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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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?
If the first letter is an R, the second can be any of the remaining 6,Quote:
Originally Posted by bobby77
the third any of the now remaining 5, the fourth any of the now remaining 4,
and the fifth any of the now remaining 3, for a total of: 6x5x4x3=360.
RonL