यदि (^{n}P_3=n(n-1)(n-2)) है तो \(^{n}C_3\) क्या होगा?
If (^{n}P_3=n(n-1)(n-2)), what is \(^{n}C_3\)?
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Correct Answer
B. (\frac{n(n-1)(n-2)}{3!})
Concept
To get combinations (3!) arrangements are removed. In exams divide ordered triples by (3!) to get unordered triples.
Why this answer is correct
The correct answer is B. (\frac{n(n-1)(n-2)}{3!}). To get combinations (3!) arrangements are removed. In exams divide ordered triples by (3!) to get unordered triples.
Exam Tip
Combination पाने के लिए (3!) arrangements हटाए जाते हैं। परीक्षा में ordered triple से unordered triple में divide by (3!) करें।
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