Tickets numbered from 1 to 12 are mixed up together, and then a ticket is withdrawn at random. Find the probability that the ticket has a number which is a multiple of 2 or 3.
We know that,
Probability of occurrence of an event 
Total no.of outcomes are 12
Desired output is picking a number which is multiple of 2 or 3. So, desire outputs are 2, 3, 4, 6, 8, 9, 10, 12. Total no.of desired outputs are 8
Therefore, the probability of getting a number which is multiple of 2 or 3 
Conclusion: Probability of picking a ticket which is multiple of 2 or 3 is 
1