In a club of 9 members, a sub-committee of 4 members is to be formed. How many different sub-committees can be formed?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 126.
⁹C₄ = (9 × 8 × 7 × 6) / (4 × 3 × 2 × 1)
= 3024 / 24 = 126