C={z | z is an even integer greater than 26 and less than or equal to 30}

and

Step-by-step explanation:

Let's understand what the question is asking.

"A value C is equal to the value of z such that the value z is an even integer greater than 26 and less than or equal to 30."

The only even values in this range:

are 28 and 30. The reason why 30 is included is because z is an integer greater than 26 and less than or equal to 30.

So your answer would be:

and

You can also write it as:

C = {28, 30} if asked to answer in set notation.

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