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In how many ways can the letter of words " MADAM" be arranged?

Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 Nandu asked over 2 years ago

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Avatar 37a3bd7bc7328f0ead2c0f6f635dddf60615e676e6b4ddf964144012e529de45 Anshuman answered over 2 years ago

The question is that of Permutation and contains repeating Letters in the Word MADAM. The trick is: Step 1: Count the number of Letters you have (Ans : 5) Step 2 : Get its factorial (denoted by "!") in the numerator. Step 3 : Get the Factorial of the repeating letters in the denominator Ans : 5! / ( 2! * 2!) = (5*4*3*2*1)/{(2*1)*(2*1)} = 30 I hope that in spite of answering your question, i have also cracked the small Math of doing permutation. Enjoy, Anshuman Prasad

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