Question

Riya and Kajal are friends. Probability that both will have the same birthday isthe same birthday is:

Answer 1

Given:

Riya and Kajal are friends.

To find:

Probability that both will have the same birthday isthe same birthday is:

Solution:

From given, we have,

Riya and Kajal are friends.

The probability that both will have the same birthday is given as follows:

Riya will have one of the 365 days of the year as her birthday. Similarly, Kajal will have one of the 365 days like her birthday.

The total number of ways in which Riya and Kajal may have their birthday are:

365 × 365

Then Riya and Kajal may have the same birthday on any one of 365 days.

Therefore the number of ways in which Riya and Kajal may have same birthday are:

= 365/365 × 365 = 1/365

Therefore, 1/365 is the probability that both will have the same birthday

Answer 2

Answer:

Step-by-step explanation:

Riya may have any one of 365 days of the year as her birthday. Similarly, Kajal may have any one of 365days as her birthday.

A total number of ways in which Riya and Kajal may have their birthday are:

365 x 365

Then Riya and Kajal may have the same birthday on any one of 365 days.

Therefore the probability of Riya and Kajal may have same birthday are:

= 365/(365 x 365)

= 1/365