Probability Questions Quiz

Two dice are thrown together. Find the probability that we get a total 9.

• 1/7

• 1/9

• 3/5

• ¾

A bag contains 4 red, 5 white and 6 black balls. What is the probability that two balls drawn are red and black?

• 8/77

• 8/35

• 8/65

• 8/31

Two dice are thrown. Find the probability that the top face numbers are same.

• 1/6

• 1/3

• 2/3

• 2/5

If A, B and C are any three events such that P(A)=P(B)=P(C)=1/4, P(AÇB)=P(BÇC)=0; P(CÇA)=1/8. Find the probability that at least one of the events A, B and C occurs.

• 1/5

• 5/8

• 4/5

• 2/3

An event whose occurrence is inevitable when an experiment is performed is called as

• Simple event

• Compound event

• Certain event

• Impossible event

If A and B are two events, then P(AUB)=_________________

• P(A)+P(B)+ P(A∩B)

• P(A)+P(B)- P(A∩B)

• P(A)P(B)- P(A∩B)

• P(A)-P(B)- P(A∩B)

If the events A and B are independent, the events A∪B are

• A⋃B=φ

• Also independent

• Dependent

• Both are equal

Mutually Exclusive events

• Contain all sample points

• Contain all common sample points

• Does not contain any common sample point

• Does not contain any sample point

What would be the probability of an event 'G' if G' denotes its complement, according to the axioms of probability?

• P (G') = 1 / P (G)

• P (G') = 1 - P (G)

• P (G') = 1 + P (G)

• P (G') = 1 * P (G)

A variable that can assume any value between two given points is called

• Continuous random variable

• Discrete random variable

• Irregular random variable

• Uncertain random variable