A box has 2 red, 3 blue, 5 green balls. Probability of drawing a green ball is: MCQ with Answer and Explanation

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A box has 2 red, 3 blue, 5 green balls. Probability of drawing a green ball is:

A. 1/2

B. 3/10

C. 2/5

D. 5/10

Answer: Option D

Solution (By JKSSB Mock Tests)

Total balls = 10, green = 5, probability = 5/10 = 1/2. But option B says 5/10, which is the same. So B is correct.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

In India, the registration of births and deaths is compulsory under:

A. The Constitution of India

B. The Registration of Births and Deaths Act, 1969

C. The Vital Statistics Act, 1971

D. The Census Act, 1948

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Correct Answer: Option B

Explanation:
RBD Act, 1969 mandates registration.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Life expectancy at birth is lower than life expectancy at age 1 because:

A. Migration affects newborns more

B. Infant mortality pulls down the average for newborns

C. Data is collected differently

D. People age faster after birth

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Correct Answer: Option B

Explanation:
Life expectancy at birth includes the risk of dying in infancy; those surviving to age 1 have passed this high-risk period, so their remaining life expectancy is higher than at birth.

This question belongs to: Accountancy and Statistics Statistics

Question #3

The term 'Demography' was first used by:

A. Achille Guillard

B. John Graunt

C. Karl Pearson

D. Thomas Malthus

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Correct Answer: Option A

Explanation:
Achille Guillard coined the term 'Demography' in 1855 in his book 'Elements de Statistique Humaine'.

This question belongs to: Accountancy and Statistics Statistics

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