Naresh has 10 friends, and he wants to invite 6 of them to a party. How many…
2020
Naresh has 10 friends, and he wants to invite 6 of them to a party. How many times will 3 particular friends never attend the party?
Answer: B. 7 — If the 3 particular friends never attend, Naresh must choose all 6 invitees from the remaining 7 friends. Number of ways = C(7, 6) = 7.
- A.
8
- B.
7
- C.
720
- D.
35
Attempted by 28 students.
Show answer & explanation
Correct answer: B
If the 3 particular friends never attend, Naresh must choose all 6 invitees from the remaining 7 friends.
Number of ways = C(7, 6) = 7.
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