Probability

Quantitative Aptitude (CGL) SSC CGL Exam

Title

45:30

8 of 24 completed

5 of 15 completed

38 of 100 completed

8 of 20 completed

Indian Economy - Understanding the basics of Indian economic system

From a group of 4 men ,3 women, 2 persons are selected at random, Find the probability at least one man is selected ?

6/7

7/6

5/6

11/21

Answer
6/7
Explanation :
7C₂ = 7*6/2 = 21
4C₂*3C₂ + 4C₂ = 4*3 + (4*3)/2 = 12+6 = 18
P = 18/21 = 6/7