Question

In a game there are 70 people in which 40 are boys and 30 are girls, out of which 10 people are selected at random. One from the total group, thus selected is selected as a leader at random. What is the probability that the person, chosen as the leader is a boy?

✔ A.

4/7

B.

4/9

C.

5/7

D.

2/7

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Answer 1

Hey mate,.

Answer:A. 4/7

Step-by-step explanation:

The total groups contains boys and girls in the ratio 4:3

If some person are selected at random from the group, the expected value of the ratio of boys and girls will be 4:3

If the leader is chosen at random from the selection, the probability of him being a boy = 4/7

Hope it will help you

✌️sai

Answer 2

Answer:

Answer is option A) 4/7

Explanation:

Total number of people in the group = 70

total number of boys in the group = 40

total number of girls in the group = 30

then the probablity that a boy is selected as the leader of the group of 10 random person is = $\frac{40}{70} = \frac{4}{7}$ as the group is formed from the people in the game.