what is the sumof the series?
20 n-1 (5-n)
A.-220
B.-110
C.-95
D.110

what is the sumof the series?
20 n-1 (5-n)
A.-220
B.-110
C.-95
D.110

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Just to double check, the series is this: \[20 n-1 (5-n)\]Yes?

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