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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
61% (01:43) correct
39%
(02:06)
wrong
based on 140
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The probability of rain in any perticluar day is 50% in July 2019. What is the probability that adam will have the chance for a picnic from July 1 to July 5 for exactly 3 days?
A>5/16
B>1/32
C>1/4
D>5/32
E>1/2
A>5/16
B>1/32
C>1/4
D>5/32
E>1/2
24 Sep 2019, 09:32
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J2S2019
Out of 5 days, we have to find probability that it rains exactly 2 days with P(rain) = P(No rain) = 1/2
This question is similar to coins question: To find the Probability of getting exactly 2 heads when a fair coin is tossed 5 times
= \(5C2*(1/2)^2*(1/2)^{5-2}\)
= \(5C2*(1/2)^5\)
= 10/32
= 5/16
IMO Option A
General Discussion
24 Sep 2019, 09:36
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J2S2019
Dear! Answer would be 5/16, but options A and C are the same.!
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