Question

Whats the 8th term of 12,18,27

Answer 1

205.03125.

Explanation:

18/12 = 1.5

27/18 = 1.5

This is geometric with nth term = ar^(n-1)

Here first term a = 12 and common ratio r = 1.5, so

The 8th term = 12(1.5)^(8-1)

= 205.03125

Answer 2

THIS QUESTION IS SOLVED BY DOUBLE DIFFERENCE

8,12,18,27

DIFFERENCE NO. 1

12–8=4

18–12=6

27–18=9

DIFFERENCE NO. 2

6–4=2

9–6=3

FINALLY

4+9=13

13+27=40

ANSWER= 40