Question

For the G.P., if 3rd term is 4 and product of 1st and 4th term is 1 then find fifth term.​

Answer 1

Step-by-step explanation:

Let the go is

a, ar, ar^2,ar^3

then ar^2=4 --------------1

a×ar^3=1 i. e. a^2r^3=1 ----------2

squaring 1st equation, a^2r^4=16 -------3

NOW, 3/1,

r=16 and a=1/64

Then fifth term ar^4=1/64×16×16×16×16=1024