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In how many ways can the letters of word SPARROW can be arranged so that the vowels are always at first and last positions?1). 602). 723). 1204). 128 |
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Answer» There are two vowels, A and O. They can be ARRANGED in first and LAST positions in 2! WAYS. Remaining 5 letters can be arranged in (5!/2!) Ways, as R is repeated. ∴ Number of ways = 2! × (5!/2!) = 120 |
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