+1+2+3+4+5+6+7+8+9+10

55

Step-by-step explanation:

First of all, there are easy ways to do this. Start by adding the largest number and smallest number, second largest, and second smallest, and continue on. Each combination of numbers is 11, and a combination has two numbers in it. Divide the ten numbers by 2 to get 5 sets, which equals 11. Multiply 11 by 5 to get 55.

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step-by-step explanation:

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look at the picture i have filled out a table for it. hope this .