Question

There were 10 wet days in June last year. If the name of an individual is selected at random from a directory, write down the probability that his or her birthday last year was on a wet June day. Assume all birthdays are equally liked?

Answer 1

`2/73`

Explanation:

P(birthday on a wet June day)
= `10/365`
= `2/73`

There are 365 days in a year. So the probability of a person's birthday falling on a day is `1/365`. Since there are 10 wet days, the probability of a person's birthday falling on the wet days is `10 xx 1/365`