answer:
To find the probability that the ticket drawn has a number which is a multiple of 3 or 5, we need to determine the total number of favorable outcomes and the total number of possible outcomes.
There are 20 tickets in total, numbered from 1 to 20. Out of these, we need to determine how many tickets have numbers that are multiples of 3 or 5.
Multiples of 3: 3, 6, 9, 12, 15, 18
Multiples of 5: 5, 10, 15, 20
We can see that the number 15 is a multiple of both 3 and 5, but we count it only once.
So, there are a total of 9 tickets that have numbers that are multiples of 3 or 5.
The probability can be calculated by dividing the number of favorable outcomes (9) by the total number of possible outcomes (20):
Probability = Number of favorable outcomes / Total number of possible outcomes
Probability = 9/20
Therefore, the probability that the ticket drawn has a number which is a multiple of 3 or 5 is 9/20.
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