Question

Find the 12th term of the geometric sequence 4, 8, 16, ...

Answer 1

2^(n+1)

1st term ----> n=1 = 2^(1+1) = 2^2 =4

2nd term ----> n=2 = 2^(2+1) = 2^3 =8

3rd term ----> n=3 = 2^(3+1) = 2^4 =16

like this,

12th term ----> n=12 = 2^(12+1) = 2^13 =8192

Explanation: