Question

{1,3,9,27,81} write in set builder ​

Answer 1

Answer:

set={1},{3},{9},{27},{81} is the set builder form

Answer 2

Answer:

{x : x = 3^n , 0≤n≤4 }

explanation :

take a look at the pattern.

1 = 3⁰

3 = 3¹

and so on...

so x is 3 raise to the power of n, where n is a whole number lesser than or equal to 4.