Question

The set $B=\{1,2,3,6,9,18\}$ can be written in the set builder form as

• A. B={All factors of 18}
• B. B is the set of all factors of 18
• C. B={x|x is a factor of 18}
• D. B={x|x is a multiple of 3}

Answer 1

Answer: (C)

B={x|x is a factor of 18}

We can notice that the elements of set B are factors of 18
Hence, $B=\left\{x|x\text{is a factor of 18}\right\}$.