#Mat9890 : Questions from Mathematics on probability


Question Number: #Mat9890

Which of the following equalities is not necessarily true if A,B are events?

 


Options:
A.) None Of These
B.) P(A∩B)= P(A). P(B)
C.) P(A U B) = P(A) + P(B) - P(A∩B)
D.) P(A∩B)= P(A). P(B|A)


Answer is option : B

Solution:

P(A∩B) =P(A). P(B) is true if and only if the events A & B are independent events.


Question Related Topics:
probability
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