Question

2,4 ,8,16....12 terms to n terms of geometric series

Answer 1

18 is the answer because 2×2=4×2=8×2=16
=16 ÷12
4/3

Answer 2

So,

I'm assuming that the question is either to find the 12 th term of the G.P or to find sum upto 12th term

Now,

a=2

r= 4/2

r=2

So,

t12 = 2 (2)^(12-1)

t12=2×2^11

t12=2^12

t12 = 4096

Form, the sum upto 12th term

S12= 2((2)^11 - 1)/(2-1)

S12=8190

These may be your required solutions