Question: let a1,a2,a3,...,an,... be a geometric sequence with common ratio r. Find S7 a 1 =3 a7 = 192 r = 2 s7 = ?

let a1,a2,a3,...,an,... be a geometric sequence with common ratio r. Find S7

a 1 =3

a7 = 192

r = 2

s7 = ?

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