If A = {1, 2, 3, 4, 5} and B = {3, 6, 9, 12, 15}, what is A union B?

{1, 2, 3, 4, 5, 6, 9, 12, 15}

{3}

{1, 2, 3, 3, 4, 5, 6, 9, 12, 15}

{ }

Question

If A = {1, 2, 3, 4, 5} and B = {3, 6, 9, 12, 15}, what is A union B?

{1, 2, 3, 4, 5, 6, 9, 12, 15}

{3}

{1, 2, 3, 3, 4, 5, 6, 9, 12, 15}

{ }

amistre64 · Answer

union means to put all the stuff into one big kettle

amistre64 · Answer

no doubles tho

anonymous · Answer

A union B is often translated as A or B because the element belongs in the union if it is in set A or in set B or in both.  Which one is it?  I'll wait and help if you are wrong. :})

buttermequeasy · Answer

The first one? {1, 2, 3, 4, 5, 6, 9, 12, 15}

anonymous · Answer

yep; it is not the third because as amistre write no repeats

buttermequeasy · Answer

Thank you!

anonymous · Answer

ab=1,2,3,4,5,6,9,12,15 becuse you have to put them together

anonymous · Answer

ur welcome!