Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Probability

Question:

Consider two independent events A and B such that P(A) = 0.3, P(B) = 0.6.

Match List-I with List-II

List-I

List-II

(A) P(A and B)

(I) 0.28

(B) P(A and not B)

(II) 0.18

(C) P(A or B)

(III) 0.12

(D) P(neither A nor B)

(IV) 0.72

Choose the correct answer from the options given below.

Options:

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

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

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

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

Correct Answer:

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

Explanation:

The correct answer is Option (3) → (A)-(II), (B)-(III), (C)-(IV), (D)-(I) **

List-I

List-II

(A) P(A and B)

(II) 0.18

(B) P(A and not B)

(III) 0.12

(C) P(A or B)

(IV) 0.72

(D) P(neither A nor B)

(I) 0.28

Given: $P(A)=0.3,\ P(B)=0.6$, and A, B are independent.

(A) $P(A\text{ and }B)=P(A)P(B)=0.3\times0.6=0.18$ → (II)

(B) $P(A\text{ and not }B)=P(A)P(B')=0.3\times(1-0.6)=0.3\times0.4=0.12$ → (III)

(C) $P(A\text{ or }B)=P(A)+P(B)-P(A)P(B)=0.3+0.6-0.18=0.72$ → (IV)

(D) $P(\text{neither A nor B})=1-P(A\text{ or }B)=1-0.72=0.28$ → (I)

Matching:

(A) → (II), (B) → (III), (C) → (IV), (D) → (I)