Question

HELP I NEED SOMEBOBY HELPPPP

Answer 1

`a_(12)` =
`(1)/(8)`

Explanation:

Given the terms

256, 128, 64, 32

These are the terms of a geometric sequence with common ratio r and

n th term = a
`(r)^(n-1)` ← a is the first term

here r =
`(128)/(256)` =
`(64)/(128)` =
`(1)/(2)` and a = 256

Hence

`a_(12)` = 256 ×
`((1)/(2)) ^(11)`

= 256 ×
`(1)/(2048)` =
`(1)/(8)`