Solved

Find the Partial Sum of the Given Sequence $_ { 20 }$

Question 120

Multiple Choice

Find the partial sum of the given sequence.
-S $_ { 20 }$ of the sequence $\mathrm { a } _ { \mathrm { n } } = - 1 + 7 ( \mathrm { n } - 1 )$

A) 1380
B) 1310
C) 1245
D) 1035

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