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LET A and B be the events such that P(A...

LET A and B be the events such that P(A) = 0.3 and `P(A cup B) = 0.8` . If A and B are independent events , then P(B) is :

A

`2/7`

B

`5/7`

C

`1/2`

D

None of these

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • Let A and B be two events such that P(A) = 0.3 and P(A cup B) = 0.8 . If A and B are independent then P(B) =

    A
    44382
    B
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    C
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    D
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    C
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    D
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  • A and B are two events such that P(A)!=0, P(B//A) is

    A
    1, 1
    B
    0 and 1
    C
    0, 0
    D
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