Mathematics

In how many ways can 6 subjects be selected from 10 subjects for an examination

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)