Question

6.
Find the common ratio of a G.P. whose nth term is 3(2n-1).
​

Answer 1

SOLUTION

TO DETERMINE

The common ratio of a G.P. whose nth term is 3(2n-1)

EVALUATION

Here it is given that in the given GP nth term is 3(2n-1)

Putting n = 1 , 2 we get first term and second term

First term = 3 ( 2 - 1 ) = 3

Second Term = 3( 4 - 1 ) = 9

Hence common ratio

$\displaystyle \sf{ = \frac{Second \: Term }{First \: term} }$

$\displaystyle \sf{ = \frac{9 }{3} }$

$= 3$

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