Question

Let A = {x / x ∈ N, x is a composite number, x < 9}, then A =
please help :(​

Answer 1

Answer:

We have to identify the type of set.

Given B={x∣xisacompositenumberlessthan5}

We know that, A composite number is a positive integer which is not prime (that is, which has factors other than 1 and itself).

In a set of numbers less than 5, the only number which has factors other than itself and 1 is 4.

∴B={4} which is a singleton set.

Hence B is a singleton set.