Question

write the builder form of {3,6,9,12}.​

Answer 1

Answer:

A={x/x is the multiple of 3}

Answer 2

Answer:

3=3*1

6=3*2

9=3*3

12=3*4 {x:x=3n,n€N,and 1is greater than equal to n is less than equal to 4} ans