arielcamachoaz97 arielcamachoaz97

28-02-2020
Mathematics

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Evaluate the geometric series 1 + 6+ ... + 7776.

Respuesta :

ooblecksrm ooblecksrm

28-02-2020

Answer:

9331

Step-by-step explanation:

clearly, r=6

So, if there are n+1 terms, 6^n = 7776

n = 5

S6 = a(r^6-1)/(r-1) = 1(6^6-1)/(6-1) = 46655/5

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