Probability Class 12 Mcq Test (121301)

Two dice are rolled. What is the probability of getting a sum of 7?

A) 1/6

B) 1/12

C) 1/36

D) 1/4

In a bag, there are 4 red balls and 5 blue balls. If two balls are drawn at random without replacement, what is the probability of getting a red ball and then a blue ball?

A) 4/45

B) 4/9

C) 5/18

D) 2/9

In a race, the probability of John winning is 1/5 and the probability of Mark winning is 3/10. What is the probability that either John or Mark wins the race?

A) 1/15

B) 7/10

C) 1/2

D) 3/5

If two events are mutually exclusive, what can you say about their probabilities?

A) The probabilities are equal.

B) The probabilities are different.

C) The probabilities are multiplied.

D) The probabilities are added.

In a bag, there are 3 red balls and 2 green balls. If one ball is drawn at random and then put back in the bag, and then another ball is drawn, what is the probability of getting a red ball both times?

A) 1/10

B) 2/5

C) 3/5

D) 4/5

In a class, 70% of the students wear glasses. If a student is chosen at random, what is the probability that they do not wear glasses?

A) 0.3

B) 0.7

C) 0.4

D) 0.6

If two events are independent, what can you say about their probabilities?

A) The probabilities are equal.

B) The probabilities are different.

C) The probabilities are multiplied.

D) The probabilities are added.

In a class, 60% of the students like chocolate and 40% like vanilla. If a student is chosen at random, what is the probability that they like both chocolate and vanilla?

A) 24%

B) 16%

C) 40%

D) 60%

If two events are dependent, what can you say about their probabilities?

A) The probabilities are equal.

B) The probabilities are different.

C) The probabilities are multiplied.

D) The probabilities are added.

In a bag, there are 5 red balls, 3 green balls, and 2 blue balls. If one ball is drawn at random, what is the probability of getting a green ball?

A) 3/10

B) 5/10

C) 2/10

D) 1/4