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A bag contains 3 red, 2 blue, and 7 white marbles. If a marb

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GMAT Club Legend
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Joined: 07 Jun 2014
Posts: 4704
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 90

Kudos [?]: 1600 [0], given: 373

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A bag contains 3 red, 2 blue, and 7 white marbles. If a marb [#permalink] New post 05 Aug 2018, 14:25
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Question Stats:

100% (00:06) correct 0% (00:00) wrong based on 3 sessions
A bag contains 3 red, 2 blue, and 7 white marbles. If a marble is randomly chosen from the bag, what is the probability that it is not blue?

Give your answer as a fraction.

[Reveal] Spoiler: OA
\(\frac{5}{6}\)

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Sandy
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GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4704
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 90

Kudos [?]: 1600 [0], given: 373

CAT Tests
Re: A bag contains 3 red, 2 blue, and 7 white marbles. If a marb [#permalink] New post 07 Aug 2018, 06:14
Expert's post
Explanation

In the bag of marbles, there are 3 red marbles and 7 white marbles, for a total of 10 marbles that are not blue. There are a total of 3 + 7 + 2 = 12 marbles in the bag.

Since probability is defined as the number of desired items divided by the total number of choices, the probability that the marble chosen is not blue is \(\frac{10}{12}=\frac{5}{6}\).
_________________

Sandy
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Re: A bag contains 3 red, 2 blue, and 7 white marbles. If a marb   [#permalink] 07 Aug 2018, 06:14
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