# Probablity MCQ Questions And Answers - Mathematics Class 12

Probablity MCQs : This section focuses on the "Probablity" in Mathematics Class 12. These Multiple Choice Questions (MCQs) should be practiced to improve the Mathematics Class 12 skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

Probablity equal to the?

A. ratio of the number of favourable results and the total number of input
B. ratio of the number of favourable outcome and the total number of outcomes
C. ratio of the number of favourable results and the total number of favourable results
D. ratio of the number of favourable results and the total number of outcomes

Question 2

The probability formula is defined as the likelihood of an event to happen.

A. Yes
B. No
C. Can be yes or no
D. Can not say

Question 3

P(S|F) = P(F|F) = ?

A. 0
B. 1
C. infinite
D. random number

Question 4

If P (A) = 0.8, P (B) = 0.5 and P (B|A) = 0.4, find:P (A ∩ B)

A. 0.64
B. 0.98
C. 0.32
D. 0.4

Question 5

P(E|F) = P(E ∩ F)/P(F), provided P(F) can not be?

A. 1
B. 0
C. Both A and B
D. Can not say

Question 6

Let A and B be two given events such that P(A) = 0.6, P(B) = 0.2 and P(A/B) = 0.5. Then P(A'/B') is

A. (1/10)
B. (3/10)
C. (3/8)
D. (6/7)

Question 7

If P(A ∩ B) = 70% and P(B) = 85%, then P(A/B) is equal to

A. (14/17)
B. (17/20)
C. (7/8)
D. (1/8)

Question 8

Two dice are thrown once. If it is known that the sum of the numbers on the dice was less than 6 the probability of getting a sum 3 is

A. (1/18)
B. (5/18)
C. (2/5)
D. (1/5)

Question 9

Three balls are drawn from a bag containing 2 red and 5 black balls, if the random variable X represents the number of red balls drawn, then X can take values

A. 0,1,2,3
B. 0,1,2
C. 0
D. 1,2