CTS Company Numerical Ability Permutation and Combination

In how many ways can at least two team members be selected for grade A out of 7 members in a group?
(a)7C2
(b) 7C2 +7 C3 +7 C4 + 7C5 +7 C6 + 7C7
(c)7P2 +7 P3 + 7P4 +7 P5 + 7P6 + 7P7
(d) 7C0 +7C1
(e)7P0 + 7P1

Read Solution (Total 2)

option (B) is correct.

Bcz we are making selections so we need Combinations and it is said we have to select at least 2, so It can be at least 2 or more than 2 i.e. till 7.
8 years agoHelpfull: Yes(13) No(1)