Question

There are 30 tickets numbers from 1 to 30 in a box and a ticket is drawn at random. If A is the event that the number on the ticket is a perfect square then find it's probability?​

Answer 1

Answer:

Given, there are 30 tickets in a box.

A ticket is drawn at random.

Let S be the sample space,

(S)=={1,2,3,4,.........,30}

n(S)=30

Let A is the event that the number on the ticket is a prime number less than 15

∴ A={2,3,5,7,11,13}

∴ n(A)=6.