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Class 11 Mathematics Permutations and Combinations Factorial notationHard

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What is the value of ( \frac{13!}{10!\cdot3!}-\frac{12!}{9!\cdot3!} )?

Answer and explanation

Correct answer: (66)

The first term is (286) and the second is (220), so the difference is (66). In such questions, write each term value and subtract.

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

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