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Question

If all permutations of the letters of the word AGAIN are arranged in the order as in a dictionary. What is the 49th word?

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Solution

Solution :-

Given, the letter of the word AGAIN.

Now we will arranged in alphabetically order. AGAIN

starting with 'A' and arranging the other four letters

we have = 4: ways = 24 ways
starting with 'G', arranging the other four letter = 4!2!=12 ways
starting with 'I' we have = 4!2!=12 = 12 ways.

so far we have 24+12+12=48 words

the 49th word will start from N and is NAAGI

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