SOLUTION: how many bit strings of seven lowercase letters start with a vowel, if letters cannot be repeated

Algebra ->  Permutations -> SOLUTION: how many bit strings of seven lowercase letters start with a vowel, if letters cannot be repeated      Log On


   



Question 463979: how many bit strings of seven lowercase letters start with a vowel, if letters cannot be repeated
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
26*25*24*23*22*21*20=3315312000 total bit strings.
3315312000 * 5/26 = 637560000 there are 5 vowels.
.
Ed