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m, e, a, n, left parenthesis, 1, comma, 2, comma, 3, comma, 4, comma, 5, comma, 6, comma, 7, comma, 8, comma, 9, comma, 10, right parenthesis
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1+2+3+4+5+6+7+8+9+10=55
To find the mean of the set 1,2,3,4,5,6,7,8,9,10 first add the members together.
\frac{55}{10}=\frac{11}{2}
The mean (average) of the set 1,2,3,4,5,6,7,8,9,10 is found by dividing the sum of its members by the number of the members, in this case 10.