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Question: 1 / 400

In calculating the average, if the complete set of numbers equals 56 and three of them sums to 40, what is the missing number?

16

To find the missing number in the set, you start by understanding that the average of a set of numbers is calculated by dividing the sum of the numbers by the total count of those numbers.

In this case, we know that the complete set of numbers has a total sum of 56 and that three of those numbers sum to 40.

First, to find the missing number, subtract the sum of the three known numbers from the total sum:

Total sum (56) - Sum of three numbers (40) = Missing number

So, 56 - 40 equals 16. The missing number is therefore 16.

This approach is clear and systematic, allowing one to determine the answer simply by applying the average formula and basic subtraction.

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