Question

Suppose there were 4,065,014 births in a given year. Of those births 2,081,287 were boys and 1,983,727 were girls. What is the probability that both children will be boys?

Answer 1

The required probability is
`\simeq 0.26214`

Explanation:

There were 4,065,014 births in a given year and of those births 2,081,287 were boys and 1.983,727 were girls.

So, P(both children will be boys) =
`\frac {^(2081287){C}_2}{^(4065014){C}_(2)}`

`\simeq 0.26214`