If E and ¯E denote the happening and not happening of an event and P(¯E)=15,P(E)=
A
15
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B
25
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C
35
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D
45
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Solution
The correct option is C45 We note that P(Event E will occur) + P(Event E will not occur) = 1 So, P(E)+P(¯¯¯¯E)=1 here we are given that P(¯¯¯¯E)=15 so, P(E) = 45 So, D is the correct answer.