The population of a country in 2020 was 100 million with a growth rate of 2% per year. Assuming exponential growth, the population in 2022 is approximately: MCQ with Answer and Explanation

The population of a country in 2020 was 100 million with a growth rate of 2% per year. Assuming exponential growth, the population in 2022 is approximately:
A. 108 million
B. 102 million
C. 104 million
D. 104.04 million
Answer: Option D
Solution (By JKSSB Mock Tests)
Using compound formula: 100 × (1.02)^2 = 104.04 million.

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A major disadvantage of secondary data is:
A. Time consuming
B. May not suit the present research objective
C. High cost
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Correct Answer: Option B


Explanation:
Secondary data was collected for a different purpose; definitions and coverage may differ.

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Question #2
If P(A)=0.7, P(B)=0.6, and P(A∪B)=0.9, then P(A∩B) is:
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C. 0.6
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Correct Answer: Option B


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If a constant 5 is subtracted from all observations, the arithmetic mean:
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Correct Answer: Option A


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