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Class 11 Mathematics Permutations and Combinations Factorial notationHard

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Find the value of ( \frac{12!-11!}{10!} ).

Answer and explanation

Correct answer: (121)

(12!-11!=11!(12-1)) and ( \frac{11!}{10!}=11 ), so the value is (121). Always take a common factor in subtraction.

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

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