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Class 11 Mathematics Permutations and Combinations Factorial notationMedium

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How many consecutive factors remain in (\frac{12!}{9!})?

Answer and explanation

Correct answer: (3)

(\frac{12!}{9!}=12\cdot11\cdot10), so three factors remain. Cancel the numerator up to the denominator factorial.

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Factorial Notation Expansion Class 11 Permutations And Combinations Mathematics Class 11 Mcq

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