Math, asked by hariomrana555, 3 months ago

Mr. and Mrs. X stays in a house along with their 7
children. The female to male ratio in the family is 1:2.
A person is chosen from the family. Find the probability
that the person is male.​

Answers

Answered by Lohit260708
1

Answer:

Probability = 0

Step-by-step explanation:

There are total 9 members in the family.

7 children + Mr. Gulati + Mrs. Gulati. = 9

As the sex ratio is female:male = 1:2

Total number of male in the family = X

∴ Female in the family = 2X

∴ X + 2X = 9

∴ X = 3

One male and one female in the family are Mr. and Mrs. Gulati.

∴ Male children = 3 - 1 = 2

Female children = 6 - 1 = 5

From above, the sex of the children is 2 male and 5 female.

This prooves that, same sex children are not possible for given children.

∴ Probability that all the children are of same sex is zero.

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