Question

write the set x = {12,15,18,21,24} as a set builder form

Answer 1

Answer:

Set builder form is $X=\{x:x\ is\ a\ multiple\ of\ 3,\ 12\leq x\leq 24\}$

or $X=\{x:x=3n, n\ is\ a\ natural\ number,\ 4\leq n\leq 8\}$

Step-by-step explanation:

Simply by examining the set we can find that the numbers are the consecutive multiples of three,

and hence we can built it by the two ways as mentioned in the answer

thank you