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The probability in a random arrangement of the letters of the word 'ALLAHABAD', both L are not together is |
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Answer» Answer: Considering both L TOGETHER and treating them as one letter we have 8 letters out of which A repeats 4 times and OTHERS are distinct. These 8 letters can be ARRANGED in 4! 8!
ways. So, the NUMBER of words in which both L come together 4! 8!
=1680. Hence, the number of words in which both L do not come together = Total number of words -Number of words in which both L come together =7560−1680 =5880 |
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