Question

Find the probability that:At least one blue ball is drawn

Answer 1

You can find the probability of; no blue balls drawn and and then subtract p(no blue) from 1

P(no blue) = 2/3 * 2/4 * 2/5 = 8/60

P(no blue) = 4/30

P(at least 1 blue) =

`=1-(4)/(30)`
`=(30-4)/(30)`
`=(26)/(30)`
`=(13)/(15)`