Question

4 friends are choosing from 8 different drinks at a freshment stand. What is the probability that at least 2 if the friends order the same drink?

Answer 1

assumption:

drinks are selected with replacement from refreshment stand

note:

i think "choosing" is poorly worded in the problem

use complement of everyone selecting a unique drink:

1-(8*7*6*5)/8^4 = 151/256 = 0.5898

answer -> D 0.59