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Question (1)

QN009898

A situation in which the exact outcome cannot be predicted in advance is called:

(A) Deterministic event
(B) Randomness
(C) Measurement
(D) Certainty

Correct Answer: B

Explanation:

Randomness refers to situations where outcomes cannot be predicted exactly in advance.

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Question (2)

QN009899

The probability of an impossible event is:

(A) 1
(B) 0.5
(C) 0
(D) Cannot be determined

Correct Answer: C

Explanation:

An impossible event has probability 0.

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Question (3)

QN009900

Which of the following events is most likely to happen?

(A) Getting 8 on a standard die
(B) Drawing a red ball from a bag containing only red balls
(C) Tossing a coin and getting both head and tail together
(D) Snowfall in Chennai during May

Correct Answer: B

Explanation:

If all balls are red, drawing a red ball is certain.

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Question (4)

QN009901

Probability is measured on a scale from:

(A) –1 to 1
(B) 0 to 100
(C) 0 to 1
(D) 1 to 10

Correct Answer: C

Explanation:

Probability values always lie between 0 and 1.

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Question (5)

QN009902

Which of the following is an example of a random experiment?

(A) Counting pages in a notebook
(B) Measuring the length of a table
(C) Tossing a coin
(D) Calculating area of a rectangle

Correct Answer: C

Explanation:

Tossing a coin gives unpredictable outcomes.

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Question (6)

QN009903

A fair coin is tossed once. The probability of getting heads is:

(A) 0
(B) 1
(C) 1/4
(D) 1/2

Correct Answer: D

Explanation:

A fair coin has two equally likely outcomes.

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Question (7)

QN009904

Which phrase best describes an event having probability 0.5?

(A) Impossible
(B) Certain
(C) Equally likely
(D) Unlikely

Correct Answer: C

Explanation:

Probability 0.5 means equal chance of occurrence and non-occurrence.

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Question (8)

QN009905

A die is rolled once. What is the probability of getting a number greater than 4?

(A) 1/6
(B) 1/3
(C) 1/2
(D) 2/3

Correct Answer: B

Explanation:

Numbers greater than 4 are 5 and 6. Probability = 2/6 = 1/3.

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Question (9)

QN009906

A bag contains 5 blue balls and 3 green balls. One ball is drawn at random. What is the probability of drawing a green ball?

(A) 3/5
(B) 5/8
(C) 3/8
(D) 1/8

Correct Answer: C

Explanation:

Total balls = 8 and green balls = 3. Probability = 3/8.

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Question (10)

QN009907

If a fair die is rolled 60 times and the number 2 appears 12 times, the experimental probability of getting 2 is:

(A) 1/2
(B) 1/5
(C) 1/6
(D) 1/12

Correct Answer: B

Explanation:

Experimental probability = 12/60 = 1/5.

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Question (1)

A situation in which the exact outcome cannot be predicted in advance is called:

Explanation:

Link:

Question (2)

The probability of an impossible event is:

Explanation:

Link:

Question (3)

Which of the following events is most likely to happen?

Explanation:

Link:

Question (4)

Probability is measured on a scale from:

Explanation:

Link:

Question (5)

Which of the following is an example of a random experiment?

Explanation:

Link:

Question (6)

A fair coin is tossed once. The probability of getting heads is:

Explanation:

Link:

Question (7)

Which phrase best describes an event having probability 0.5?

Explanation:

Link:

Question (8)

A die is rolled once. What is the probability of getting a number greater than 4?

Explanation:

Link:

Question (9)

A bag contains 5 blue balls and 3 green balls. One ball is drawn at random. What is the probability of drawing a green ball?

Explanation:

Link:

Question (10)

If a fair die is rolled 60 times and the number 2 appears 12 times, the experimental probability of getting 2 is:

Explanation:

Link:

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