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An easy one for you quants
There are 26 letter in the alphabet, if 5 letters are drawn what is the probability of getting 3 vowels?
An easy one for you quants
QuoteOriginally posted by: conocieurThere are 26 letter in the alphabet, if 5 letters are drawn what is the probability of getting 3 vowels?w/o replacement:(5 choose 3)*(21 choose 2)/(26 choose 5) = 210/6578 = 105/3289w/ replacement:(5 choose 3)(5/26)^3(21/26)^2 = .0464 ish = 1/21.55 ish
Last edited by OMD on March 24th, 2005, 11:00 pm, edited 1 time in total.