Which of the following events is certain? MCQ with Answer and Explanation

Which of the following events is certain?
A. Getting a number less than 7 on rolling a die
B. Getting a tail when a coin is tossed
C. Getting a 7 on rolling a die
D. Getting a head on two tosses of a coin
Answer: Option A
Solution (By JKSSB Mock Tests)
All faces of a die are less than 7, so this event is certain.

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Practice More Statistics Questions

Question #1
Two cards are drawn from a deck without replacement. The probability that both are aces is:
A. 1/169
B. 4/663
C. 1/1326
D. 1/221

Correct Answer: Option D


Explanation:
P = (4/52)×(3/51) = 12/2652 = 1/221.

This question belongs to: Accountancy and Statistics Statistics
Question #2
A questionnaire includes the question: 'Don't you agree that government policies have improved rural healthcare?' This question violates which design principle?
A. Avoiding double-barreled questions
B. Maintaining neutrality and avoiding leading questions
C. Ensuring questions are answerable by all respondents
D. Mutually exclusive response options

Correct Answer: Option B


Explanation:
The question is leading because it presupposes agreement and pressures respondents toward a positive response, violating the principle of neutrality in questionnaire design.

This question belongs to: Accountancy and Statistics Statistics
Question #3
The maternal mortality ratio is a measure of:
A. Mortality related to pregnancy
B. Overall death rate
C. Fertility
D. Infant health

Correct Answer: Option A


Explanation:
MMR reflects the risk of death due to pregnancy and childbirth.

This question belongs to: Accountancy and Statistics Statistics