Question

in a family with 4 children, calculate the following probabilities (assuming the birth of boys and girls is equally probable):a) that all children are maleb) that all children are male, knowing that the first is male

Answer 1

Given:

The family has 4 children.

Required:

We have to find the probabilities of the following:

a) that all children are male,

b) that all children are male, knowing that the first is male.

Explanation:

There are the following cases:

4 boys; 3 boys and 1 girl; 2 boys and 2 girls; 1 boy and 3 girls; 4 girls.

So the total number of outcomes is 5.

Now th