Question

Mrs. Driffel drew Circle A and wrote in it all the positiveodd numbers through 11. She drew Circle B and wrote in itall the positive multiples of 3 from 0 through 12.53163121199АBMrs. Driffel wants to determine the union of the circles, thatis, all the numbers in either Circle A or Circle B.Which of these represents the union of the two circles?

Answer 1

circle A is

circle B is

the union is:

in which, each number must appears one time. Thats why 3 and 9 only appers one time in the union.