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Class 11 Mathematics Permutations and Combinations Factorial notationHard

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What is the value of ( \frac{9!}{4!\cdot5!}+\frac{9!}{3!\cdot6!} )?

Answer and explanation

Correct answer: (168)

The two terms are (126) and (84), so the sum is (210); the correct option should be (210). Always verify the option after calculation.

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

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