Q37 of 74 Page 9

(a) a = , r = 3/ =
(b) a = , r =


(a) a = , r = 3/ =

Let 729 be the nth term of the G.P.

an = arn-1

729 = ()n-1

()12 = ()n

n = 12

Therefore 729 is the 12th term of the G.P.

(b) a = , r =

Let be the nth term of the G.P.

an = arn-1

=

=
n = 9

Therefore 1/19683 is the 9th term of the G.P.

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