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Question (31)

QN009988

A box contains red, blue and green pens. Which event represents selecting a non-red pen?

(A) {Red}
(B) {Blue, Green}
(C) {Green}
(D) {Red, Blue}

Correct Answer: B

Explanation:

Non-red pens are blue and green.

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Question (32)

QN009989

Which of the following sample spaces is most suitable for studying rainfall intensity?

(A) {Rain, No Rain}
(B) {Light Rain, Heavy Rain}
(C) {No Rain, Drizzle, Light Rain, Heavy Rain}
(D) {Wet, Dry}

Correct Answer: C

Explanation:

This sample space gives more detailed rainfall categories.

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Question (33)

QN009990

A die is rolled once. What is the probability of getting a number less than 5?

(A) 1/6
(B) 1/3
(C) 2/3
(D) 4/6

Correct Answer: D

Explanation:

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

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Question (34)

QN009991

Which of the following is a correct event for tossing three coins?

(A) {HHH, HHT}
(B) {1, 2, 3}
(C) {H, T}
(D) {HT}

Correct Answer: A

Explanation:

HHH and HHT are valid outcomes in tossing three coins.

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Question (35)

QN009992

A student selects one integer from –2 to 2. What is the sample size?

(A) 3
(B) 4
(C) 5
(D) 6

Correct Answer: C

Explanation:

Integers are –2, –1, 0, 1 and 2.

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Question (36)

QN009993

Which of the following is certain when a standard die is rolled?

(A) Getting 8
(B) Getting an even number
(C) Getting a number from 1 to 6
(D) Getting a prime number

Correct Answer: C

Explanation:

Every outcome on a standard die lies between 1 and 6.

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Question (37)

QN009994

The event “getting a vowel” when selecting a letter from the word “INDIA” is:

(A) {N, D}
(B) {I, A}
(C) {D, A}
(D) {I, N}

Correct Answer: B

Explanation:

The vowels in INDIA are I and A.

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Question (38)

QN009995

Which experiment has the largest sample size?

(A) Tossing one coin
(B) Rolling one die
(C) Tossing two coins
(D) Rolling two dice

Correct Answer: D

Explanation:

Rolling two dice gives 36 outcomes, the largest among the options.

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Question (39)

QN009996

A card numbered from 1 to 10 is selected randomly. What is the probability of selecting a perfect square?

(A) 1/10
(B) 2/10
(C) 3/10
(D) 4/10

Correct Answer: C

Explanation:

Perfect squares are 1, 4 and 9. Probability = 3/10.

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Question (40)

QN009997

Which statement best describes an event in probability?

(A) It is always a single outcome only
(B) It contains outcomes chosen from the sample space
(C) It includes impossible outcomes only
(D) It cannot contain more than two outcomes

Correct Answer: B

Explanation:

An event is formed using outcomes from the sample space.

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Question (31)

A box contains red, blue and green pens. Which event represents selecting a non-red pen?

Explanation:

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Question (32)

Which of the following sample spaces is most suitable for studying rainfall intensity?

Explanation:

Link:

Question (33)

A die is rolled once. What is the probability of getting a number less than 5?

Explanation:

Link:

Question (34)

Which of the following is a correct event for tossing three coins?

Explanation:

Link:

Question (35)

A student selects one integer from –2 to 2. What is the sample size?

Explanation:

Link:

Question (36)

Which of the following is certain when a standard die is rolled?

Explanation:

Link:

Question (37)

The event “getting a vowel” when selecting a letter from the word “INDIA” is:

Explanation:

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Question (38)

Which experiment has the largest sample size?

Explanation:

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Question (39)

A card numbered from 1 to 10 is selected randomly. What is the probability of selecting a perfect square?

Explanation:

Link:

Question (40)

Which statement best describes an event in probability?

Explanation:

Link:

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