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InterviewSolution
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The number of the words that can be formed using all the letters of the word BRAIN such that it starts with R and but does not end with A.A. 18B. 14C. 16D. 20 |
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Answer» Since the first place of the word always starts with R. and last place is not A. the last place can be filled by any one of the remaining three letters. The remaining 3 places can be filled with 3 letters in 3! Ways. `therefore` The total number of words=`3xx3! =18`. |
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