8. (a) In how many ways can the 6 letters A, A, B, B, C, C be arranged in a row such that no
two consecutive letters are the same?
(b) In how many ways can the 9 letters A, A, A, B, B, B, C, C, C be arranged in a row such
that
(i) no three consecutive letters are the same?
(ii) no two consecutive letters are the same?
(c) In how many ways can the 9 letters A, A, B, B, B, C, C, C, C be arranged in a row such
that no two consecutive letters are the same?
am point