What is the mean of the numbers 1, 3, 5, 7, 9?

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Multiple Choice

What is the mean of the numbers 1, 3, 5, 7, 9?

Explanation:
The mean, or average, is found by adding all the numbers and then dividing by how many numbers there are. Add them: 1 + 3 + 5 + 7 + 9 = 25. There are five numbers, so 25 ÷ 5 = 5. So the mean is 5. Since the numbers are evenly spaced and there are an odd number of terms, the average matches the middle value, which is 5. The other options would require a different total or count, but with this set the average works out to 5.

The mean, or average, is found by adding all the numbers and then dividing by how many numbers there are. Add them: 1 + 3 + 5 + 7 + 9 = 25. There are five numbers, so 25 ÷ 5 = 5. So the mean is 5. Since the numbers are evenly spaced and there are an odd number of terms, the average matches the middle value, which is 5. The other options would require a different total or count, but with this set the average works out to 5.

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