A) 0.5
B) 0.44
C) 0.8
D) 0.25
Correct Answer: B
Solution :
Given, Probability of A to fail exam = 0.2 Probability of B to fail exam = 0.3 Since, A and B are independent events \[\therefore \]\[P(A\cap B)=P(A).P(B)=0.06\] Now, \[P(A\cup B)=P(A)+P(B)-P(A\cap B)\] \[=0.2+0.3-0.06=0.44\]You need to login to perform this action.
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