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.
6 balls are marked with numbers 1 to 6. If two balls are picked out
[#permalink]
11 Nov 2024, 00:49
11 Nov 2024, 00:49
Expert Reply
00:00
Question Stats:
66% (02:17) correct
33% (02:28) wrong based on 3 sessions
Hide Show timer Statistics
6 balls are marked with numbers 1 to 6. If two balls are picked out of these 6 balls, what is the probability that the sum of the numbers on the balls is 8?
A. 1/15
B. 2/15
C. 1/5
D. 4/15
E. 1/3
A. 1/15
B. 2/15
C. 1/5
D. 4/15
E. 1/3
- Part of the project: GRE Quant & Verbal ADVANCED Daily Challenge 2024 Edition - Gain 20 Kudos & Get FREE Access to GRE Prep Club TESTS
- Also replying to the unanswered questions
Re: 6 balls are marked with numbers 1 to 6. If two balls are picked out
[#permalink]
11 Nov 2024, 12:40
11 Nov 2024, 12:40
Carcass, can you please share a solution to this question?
Re: 6 balls are marked with numbers 1 to 6. If two balls are picked out
[#permalink]
11 Nov 2024, 13:43
11 Nov 2024, 13:43
Expert Reply
Please see our theory about probability.
This a very basic problem where you do not even need to take the total way two balls can be picked up even though I will show nonetheless
6 balls and two picked up So the total ways are
6*5/2=15
Only two combinations are possible to have 8 {2,6} and {3,5}
So the probability is 2/15 or B
But even if you take only the two way to add up to 8 which are 2 the only answer that contains 2 is B
I hope this helps
This a very basic problem where you do not even need to take the total way two balls can be picked up even though I will show nonetheless
6 balls and two picked up So the total ways are
6*5/2=15
Only two combinations are possible to have 8 {2,6} and {3,5}
So the probability is 2/15 or B
But even if you take only the two way to add up to 8 which are 2 the only answer that contains 2 is B
I hope this helps
