# Write the set A={3,6,9, ...∞} in set builder notation

Grade:12th pass

## 1 Answers

Vijay
48 Points
one year ago
Answer –  { x : x = 3y , y $\epsilon$ N and N $\geqslant$ 1  }    where N is Natural number.

Explaination -
3 = 3 x 1
6 = 3 x2
9 = 3 x 3 …........ so on . Therefore  x = 3y ( 3 times of y )

Thanks