In a uniformly random permutation of the vowels {a,e,i,o,u}, what is the probability that the first...
In a uniformly random permutation of the vowels {a,e,i,o,u}, what is the probability that the first letter is i and the last letter is o?
Homework Answers
total number of arrangements of 5 vowels =5! =120
number of arrangements where first letter is i and the last letter is o =3! =6 (since only need to arrange middle 3 letters)
therefore probabiltiy =6/120 =1/20
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