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Probability Class 12 Multiple Choice Test

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Probability Class 12 (121301)


General Instruction:

1. There are 10 MCQ’s in the Test.

2. Passing %age is 50.

3. After time gets over, test will be submitted itself.

1 / 10

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

2 / 10

In a deck of 52 playing cards, what is the probability of drawing a spade?

A) 1/4

B) 13/52

C) 4/13

D) 26/52

3 / 10

The probability distribution of a random variable gives:

A) The possible values of the random variable.

B) The probabilities of the possible values.

C) The mean of the random variable.

D) The standard deviation of the random variable.

4 / 10

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.

5 / 10

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

6 / 10

A bag contains 4 red balls and 6 blue balls. If one ball is drawn at random, what is the probability of drawing a red ball?

A) 4/10

B) 6/10

C) 1/4

D) 3/5

7 / 10

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

8 / 10

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

9 / 10

In a bag, there are 6 red balls and 4 blue balls. If two balls are drawn at random without replacement, what is the probability of getting two red balls?

A) 3/8

B) 1/3

C) 5/12

D) 1/4

10 / 10

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.

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