Life expectancy at birth increased from 60 to 65 years. This indicates: MCQ with Answer and Explanation
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Question #1
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If P(A)=0.2 and P(B)=0.5, and A, B are independent, then P(A∩B) is:
Correct Answer: Option B
Explanation:
0.2×0.5 = 0.1.
0.2×0.5 = 0.1.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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The harmonic mean of 2, 3, and 6 is:
Correct Answer: Option C
Explanation:
Reciprocals: 1/2, 1/3, 1/6. Sum = 1. AM of reciprocals = 1/3. HM = 1/(1/3) = 3.
Reciprocals: 1/2, 1/3, 1/6. Sum = 1. AM of reciprocals = 1/3. HM = 1/(1/3) = 3.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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The Census of India 2011 was the:
Correct Answer: Option D
Explanation:
Since the first synchronous census in 1881, 2011 was the 15th decennial census.
Since the first synchronous census in 1881, 2011 was the 15th decennial census.
This question belongs to:
Accountancy and Statistics
Statistics
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