Set of even numbers

If A is the set of all divisors of the number 15.B is the set of prime numbers smaller than 10 and C is the set of even number smaller than 9, then find the value of (A uu C)nn B

Property 3 Square of even numbers are always even numbers and squares of odd numbers are always odd numbers.

The average of three consecutive even numbers is A. If next five even numbers are added, what is the average of these eight numbers?

If A is the set of positive divisors of the number 18;B is the set of prime numbers less than 12, and C is the set of even natural numbers less than 10, then (A uu B)nn C is

If B is the set whose elements are obtained by adding 1 to each of the even numbers , then the set builder notation of B is

Cube of an even number is even.

The sum of two even number is an even number.

If x is an even number, then the next even number is 2(x + 1).