1.

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

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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