Question

If the second term of a g.p. be 18 and its sixth term be 1458 then find the first term, common ratio and the g.p.

Answer 1

Answer:

First term (a) = 6

Common ratio (r) = 3

G.P - 6,18,54....

Step-by-step explanation:

Nth term in gp -

A=ar^(n-1)

Where 'a' is first term and 'r' is common ratio

For 2nd term

18=ar...(i)

For 6th term

1458=ar^5...(ii)

Dividing (i) and (ii)

18/1458=1/r^4

r^4=81

r=3

Substitute r in (i)

a=6

The corresponding gp is -

6,18,54...

Answer 2

Answer:

First term= 6

GP = 6,18,54...

Step-by-step explanation is given in the page linker below you can ask for nay doubt if you have in this .

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