{a,c,d,e}?{c,d,f,h}

[monicaisabel2]

Hi. I am completly lost on how to even start this problem . please help me. thank you so much



{a,c,d,e}?{c,d,f,h}

 

[Deleted member 4993]

Hi. I am completly lost on how to even start this problem . please help me. thank you so much



{a,c,d,e}?{c,d,f,h}

What does the symbol - ? - mean to you?

 

[monicaisabel2]

I am not even sure. I was given this problem with no directions what so ever.

 

[Deleted member 4993]

Sounds like you took a l-o-o-o-ng peaceful nap in the class during discussion (or you cannot find your textbook). Anyway, for a quick refresher, go to:

http://en.wikipedia.org/wiki/Union_%28set_theory%29