An event that cannot happen is called: MCQ with Answer and Explanation

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An event that cannot happen is called:

A. Mutually exclusive event

B. Impossible event

C. Complementary event

D. Certain event

Answer: Option B

Solution (By JKSSB Mock Tests)

An impossible event has probability 0.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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In a class of 100 students, 60 play cricket, 50 play football, and 30 play both. Probability a random student plays neither is:

A. 0.3

B. 0.2

C. 0.1

D. 0.4

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Correct Answer: Option B

Explanation:
P(C∪F) = 60+50-30 = 80. Playing neither = 100 - 80 = 20; probability = 20/100 = 0.2.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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Which of the following is a measure of mortality?

A. General Fertility Rate

B. Crude Birth Rate

C. Total Fertility Rate

D. Maternal Mortality Ratio

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Correct Answer: Option D

Explanation:
Maternal Mortality Ratio quantifies deaths related to pregnancy and childbirth, a mortality indicator.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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Two dice are rolled. Probability that the sum is 7 or 11 is:

A. 1/6

B. 5/36

C. 7/36

D. 2/9

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Correct Answer: Option D

Explanation:
Ways for sum 7: 6; for sum 11: 2. Total favorable = 8. Probability = 8/36 = 2/9.

This question belongs to: Accountancy and Statistics Statistics

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