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Class 11 Mathematics Permutations and Combinations Factorial notationMedium

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What is the value of (\frac{15!}{13!}-5!)?

Answer and explanation

Correct answer: (90)

(\frac{15!}{13!}=15\cdot14=210) and (5!=120), so the difference is (90). Simplify the factorial ratio first.

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

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