2013 NJC P2 Q6 [Modified]
Find the number of ways in which the letters of the word STATISTICS can be arranged if
(i)
the $3$ S’s are all not together,
(ii)
the consonants (C, S, T) are not all together,
(iii)
all the vowels (A, I) cannot be next to one another.
How many ways can $4$ letters be selected from the letters of the word STATISTICS (order in which the letters are selected is not important)?
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