SOLUTION: A certain jar consists of seven green marbles, five black and four red marbles. If three marbles are drawn at random, find the probability that all three marbles are the same col

Algebra ->  Probability-and-statistics -> SOLUTION: A certain jar consists of seven green marbles, five black and four red marbles. If three marbles are drawn at random, find the probability that all three marbles are the same col      Log On


   

Question 539633: A certain jar consists of seven green marbles, five black and four red marbles. If three marbles are drawn at random, find the probability that all three marbles are the same color.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A certain jar consists of seven green marbles, five black and four red marbles. If three marbles are drawn at random, find the probability that all three marbles are the same color.
----
# of ways to succeed: 7C3 + 5C3 + 4C3 = 35+10+4 = 49
----
# of random sets of 3: 16C3 = 560
--
P(3 same color) = 49/560 = 0.0875
====================================
Cheers,
Stan H.
===============