Question

Answer the 4th term of g.P is square of ts second term and the first term is -3 then 7th term of the g,p is ?

Answer 1

4th term=-3r^3

2nd term=-3r

SO,

-3r^3=(-3r)^2

or,-3r^3=9r^2

or,-r^3=3r^2

or,r=-3

therefore

7th term=ar^6

=-3×(-3)^6

=-3×729

=-2187

so,7th term = -2187