Mr X will be the Chairman of the committee . In how many ways can a committee of 5 members be chosen from a total of 8 people given that Mr. X must be one them?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
ক (35)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
As, Mr. x is always chosen, then to form a committee of 5 members from the pool of 8, we now have to choose 4 members from 7 people. So, the committee can be formed in
7C4 = 7! / [4!(7 − 4)!]
= 7! / (4! × 3!)
= 5040 / (24 × 6)
= 5040 / 144
= 35
