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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 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

2 / 10

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%

3 / 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.

4 / 10

A card is drawn from a well-shuffled deck and not replaced. Then a second card is drawn. What is the probability of getting a heart and then a spade?

A) 1/52

B) 1/26

C) 1/104

D) 1/13

5 / 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

6 / 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.

7 / 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.

8 / 10

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.

9 / 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

10 / 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

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