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Q.11. In how many ways can the letters of the word PERMUTATIONS be arranged if the
(i) words start with P and end with S?
Answers (1)
There are 2 T's in word PERMUTATIONS, all other letters appear at once only.
If words start with P and ending with S i.e. P and S are fixed, then 10 letters are left.
The required number of arrangements are
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