Assertion (A): Harmonic mean is greater than geometric mean for positive numbers. Reason (R): For positive numbers, AM ≥ GM ≥ HM. MCQ with Answer and Explanation
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Question #1
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Three students A,B,C solve a problem. Probabilities 1/2, 2/3, 3/4. Probability that exactly two of them solve it is:
Correct Answer: Option A
Explanation:
P(AB'C) = 1/2 * 1/3 * 3/4 = 3/24; P(AB'C)? Let's compute exactly two: A and B not C: 1/2*2/3*1/4=2/24; A not B C: 1/2*1/3*3/4=3/24; not A B C: 1/2*2/3*3/4=6/24. Sum = 11/24.
P(AB'C) = 1/2 * 1/3 * 3/4 = 3/24; P(AB'C)? Let's compute exactly two: A and B not C: 1/2*2/3*1/4=2/24; A not B C: 1/2*1/3*3/4=3/24; not A B C: 1/2*2/3*3/4=6/24. Sum = 11/24.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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A good questionnaire should have:
Correct Answer: Option B
Explanation:
Clarity and simplicity are fundamental principles.
Clarity and simplicity are fundamental principles.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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The total fertility rate in India is currently around replacement level (2.1). Which state has the highest TFR?
Correct Answer: Option A
Explanation:
Bihar has one of the highest TFRs (around 3.0).
Bihar has one of the highest TFRs (around 3.0).
This question belongs to:
Accountancy and Statistics
Statistics
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