Question

the mean of 9 numbers is 12. Find the sum of the numbers.

Answer 1

Sum of numbers is the product of mean and the number of terms

= 12×9

= 108.

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Answer 2

Answer:

Given that :

Mean = 12

Number of observations = 9

Mean = $\frac{sum \: of \: observations}{number \: of \: observatioms}$

Sum = Mean × Number of observations

Sum = 12 × 9

Sum = 108