Question
Question: Mr. X has 10 friends. He wants to host as many parties as possible by inviting same number to each p...
Mr. X has 10 friends. He wants to host as many parties as possible by inviting same number to each party. Then the no. of parties that can be hosted is
A
210
B
29
C
10C4
D
10C5
Answer
10C5
Explanation
Solution
He has to invite 5 friends to each party.
∴ No. of parties = 10C5.