Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Probability

Question:

For two events A and B

Match List I with List II

LIST I LIST II
A. $P(\overline{A}∩\overline{B})=P(\overline{A}).P(\overline{B})$ I. P(A/B)≥ P(A)
B. A B and P(B) ≠ 0 II. P(A)=P(B)
C. P(A ∪ B) =P(A) +P(B) III. A and B are independent events
D. P(A|B)=P(B|A) IV. A and B are mutually exclusive events

Choose the correct answer from the options given below :

Options:

A-III, B-II, C-IV, D-I

A-III, B-I, C-IV, D-II

A-IV, B-II, C-III, D-I

A-IV, B-I, C-III, D-II

Correct Answer:

A-III, B-I, C-IV, D-II

Explanation:

The correct answer is Option (2) → A-III, B-I, C-IV, D-II

A. $P(\overline{A}∩\overline{B})=P(\overline{A}).P(\overline{B})$ ⇒ A and B are independent events (III)

B. $A⊂B,P(B)≠0⇒P(A/B)=\frac{P(A)}{P(B)}$

as $P(B)≤1⇒\frac{P(A)}{P(B)}≥P(A)$ → (I)

C. $P(A ∪ B) =P(A) +P(B)$

$⇒P(A ∩ B)=0$ ⇒ A and B are mutually exclusive events (IV)

D. $P(A|B)=P(B|A)⇒\frac{P(A ∩ B)}{P(B)}=\frac{P(A ∩ B)}{P(A)}$

$⇒P(A)=P(B)$ (II)