Set C is the set of two-digit even numbers greater than 72 that do not contain the digit 8.

[math_celebrity]

Set C is the set of two-digit even numbers greater than 72 that do not contain the digit 8.

First, two-digit numbers mean anything less than 100. Let's, list out our two-digit even numbers greater than 72 but less than 100.

C = {74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98}

The problem asks for numbers that do not contain the digit 8. Let's remove those numbers from the list.
C = {74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98}

C = {74, 76, 90, 92, 94, 96}