If in a geometric progression \[\left\{ {{a}_{n}} \right\},\ {{a}_{1}}=3,\ {{a}_{n}}=96\] and \[{{S}_{n}}=189\] then the value of \[n\] is

If in a geometric progression \[\left\{ {{a}_{n}} \right\},\ {{a}_{1}}

1.	If in a geometric progression \[\left\{ {{a}_{n}} \right\},\ {{a}_{1}}=3,\ {{a}_{n}}=96\] and \[{{S}_{n}}=189\] then the value of \[n\] is
A.	5
B.	6
C.	7
D.	8
Answer» C. 7

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If in a geometric progression \[\left\{ {{a}_{n}} \right\},\ {{a}_{1}}=3,\ {{a}_{n}}=96\] and \[{{S}_{n}}=189\] then the value of \[n\] is

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