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Exponent of a prime in n! - class-XI

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Multiple Choice

The number of words that can be formed by using the letter of the word "MATHEMATICS", taken all at a time is

  1. $11!$
  2. $\dfrac{11!}{2!+2!+2!}$
  3. $\dfrac{11!}{(2!)^{3}}$
  4. none of these
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