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.
A = {3, 4, 5, 6} B = {3, 4, 5, 6, 7} Two integers will be randomly se
[#permalink]
06 Sep 2022, 16:21
06 Sep 2022, 16:21
Expert Reply
1
Bookmarks
00:00
Question Stats:
83% (01:27) correct
16% (01:47) wrong based on 12 sessions
Hide Show timer Statistics
A = {3, 4, 5, 6}
B = {3, 4, 5, 6, 7}
Two integers will be randomly selected from the sets above, one integer from set A and one integer from set B. What is the probability that the sum of the two integers will equal 10?
(A) 0.15
(B) 0.20
(C) 0.25
(D) 0.30
(E) 0.40
B = {3, 4, 5, 6, 7}
Two integers will be randomly selected from the sets above, one integer from set A and one integer from set B. What is the probability that the sum of the two integers will equal 10?
(A) 0.15
(B) 0.20
(C) 0.25
(D) 0.30
(E) 0.40
Part of the project: GRE QCQ & PS 3 Questions Every One DAILY Challenge - (2022) - Gain 20 Kudos & Get FREE Access to GRE Prep Club TESTS
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials (2022)
GRE Geometry Formulas
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials (2022)
GRE Geometry Formulas
GRE - Math Book
Re: A = {3, 4, 5, 6} B = {3, 4, 5, 6, 7} Two integers will be randomly se
[#permalink]
10 Sep 2022, 21:14
10 Sep 2022, 21:14
1
These are the following ways of making a sum of 10:
(3,7), (4,6), (5,5), (6,4). Each of the pairs has two elements: the first from Set A and the second from Set B.
Answer is: P(Choosing first element from Set A)/P(Choosing second element from Set A) * 4 (multiplying by four because there are four sets).
This equals: (1/4)*(1/5)*4 = 1/5.
Choice: B
Cheers!
(3,7), (4,6), (5,5), (6,4). Each of the pairs has two elements: the first from Set A and the second from Set B.
Answer is: P(Choosing first element from Set A)/P(Choosing second element from Set A) * 4 (multiplying by four because there are four sets).
This equals: (1/4)*(1/5)*4 = 1/5.
Choice: B
Cheers!
gmatclubot
Re: A = {3, 4, 5, 6} B = {3, 4, 5, 6, 7} Two integers will be randomly se [#permalink]
10 Sep 2022, 21:14
Moderators:
