CBSE Class 12 Probability Multiple Choice Questions with Answers. MCQ Questions Class 12 Probability with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT MCQ questions Class 12 Probability with Answers to know their preparation level.
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MCQ Questions Class 12 Probability with Answers - Set - 4
Question 1:
Three persons, A, B and C, fire at a target in turn, starting with A. Their probability of hitting the target are 0.4, 0.3 and 0.2 respectively. The probability of two hits is
(a) 0.024
(b) 0.188
(c) 0.336
(d) 0.452
Correct Answer – (B)
Question 2:
A and B are events such that P(A) = 0.4, P(B) = 0.3 and P(A , B) = 0 .5. Then P(B’ + A) equals
(a) 2/3
(b) 1/2
(c) 3/10
(d) 1/5
Correct Answer – (D)
Question 3:
wo dice are thrown. If it is known that the sum of number on the dice was less than 6, the probability of getting a sum 3, is
(a) 1/18
(b) 5/18
(c) 1/5
(d) 2/5
Correct Answer – (C)
Question 4:
Two cards are drawn successively from a well shuffled pack of 52 cards. Find the probability that one is a red card the other is a queen.
(a) 103/1326
(b) 101/1326
(c) 101/1426
(d) 103/1426
Correct Answer – (B)
Question 5:
If A and B are two independent events such that P(A) = 0.75, P(A ∪ B) = 0.65 and P(b) = P, then find the value of P.
(a) 9/14
(b) 7/15
(c) 5/14
(d) 8/15
Correct Answer – (D)
MCQ Questions Class 12 Probability With Answers
Question 6:
Let X be a discrete random variable assuming values x1, x2, …, xn with probabilities p1, p2, …, pn, respectively. Then variance of X is given by
(a) E(X2)
(b) E(X2) + E(X)
(c) E(X2) – [E(X)]2
(d) √E(X2) – [E(X)]2
Correct Answer – (C)
Question 7:
Which one of the following is not a requirement of a binomial distribution?
(a) There are two outcomes for each trial
(b) There is a fixed number of trials
(c) The outcomes must be dependent on each other.
(d) The probability of success must be the same for all trials.
Correct Answer – (C)
Question 8:
A bag contains 3 white, 4 black and 2 red balls. If 2 balls are drawn at random (without replacement), then the probability that both the balls are white is
(a) 1/18
(b) 1/36
(c) 1/12
(d) 1/24
Correct Answer – (C)
Question 9:
If A and Bare events such that P(A) = 1/3, P(B) = 1/4 and P(A ∩ B) = 112, then find P(not A and not B).
(a) 1/4
(b) 1/2
(c) 2/3
(d) 1/3
Correct Answer – (B)
Question 10:
If A and B are two independent events, then the probability of occurrence of at least of A and B is given by
(a) 1 – P(A) P(b)
(b) 1 – P(A) P(B’)
(c) 1 – P(A’) P(B’)
(d) 1 – P(A’) P(b)
Correct Answer – (C)
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