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Mean is the average of a group of numbers. It is calculated by adding all numbers in the group, and dividing the sum by the total count of the numbers in the group.
For example: Consider the group of numbers {4, 3, 4, 5, 8, 1, 1, 4, 3, 2}.
Sum of all the numbers = 4 + 3 + 4 + 5 + 8 + 1 + 1 + 4 + 3 + 2 = 35
The total count of the numbers is 10.
Now, divide the obtained sum by the total count of the numbers.
35 ÷ 10 = 3.5
So, the mean of the group of numbers is 3.5.
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The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21,27,23
21 is the smallest number.