find the next four terms. 3, 9, 27, 81, ..... (1 mark)

(ii) 3, 9, 27, 81, ..... (1 mark)

Sol. t₁ = 3¹ = 3

t₂ =3²  = 9

t₃ = 3³ = 27

t₄ = 3⁴ = 81

t₅ = 3⁵ = 243

t₆ = 3⁶ = 729

t₇ = 3⁷= 2187

t₈ = 3⁸ = 6561

∴  The next four terms of the sequence are 243, 729, 2187 and 6561.