Question

In how many ways can we arrange all the letters of the word RATIONAL if
(1)repetition not allowed
(2)all the vowels occur together
(3)all the vowels do not occur together
(4)no two vowels occur together
(5)vowels occupy odd places
(6)vowels occupy even places
(7)vowels and consonants occupy alternate positions
(8)R is next to I
(9)R comes before I

Plz answer this question..urgently in need

Answer 1

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