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

Vijay
63 Points
2 months 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