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ickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. what is the probability that the ticket drawn has a number which is a multiple of 3 or 5?

User Georgexsh
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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.

alli <3

User Horstforst
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