An urn contains 3 green balls, 2 blue balls, and 4 red balls. in a random sample of 5 balls, find the probability that both blue ba ls and at least I red ball are selected.

An urn consists of 3 green balls, 4 blue balls, and 6 red balls. In a random sample of 5 balls, find the probability that 2 blue balls and at least 1 red ball are selected. The probability that 2 blue balls and at least 1 red ball are selected is (Round to four decimal places as needed.)

Find the probability that among 7 randomly chosen guests at a party no two share a birth month.

Suppose a jar contains 15 red marbles and 10 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time (same as drawing without replacement), find the probability that both are red.