Среднее арефметическое 21,22,23,24,25

To find the arithmetic mean (average) of a set of numbers, you sum all the numbers in the set and divide by the total number of values.

In this case, we have the numbers: 21, 22, 23, 24, and 25.

Adding them together: 21 + 22 + 23 + 24 + 25 = 115

Since there are 5 numbers in the set, we need to divide the sum by 5: 115 / 5 = 23

Therefore, the arithmetic mean of the numbers 21, 22, 23, 24, and 25 is 23.