A box contains 5 red and 3 green balls. Two balls are drawn without replacement. Probability that both are red is: MCQ with Answer and Explanation

Question

Share Report Error

A box contains 5 red and 3 green balls. Two balls are drawn without replacement. Probability that both are red is:

A. (5/8) + (4/7)

B. (5/8) × (4/7) = 5/14

C. (5/8)²

D. (5/8) × (3/7)

Answer: Option B

Solution (By JKSSB Mock Tests)

First red: 5/8, second red given first red: 4/7. Product = 20/56 = 5/14.

This question belongs to: Accountancy and Statistics Statistics

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Statistics Questions

Question #1

General Fertility Rate (GFR) improves upon CBR by:

A. Including stillbirths in the numerator

B. Using mid-year population of both sexes

C. Restricting the denominator to women aged 15-49 years

D. Adjusting for infant mortality

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option C

Explanation:
GFR = (Live births / Women aged 15-49) × 1,000, focusing on the biologically relevant population for childbearing, making it a more refined fertility measure than CBR.

This question belongs to: Accountancy and Statistics Statistics

Question #2

What is the order of the class frequency denoted by (A)?

A. First order

B. Second order

C. Zero order

D. Ultimate order

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option A

Explanation:
The order of a class frequency depends on the number of attributes it involves. (A) involves one attribute, making it first order.

This question belongs to: Accountancy and Statistics Statistics

Question #3

In the construction of Index Numbers, Geometric Mean is considered better than Arithmetic Mean because:

A. It fails the time reversal test

B. It gives equal weight to equal percentage changes

C. It is easier to calculate

D. It ignores zero values

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option B

Explanation:
GM balances out massive price swings better than AM because it treats a doubling (200%) and a halving (50%) equally.

This question belongs to: Accountancy and Statistics Statistics

Explore All Statistics MCQs