Describe the universal set

The correct answer is the first option: "Universal set = set of numbers from 0 to 20."

Step-by-step explanation:

The universal set (U ) is the set of all elements under consideration:

U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 10, 20}

B = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20}

C = {1, 3, 5, 7, 9, 10, 11, 13, 15, 17, 19, 20}

Basically everything inside the rectangle, including the zero outside the venn diagram, are included in the universal set.

you would need to know all the numbers that are on there

step-by-step explanation: