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# The probability of event J occurring is 0.63, while the probability th

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Math Expert
Joined: 02 Sep 2009
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The probability of event J occurring is 0.63, while the probability th  [#permalink]

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27 Feb 2019, 04:43
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Question Stats:

45% (01:24) correct 55% (01:02) wrong based on 11 sessions

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The probability of event J occurring is 0.63, while the probability that both events J and K occur is 0.42. What is the probability that event K will occur?

A. 1/6
B. 1/3
C. 1/2
D. 2/3
E. 5/6

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Joined: 31 Dec 2018
Posts: 18
Location: India
The probability of event J occurring is 0.63, while the probability th  [#permalink]

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27 Feb 2019, 04:49
P(JUK)=P(J)+P(K)-P(Both)
1=0.63+x-0.42
1=0.21+x
x=0.79
or 5/6

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Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
The probability of event J occurring is 0.63, while the probability th  [#permalink]

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27 Feb 2019, 05:48
Bunuel wrote:
The probability of event J occurring is 0.63, while the probability that both events J and K occur is 0.42. What is the probability that event K will occur?

A. 1/6
B. 1/3
C. 1/2
D. 2/3
E. 5/6

P(j) = 0.63 and P both j & k = .42
1= .63+ P ( k) -.42
p(k) = .79 ~ 5/6
IMO E

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The probability of event J occurring is 0.63, while the probability th   [#permalink] 27 Feb 2019, 05:48
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# The probability of event J occurring is 0.63, while the probability th

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