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In a class there are two batches; A and B. Batch A has 2 couples and 3
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21 Aug 2023, 22:41
21 Aug 2023, 22:41
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In a class there are two batches; A and B. Batch A has 2 couples and 3 singles and batch B has 3 couples and 2 singles. If two people are randomly selected from the class, what is the probability that a couple is selected?
A. 1/21
B. 2/21
C. 2/15
D. 4/15
E. 6/15
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A. 1/21
B. 2/21
C. 2/15
D. 4/15
E. 6/15
Post A Detailed Correct Solution For The Above Questions And Get Kudos.
Question From Our Project: Free GRE Prep Club Tests in Exchange for 20 Kudos
\(\Longrightarrow\) GRE - Quant Daily Topic-wise Challenge
\(\Longrightarrow\) GRE Math Essentials - A most comprehensive handout!!
\(\Longrightarrow\) ALL the GRE Quant and Verbal Practice Directories in ONE place (2023)
\(\Longrightarrow\) Best GRE Test Books of 2023
Re: In a class there are two batches; A and B. Batch A has 2 couples and 3
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11 Sep 2023, 05:20
11 Sep 2023, 05:20
1
(2C1 + 3C1)/15C2
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Posted from my mobile device
Re: In a class there are two batches; A and B. Batch A has 2 couples and 3
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15 Sep 2023, 14:48
15 Sep 2023, 14:48
1
Not sure, but this is the logic I've got so far:
Batch A: 2 couples and 3 singles = 7 people total
Batch B: 3 couples an 2 singles = 8 people total
8+7 = 15 people total
To pick a person in a couple it's a 10/15
To pick the other person in the couple, it's 1/14
10/15 * 1/14 = 1/21
Choice A
Batch A: 2 couples and 3 singles = 7 people total
Batch B: 3 couples an 2 singles = 8 people total
8+7 = 15 people total
To pick a person in a couple it's a 10/15
To pick the other person in the couple, it's 1/14
10/15 * 1/14 = 1/21
Choice A
