Combinations
The value of C(10, 3) is
Select the correct option:
Solution
120
- Combination Formula: C(n,r)=(rn)=r!(n−r)!n!.
- Identify Variables: n=10,r=3.
- Setup Fraction:
- 3!×7!10!=3×2×1×7!10×9×8×7!
- Simplify:
- 610×9×8=6720=120.
- Result: 120 selections.
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About This Question
- Subject
- mathematics
- Chapter
- permutations and combinations
- Topic
- combinations
- Difficulty
- Easy
- Year
- 2025
This easy difficulty mathematics question is from the chapter permutations and combinations, covering the topic of combinations. It appeared in the 2025 exam. Practice this and similar questions to strengthen your understanding of permutations and combinations concepts.
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