S is chosen, only if B is chosen for the committee?
Explanation:
Case 1: S is chosen. Since S is chosen B also has to be selected. Now we need to select 5 more people from the remaining 11.
Number of ways = 11C5 = 462.
Case 2: S is not chosen. Now there is no restriction for B. Now we need to select 6 more people from the remaining 12.
Number of ways = 12C6 = 924.
∴ Total number of ways = 462 + 924 = 1386.
Hence, 1386.
» Your doubt will be displayed only after approval.
Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.