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# A jar contains 16 marbles, of which 4 are red, 3 are blue,

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Manager
Joined: 10 Oct 2008
Posts: 56
A jar contains 16 marbles, of which 4 are red, 3 are blue, [#permalink]

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11 Dec 2008, 19:26
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A jar contains 16 marbles, of which 4 are red, 3 are blue, and the rest are yellow. If 2 marbles are to be selected at random from the jar, one at a time without being replaced, what is the probability that the first marble selected will be red and the second marble selected will be blue?

A. 3/64
B. 1/20
C. 1/16
D. 1/12
E. 1/8
Manager
Joined: 27 May 2008
Posts: 199

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11 Dec 2008, 20:48
Agreed with B

probablity of picking Red - 4/16
probablity of picking blue - 3/15 (since no replacement)

so 1/20
Re: jar   [#permalink] 11 Dec 2008, 20:48
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# A jar contains 16 marbles, of which 4 are red, 3 are blue,

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