Question

If A = {2, 4, 6, 8, 10} and B = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, what is A union B?
a. {2, 4, 6, 8, 10}
b. {1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 8, 8, 9, 10, 10}
c. {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
d. { }

Answer 1

what set do we get when we unite A and B together?

Answer 2

A?

Answer 3

is 1 in set B?

Answer 4

Yes

Answer 5

then when we unite the sets, shouldnt it be in the combined set as well?

Answer 6

OOOOh so it is b?

Answer 7

b is ALMOST it. we do not care for the number if same items, so duplicating the elements is not proper.

Answer 8

Oh alright

Answer 9

Then c?

Answer 10

sounds like a guess :) but yeah

c defines all the elements of A and B combined (united) and is properly defined so that duplication of elements is avoided.

Answer 11

I understand it now I Appreciate the help :)

Answer 12

good luck