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A spinner with 10 equally sized slices has 3 blue slices, red 2 slices, and 5 yellow slices. The dial is spun and stops on a slice at random. What is the probability that the dial stops on a blue slice?

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Answer:

3/10

Step-by-step explanation:

Then let's see how many blue slices there are:

3

So put the amount of blue slices over the amount of slices in total to get a fraction:

3/10

This fraction is in simplest form because 3 is a prime number.