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 - 3
Question 1:
If two events A and B area such that P(A) =0.3, P(B) = 0.4 and P(B|A∪B)=
(a) 1/2
(b) 1/3
(c) 2/5
(d) 1/4
Correct Answer – (D)
Question 2:
Suppose a random variable X follows the binomial distribution with parameters n and p, where 0 < p < 1. If p(x = r) / P(x = n – r) is independent of n and r, then p equals
(a) 1/2
(b) 1/3
(c) 1/5
(d) 1/7
Correct Answer – (A)
Question 3:
For the following probability distribution:
| X | -4 | -3 | -2 | -1 | 0 |
| P(X) | 0.1 | 0.2 | 0.3 | 0.2 | 0.2 |
E(X) is equal to
(a) 0
(b) -1
(c) -2
(d) -1.8
Correct Answer – (D)
Question 4:
The probability of guessing correctly at least 8 out of 10 answers on a true-false type examination is
(a) 7/64
(b) 7/128
(c) 45/1024
(d) 7/41
Correct Answer – (B)
Question 5:
Two dice are thrown. If it is known that the sum of numbers 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)
MCQ Questions Class 12 Probability With Answers
Question 6:
P has 2 children. He has a son, Jatin. What is the probability that Jatin’s sibling is a brother?
(a) 1/3
(b) 1/4
(c) 2/3
(d) 1/2
Correct Answer – (A)
Question 7:
For the following probability distribution
| X | 1 | 2 | 3 | 4 |
| P(X) | 1/2 | 1/5 | 3/10 | 2/5 |
p(X2) is equal to
(a) 3
(b) 5
(c) 7
(d) 10
Correct Answer – (D)
Question 8:
The probability distribution of a discrete random variable X is given below:
| X | 2 | 3 | 4 | 5 |
| P(X) | 5/k | 7/k | 9/k | 11/k |
The value of k is
(a) 8
(b) 16
(c) 32
(d) 48
Correct Answer – (C)
Question 9:
Two cards are drawn from a well shuffled deck of 52 playing cards with replacement. The probability, that both cards are queens, is
(a) 1/13 × 1/13
(b) 1/13 + 1/13
(c) 1/13 × 1/17
(d) 1/13 × 4/51
Correct Answer – (A)
Question 10:
A flashlight has 8 batteries out of which 3 are dead. If two batteries are selected without replacement and tested, the probability that both are deal is
(a) 33/56
(b) 9/64
(c) 11/4
(d) 3/28
Correct Answer – (D)
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