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Permutation and Combination
by prity kumari - Friday, 3 April 2015, 11:52 PM
  How many 5-digit numbers exist having exactly two 4's in them?
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Re: Permutation and Combination
by g s - Tuesday, 12 May 2015, 03:06 PM
  isn't the ans 83300?
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Re: Permutation and Combination
by Ashok Singh - Tuesday, 26 May 2015, 10:45 AM
  The right answer is 83300. There is a formula for permutation and combination. Do apply it wisely.
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