Question

find 8th term of 72, -18, 9/2, -9/8​

Answer 1

Answer:

t₈ = -(9/2048)

Step-by-step explanation:

a = 72

r = t₂/t₁ = -18/72 = -1/4

in a G.P, tₙ = arⁿ⁻¹

        => t₈ = 72(-1/4)⁸⁻¹

                 = 72(-1/4)⁷

                 = -72/(4)⁷

                 = -72/16384

                 = -9/2048