17. Find the number of permutations of the letters of the word ENCLISH – InterviewSolution

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17. Find the number of permutations of the letters of the word ENCLISHthe word 'ENCLISH.Hw. Howmany of these begin with E and end with I?

Answer»

if we fix E and Ithen there are left 5 letters in betweenand these can be arranged in 5! wayshence answer is 5!

thank you so much

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