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04 Jan 2021, 05:01
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
81% (01:03) correct
19%
(01:33)
wrong
based on 63
sessions
History
Date
Time
Result
Not Attempted Yet
A bag contains six marbles: two red, two blue, and two green. If two marbles are drawn at random, what is the probability that they are the same color?
A. 1/3
B. 1/2
C. 1/8
D. 1/4
E. 1/5
A. 1/3
B. 1/2
C. 1/8
D. 1/4
E. 1/5
rocky620
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Location: India
Concentration: General Management, Strategy
Schools: IIMA PGPX'22 IIMB EPGP'22 IIMC PGPEX'22 ISB'22
GMAT 1: 590 Q49 V22
WE:Other (Retail: E-commerce)
04 Jan 2021, 05:30
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Total cases = 6c2 = 15
Favorable Cases = 3c1 (2 marbles in 3 colors each, we need 2 marbles of any one color) = 3
Probability of picking 2 marbles of same color = 3/15 = 1/5
IMO Option E
Favorable Cases = 3c1 (2 marbles in 3 colors each, we need 2 marbles of any one color) = 3
Probability of picking 2 marbles of same color = 3/15 = 1/5
IMO Option E
04 Jan 2021, 06:55
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Given, Red=2, Blue=2 and green= 2
P(R U B U G)= 2C2/6C2 + 2C2/6C2 + 2C2/6C2 = 1/5.
So, I think E.
P(R U B U G)= 2C2/6C2 + 2C2/6C2 + 2C2/6C2 = 1/5.
So, I think E.
