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Nnesha (nnesha):
formula to find sum of the geometric sequence \[\huge\rm S_n = \frac{ a_1(1-r^n) }{ 1-r }\] r= ratio n= number of term a_1 = first term
Nnesha (nnesha):
do you know how to find common ratio ?
Nnesha (nnesha):
how did you get that ?
Nnesha (nnesha):
yes.
Nnesha (nnesha):
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