Two cards are drawn from a deck without replacement. The probability that both are aces is: MCQ with Answer and Explanation

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Two cards are drawn from a deck without replacement. The probability that both are aces is:

A. 1/1326

B. 1/221

C. 4/663

D. 1/169

Answer: Option B

Solution (By JKSSB Mock Tests)

P = (4/52)×(3/51) = 12/2652 = 1/221.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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Which country has the largest population according to current estimates (2023)?

A. Indonesia

B. China

C. USA

D. India

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Correct Answer: Option D

Explanation:
As of 2023, India surpassed China to become the world's most populous country.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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Which of the following statements about crude birth rate (CBR) is true?

A. CBR is affected by the age structure of the population.

B. CBR includes only male births.

C. CBR = (Total births / Total female population) × 1000

D. CBR is a refined measure of fertility.

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Correct Answer: Option A

Explanation:
CBR uses total population, so age composition influences it.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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Crude Death Rate of 8 per 1,000 implies that in a population of 1 million, annual deaths are approximately:

A. 800,000

B. 800

C. 80,000

D. 8,000

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Correct Answer: Option D

Explanation:
CDR = (Deaths / Population) × 1,000 → Deaths = (CDR × Population) / 1,000 = (8 × 1,000,000) / 1,000 = 8,000. Simple application of the rate formula.

This question belongs to: Accountancy and Statistics Statistics

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