Question

If A = {3,9,27,81}, then write A in the set builder form.
EN and x3​

Answer 1

Answer:

A={3^x, where x=1,2,3.... ie, x belongs to Natural nos.}

Answer 2

SOLUTION

TO DETERMINE

If A = {3,9,27,81}, then write A in the set builder form

CONCEPT TO BE IMPLEMENTED

SET

A set is a well defined collection of distinct objects of our perception or of our thought to be conceived as a whole

REPRESENTATION OF SET

A set can be represented in following ways

1. Roster or Tabular form

2. Set builder form

EVALUATION

Here the given set is

A = {3,9,27,81}

The given set in set builder form is

$\sf{A = \{ \: {3}^{n} : n = 1,2,3,4 \: \} \: }$

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