Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Probability

Question:

If A and B are independent events with $P(A)=0.8$ and $P(B)=0.4 $, then value of $P(A ∪ B)$ is :

Options:

0.58

0.66

0.88

0.98

Correct Answer:

0.88

Explanation:

The correct answer is Option (3) → 0.88

$P(A)=0.8,P(B)=0.4$

Since, A and B are independent events,

$P(A∩B)=P(A)×P(B)$

$=0.8×0.4=0.32$

$P(A∪B)=P(A)+P(B)-P(A∩B)$

$=0.8+0.4-0.32=0.88$