English

Which of the Following Are True:(2 +3)! = 2! + 3!

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Question

Which of the following are true:

(2 +3)! = 2! + 3!

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Solution

LHS = (2 +3)!
              = 5!
              = 120
    RHS = 2! + 3!
             = 2 + 6
             = 8
   Since  LHS ≠ RHS,
      Thus, (i) is false.

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Chapter 16: Permutations - Exercise 16.1 [Page 4]

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R.D. Sharma Mathematics [English] Class 11
Chapter 16 Permutations
Exercise 16.1 | Q 5.1 | Page 4

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