
24 -
C.
56 -
D.
336
Correct Answer: Option C
Explanation
= (^{8}C_{3} = frac{8!}{(8 – 3)! 3!})
= (frac{8 times 7 times 6}{3 times 2})
= 56 ways
In how many ways can 3 prefects be chosen out of 8 prefects?
= (^{8}C_{3} = frac{8!}{(8 – 3)! 3!})
= (frac{8 times 7 times 6}{3 times 2})
= 56 ways