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Liz owns 2 green t-shirts, 4 blue t-shirts, and 5 red t-shir

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GRE Prep Club Legend
GRE Prep Club Legend
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Joined: 07 Jun 2014
Posts: 4810
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 117

Kudos [?]: 1895 [0], given: 397

Liz owns 2 green t-shirts, 4 blue t-shirts, and 5 red t-shir [#permalink] New post 22 Nov 2017, 18:53
Expert's post
00:00

Question Stats:

88% (00:30) correct 12% (00:38) wrong based on 25 sessions
Liz owns 2 green t-shirts, 4 blue t-shirts, and 5 red t-shirts

Quantity A
Quantity B
The probability that Liz randomly selects a blue t-shirt
\(\frac{2}{5}\)


A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.

Drill 1
Question: 5
Page: 521-522
[Reveal] Spoiler: OA

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Sandy
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GRE Prep Club Legend
GRE Prep Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4810
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 117

Kudos [?]: 1895 [0], given: 397

Re: Liz owns 2 green t-shirts, 4 blue t-shirts, and 5 red t-shir [#permalink] New post 10 Dec 2017, 13:10
Expert's post
Explanation

To calculate the probability, divide the part by the whole: \(\frac{blue_shirts}{total_shirts}=\frac{4}{11}\).
Choice (B) is correct because \(\frac{4}{11} < \frac{4}{10}\) (which is simply \(\frac{2}{5}\) multiplied by 2).

Hence option B is correct!
_________________

Sandy
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1 KUDOS received
Manager
Manager
Joined: 22 Feb 2018
Posts: 163
Followers: 2

Kudos [?]: 114 [1] , given: 22

Re: Liz owns 2 green t-shirts, 4 blue t-shirts, and 5 red t-shir [#permalink] New post 25 Dec 2018, 15:07
1
This post received
KUDOS
Answer: B
2 green T-shirts, 4 blue, 5 red
A: The probability that Liz randomly select a blue t-shird = 4C1 / 11C1 = 4/11
B: 2/5
B is bigger than A
_________________

Follow your heart

Re: Liz owns 2 green t-shirts, 4 blue t-shirts, and 5 red t-shir   [#permalink] 25 Dec 2018, 15:07
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Liz owns 2 green t-shirts, 4 blue t-shirts, and 5 red t-shir

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