SOLUTION: An urn contains 7 red marbles, 6 white marbles and 10 blue marbles. A child randomly selects three (without replacement). Find the probability all have the same color. F

Question 1200326: An urn contains 7 red marbles, 6 white marbles and 10 blue marbles. A child randomly selects three (without replacement).
Find the probability all have the same color.

Find the probability that none is white.

Answer by ikleyn(52788) (Show Source): You can put this solution on YOUR website!
.
An urn contains 7 red marbles, 6 white marbles and 10 blue marbles.
A child randomly selects three (without replacement).
(a) Find the probability all have the same color.
(b) Find the probability that none is white.
~~~~~~~~~~~~~~~~~~~

(a)  Total possible triples   =  =  = 1771.


     Triples of the same color  +  +  = 35 + 20 + 120 = 175.


         P(a) =  = 0.09881  (rounded).    ANSWER



(b)  P(b) =  =  =  = 0.3840  (rounded).    ANSWER

Solved.

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