In how many ways can 6 subjects be selected from 10 subjects for an examination
-
A.
218 -
B.
216 -
C.
215 -
D.
210
Correct Answer: Option D
Explanation
(^{10}C_6 = frac{10!}{(10-6)!6!}=frac{10!}{4!6!}\
=frac{(10times 9times 8times 7 times 6!)}{4times 3times 2times 1times 6!}\
=210)