GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Into empty Jar X, Jen places two black marbles and three white marbles
[#permalink]
09 Jun 2021, 00:15
09 Jun 2021, 00:15
Expert Reply
1
Bookmarks
00:00
Question Stats:
93% (01:21) correct
6% (01:22) wrong based on 48 sessions
Hide Show timer Statistics
Into empty Jar X, Jen places two black marbles and three white marbles.
Into empty Jar Y, she places five black marbles and four white marbles.
She then draws one marble at random from each jar.
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Into empty Jar Y, she places five black marbles and four white marbles.
She then draws one marble at random from each jar.
Quantity A |
Quantity B |
The probability that both marbles drawn are black |
The probability that both marbles drawn are white |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Into empty Jar X, Jen places two black marbles and three white marbles
[#permalink]
09 Jun 2021, 05:02
09 Jun 2021, 05:02
Carcass wrote:
Into empty Jar X, Jen places two black marbles and three white marbles.
Into empty Jar Y, she places five black marbles and four white marbles.
She then draws one marble at random from each jar.
Into empty Jar Y, she places five black marbles and four white marbles.
She then draws one marble at random from each jar.
Quantity A |
Quantity B |
The probability that both marbles drawn are black |
The probability that both marbles drawn are white |
QUANTITY A
P(both marbles are black) = P(marble from Jar X is black AND marble from Jar Y is black)
= P(marble from Jar X is black) x P(marble from Jar Y is black)
= 2/5 x 5/9
= 2/9
QUANTITY B
P(both marbles are white) = P(marble from Jar X is white AND marble from Jar Y is white)
= P(marble from Jar X is white) x P(marble from Jar Y is white)
= 3/5 x 4/9
= 12/45
= 4/15
Since 4/15 > 2/9, the correct answer is B
gmatclubot
Into empty Jar X, Jen places two black marbles and three white marbles [#permalink]
09 Jun 2021, 05:02
Moderators:
