If A and B are independent events with $P(A)=0.8$ and $P(B)=0.4 $, then value of $P(A ∪ B)$ is :
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 0.88
$P(A)=0.8,P(B)=0.4$
Since, A and B are independent events,
$P(A∩B)=P(A)×P(B)$
$=0.8×0.4=0.32$
$P(A∪B)=P(A)+P(B)-P(A∩B)$
$=0.8+0.4-0.32=0.88$