Question

Find the probability of two persons being born on the same day?

Answer 1

Person A can be born on any day of the year since they’re the first person we’re asking. The probability of being born any day of the year is 1 or more specifically: 365/365.

Since Person B must be born on the same day as Person A their probability is 1/365.

We want both of these events to happen so multiply the probabilities:

365

`(365)/(365) . (1)/(365) = 0.0027`

So you have a 0.27% chance of walking up to a stranger and discovering that their birthday is the same day as yours.

I think you are happy with this answer

Answer 2

1/365

Explanation:

The probability of being born any day of the year is 1 or more specifically: 365/365. Since Person B must be born on the same day as Person A their probability is 1/365