Each of the 25 balls in a certain box is either red, blue, : DS Archive
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# Each of the 25 balls in a certain box is either red, blue,

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Each of the 25 balls in a certain box is either red, blue, [#permalink]

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03 Oct 2008, 19:31
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Each of the 25 balls in a certain box is either red, blue, or white and has a number from 1 to 10 painted on it. If one ball is to be selected at random from the box, what is the probability that the ball selected will either be white or have an even number painted on it?

1). The probability that the ball will both be white and have an even number painted on it is 0.

2). The probability that the ball will be white minus the probability that have an eve number painted on it is 0.2
Manager
Joined: 01 Apr 2006
Posts: 183
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Kudos [?]: 97 [0], given: 0

Re: GMATPrep - DS - 25 balls [#permalink]

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03 Oct 2008, 19:32
Here is a question I have off the bat... can we make any assumptions on if the numbers on the balls (1-10) could potentially repeat in the set of 25 balls?
Re: GMATPrep - DS - 25 balls   [#permalink] 03 Oct 2008, 19:32
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