Question

Mary had a chance to select a number from 1 to 20 randomly. What is the probability that the number is divisible by 3?

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Answer 1

The answer is 9 because it is divisible by 3

Explanation:

9/3=3

Answer 2

6/20 = 3/10

Explanation:

There are 6 numbers divisible by 3 between 1-20

Being: 3 6 9 12 15 18

With that information, we know that there are 6 numbers out of 20 that are possible to meet the criteria, hence, the chances of Mary getting a number divisible by 3 is 6/20, or 3/10 simplified.