There are infinitely many groups of 20 numbers that have a mean of 25.
One example: 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35
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The composite numbers between 20 and 25 are 21, 22, and 24. 23 is the only prime number between 20 and 25.
20, 21, 22, 24, 25
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.
10, 10, 20, 30, 30, 50.
20, 21, 22, 24, 25