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OpenStudy (anonymous):
Find the sum for each arithmetic series 6+13+2027+...+97
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OpenStudy (anonymous):
use formula: 1+(n-1)d
OpenStudy (anonymous):
sorry i mean a+(n-1)d a being 1st number d is the difference n is how many there are
OpenStudy (anonymous):
what kind of series is that?
OpenStudy (anonymous):
arithmetic
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