Question

the 4th term of a G.P. is square of its second term,and the first term is -3. Determine its 7th term

Answer 1

let the common ratio be r

ist term = -3

4th term = -3r^3

2nd term = -3r^1 = -3r

ATQ

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

-3r^3 = 9r^2

r = -3

7th term = -3(-3)^6 = -3 ( 729 ) = -2187

Answer 2

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