Answer
z, z+2, and z+4.
Work Step by Step
All even numbers are 2 units apart.
Thus, if the first number is z, the second number is z+2, and the third number is z+2+2, or z+4.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.