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06 Dec 2021, 06:15
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
18% (02:32) correct
82%
(01:54)
wrong
based on 51
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6 balls are randomly selected from a bag having a large number of red and black balls in equal proportion. If at least two balls of each color were obtained, what is the probability to get an equal number of red and black balls?
(A) 1/3
(B) 2/5
(C) 1/2
(D) 3/8
(E) 4/7
Are You Up For the Challenge: 700 Level Questions
(A) 1/3
(B) 2/5
(C) 1/2
(D) 3/8
(E) 4/7
Are You Up For the Challenge: 700 Level Questions
10 Dec 2021, 23:49
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I think C is the answer.
2 of each colour are already selected which means we only have to select 1 more of each colour.
Ans 2C1*(1/2)*(1/2)=1/2
2 of each colour are already selected which means we only have to select 1 more of each colour.
Ans 2C1*(1/2)*(1/2)=1/2
