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Question (11)

QN009938

In probability, the outcome of tossing a coin is considered random because:

(A) The coin has memory
(B) The result can be predicted exactly
(C) The exact result is unpredictable
(D) The result is always heads

Correct Answer: C

Explanation:

Random outcomes cannot be predicted with certainty.

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Question (12)

QN009939

Which of the following is an example of experimental probability?

(A) Calculating chance using formulas only
(B) Recording outcomes after repeated trials
(C) Guessing without trials
(D) Assuming all outcomes are equal

Correct Answer: B

Explanation:

Experimental probability is obtained through repeated observations.

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Question (13)

QN009940

A survey of 80 students shows that 32 students prefer chess club. What is the probability that a randomly selected student prefers chess club?

(A) 2/5
(B) 3/5
(C) 1/4
(D) 4/5

Correct Answer: A

Explanation:

Probability = 32/80 = 2/5.

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Question (14)

QN009941

Which branch of mathematics studies randomness and likelihood?

(A) Algebra
(B) Geometry
(C) Statistics
(D) Probability

Correct Answer: D

Explanation:

Probability studies random events and likelihood.

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Question (15)

QN009942

A bag contains only yellow balls. The probability of drawing a yellow ball is:

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

Correct Answer: C

Explanation:

If all balls are yellow, drawing yellow is certain.

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Question (16)

QN009943

A die is rolled 90 times. If 6 appears 18 times, the experimental probability of getting 6 is:

(A) 1/2
(B) 1/3
(C) 1/5
(D) 1/6

Correct Answer: C

Explanation:

Experimental probability = 18/90 = 1/5.

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Question (17)

QN009944

Which of the following is a random experiment?

(A) Adding two numbers
(B) Measuring a pencil
(C) Tossing a die
(D) Drawing a rectangle

Correct Answer: C

Explanation:

Tossing a die produces unpredictable outcomes.

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Question (18)

QN009945

A fair coin is tossed once. Which of the following is the sample space?

(A) {H}
(B) {T}
(C) {H, T}
(D) {1, 2}

Correct Answer: C

Explanation:

A fair coin can show Head or Tail.

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Question (19)

QN009946

In a class survey, 15 out of 60 students prefer mango juice. What is the statistical probability that a student prefers mango juice?

(A) 1/2
(B) 1/3
(C) 1/4
(D) 3/4

Correct Answer: C

Explanation:

Probability = 15/60 = 1/4.

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Question (20)

QN009947

Which statement about experimental and theoretical probability is correct?

(A) They are always exactly equal
(B) Experimental probability is based on trials, while theoretical probability is based on reasoning
(C) Theoretical probability depends on collected data only
(D) Experimental probability cannot change

Correct Answer: B

Explanation:

Experimental probability uses data while theoretical probability uses logical reasoning.

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Question (11)

In probability, the outcome of tossing a coin is considered random because:

Explanation:

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Question (12)

Which of the following is an example of experimental probability?

Explanation:

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Question (13)

A survey of 80 students shows that 32 students prefer chess club. What is the probability that a randomly selected student prefers chess club?

Explanation:

Link:

Question (14)

Which branch of mathematics studies randomness and likelihood?

Explanation:

Link:

Question (15)

A bag contains only yellow balls. The probability of drawing a yellow ball is:

Explanation:

Link:

Question (16)

A die is rolled 90 times. If 6 appears 18 times, the experimental probability of getting 6 is:

Explanation:

Link:

Question (17)

Which of the following is a random experiment?

Explanation:

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Question (18)

A fair coin is tossed once. Which of the following is the sample space?

Explanation:

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Question (19)

In a class survey, 15 out of 60 students prefer mango juice. What is the statistical probability that a student prefers mango juice?

Explanation:

Link:

Question (20)

Which statement about experimental and theoretical probability is correct?

Explanation:

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