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The first five prime numbers are 2, 3, 5, 7, and 11. I don't know what you mean by "of 28".
The sum of the first five prime numbers is 28. The sum of the cubes of the first three prime numbers is 160. The average of 28 and 160 is 94.
To find five numbers with a mean of 20, we can use the formula for mean: Mean = (sum of all numbers) / (total number of numbers). Since we have five numbers, the sum of the numbers should be 20 * 5 = 100. To find five numbers that add up to 100, we can choose any set of five numbers that sum up to 100, such as 10, 20, 30, 15, and 25.
30
If the mean of five consecutive odd numbers is 45, the sum of these numbers is 5 times the mean, which equals 225. The middle number in this set is 45, so the five numbers are 43, 45, 47, 49, and 51. The range is calculated as the difference between the largest and smallest numbers, which is 51 - 43 = 8. Thus, the range of the numbers is 8.