Question

____, 27, 9, 3

Answer 1

Each next value represents the previous value divided by three. 27 divided by 3 results in 9, while 9 divided by 3 results in 3. This way, you can set up a simple little expression.

x/3 = 27

Now solve for x.

(x/3)*3 = 27*3
x=81

Answer 2

notice that each term is the term before it, just divided by 3.

So to get the first term, the number before 27, just multiply 27 by 3, you get 81.

Answer 3

3^4 , 3^3 , 3^2 , 3^1
81 , 27 , 9 , 3
ans is 81