A box contains 75 tickets numbered 1 to 75. A ticket is drawn at random from the box. Find the probability that: number on the ticket id divisible by 3 and 5.

A box contains 75 tickets numbered 1 to 75. A ticket is drawn at random from the box. Find the probability that: number on the ticket is a perfect square.

A bag contains 75 tickets numbered from 1 to 75. One ticket is drawn at random. Find the probability that: Number on the ticket is a perfect square or divisible by 4.

From 10,000 lottery tickets numbered from 1 to 10,000, one ticket is drawn at random. What is the probability that the number marked on the drawn ticket is divisible by 20

There are 15 tickets in a box, each bearing one of the numbers from 1 to 15. One ticket is drawn at random from the box. Find the probability of event that the ticket drawn: (i) shows an even number (ii) shows a number which is a multiple of 5.