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If we select 3 persons randomly from a group, consisting of 4 men, 3 women and 2 boys, then the probability that 2 men are selected is:
Question

If we select 3 persons randomly from a group, consisting of 4 men, 3 women and 2 boys, then the probability that 2 men are selected is:

A.

514\frac{5}{14}​​

B.

712\frac{7}{12}​​

C.

314\frac{3}{14}​​

D.

528\frac{5}{28}​​

Correct option is A

Given:
Total number of people: 4 men + 3 women + 2 boys = 9
Solution:
Total ways to select 3 people from 9:
This is a combination problem, calculated as 9C3 = 9!3!×6!\frac{9!}{ 3! × 6!} ​= 84 ways.
Ways to select 2 men from 4: This is 4C2 =4!(2!×2!)\frac{ 4!} { (2! ×2!)}​ = 6 ways.
Ways to select 1 person from the remaining 5 (3 women and 2 boys): This is 5C1 = 5 ways.
Total ways to select 2 men and 1 other: 6 ways (for men) × 5 ways (for the other) = 30 ways.
Probability of selecting 2 men: (Number of ways to select 2 men and 1 other) (Total ways to select 3 people)\frac{\text{(Number of ways to select 2 men and 1 other)}}{\text{ (Total ways to select 3 people)}}​ = 3084\frac{30} { 84}​​

514\frac{5} { 14}​​

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