A permutation of 5 letters is formed from the letters O, P, Q, R, S, T and U with no

repetitions. How many permutations

a) begin with the letter R?

b) end in a vowel?

c) have the letters Q and U in adjacent positions?

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- November 2nd 2006, 03:22 AMbobby77arrangements
A permutation of 5 letters is formed from the letters O, P, Q, R, S, T and U with no

repetitions. How many permutations

a) begin with the letter R?

b) end in a vowel?

c) have the letters Q and U in adjacent positions? - November 2nd 2006, 05:39 AMCaptainBlack