Been stuck on a problem with probability. Question goes as follows: Three balls are drawn at random without replacement from a box containing 8 white, 4 black and 4 red balls. Calculate the probabilities that there will be: i) at least one white ball ii) two white balls and once black ball...

I have the following problem that I am stuck on: A piece of string is cut in two at a point selected at random. Find the probability that the longer piece is at least x times longer than the shorter piece (x is greater than or equal to 1)

urn 1 contains 3 red balls and 3 black balls. Urn 2 contains 2 red balls and 2 black balls. Urn 3 contains 3 red balls and 3 black balls. If an urn is selected at random and a ball is drawn, find the probability that it will be red p(red)=

In a bag there are 13 red candies, 13 green candies 13 yellow candies and 13 blue candies. If I pick 1 candy from the bag what is the probability that it will not be blue?

hello, I am doing this probability and got stuck with it. I am not sure where to start with, so if you think there is a way, please help me Do I need a combination here? A four-engined aircraft can fly safely on two engines; a three-engined aircraft can fly safely on one. On a particular...