Set D is the set of two-digit even numbers less than 67 that are divisible by 5

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Set D is the set of two-digit even numbers less than 67 that are divisible by 5

two-digit numbers start at 10. Divisible by 5 means the last digit is either 0 or 5. But even numbers don't end in 5, so we take the two-digit numbers ending in 0:
D = {10, 20, 30, 40, 50, 60}