# What is the probability ?

20 tickets serially numbered from 1 to 20 are mixed and one ticket is taken out randomly. What is the probability that the number on the ticket will be multiple of 3 or 5?

- 9/20
- 1/2
- 2/3
- 8/15

**Answer: (1) 9/20**

**Explanation:-
**20 tickets serially numbered from 1 to 20 are mixed and one ticket is taken out randomly,

The tickets will be multiple of 3 and 5 = 3, 5, 6, 9, 10, 12, 15, 18, 20

Then, the number of tickets of the multiple of 3 and 5 = 9

The total number of tickets = 20

Then, the probability of the tickets of the multiple of 3 and 5 = 9/20

Hence, the answer is (1) 9/20.