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Gauss's Trick for Adding 1+2+...+100

Author:
Regina Greiwe Jackson
Explore the visual representation of finding the sums: 1 1+2 1+2+3 1+2+3+4 ... 1+2+3+4+5+6+7+8+9+10 Or, in other words, finding the first 10 partial sums of the arithmetic sequence
Write a formula for each partial sum, and generalize this to the partial sum.

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