SOLUTION: 3 marbles are drawn at random with no replacement. Find the probability that the 3 marbles are the same color if you have 3 red and 4 blue marble

Question 450340: 3 marbles are drawn at random with no replacement. Find the probability that the 3 marbles are the same color if you have 3 red and 4 blue marble
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
3 marbles are drawn at random with no replacement. Find the probability that the 3 marbles are the same color if you have 3 red and 4 blue marble
------------
P(3red or 3blue) = P(3red)+P(3blue)
= [3C3+4C3]/[7C3]
= [1+4]/35
= 1/7
============================
Cheers,
Stan H.
RELATED QUESTIONS
A box contains 9 red marbles, 8 green marbles, 5 yellow marbles, and 2 blue marbles. If 3 (answered by ewatrrr)

A jar has 7 red marbles, 7 blue marbles and 6 white marbles. I take 3 marbles with no... (answered by Edwin McCravy)

Run has 7 red marbles, 7 blue marbles and 6 white marbles. I take 3 marbles with no... (answered by jim_thompson5910)

A certain jar consists of seven green marbles, five black and four red marbles. If... (answered by stanbon)

Two marbles are drawn from a box containing 3 yellow, 4 white and 8 blue marbles without... (answered by ewatrrr)

a jar contains 13 marbles, 3 red, 4 white, and 6 blue. Two marbles are drawn without... (answered by stanbon)

Urn A contains 5 red marbles and 3 white marbles Urn B contains 2 red marbles and 6... (answered by VFBundy)

Urn A contains 4 red and 3 black marbles. Urn B contains 5 red and 7 black marbles. From... (answered by greenestamps)