Question

Hi me and my friends are making a project about 'Pros and cons of different subjects' and i was wondering if yall could write cons about different subjects like physics,chemistry,history etc because we already wrote about pros and we really need help​

Answer 1

if A={5,10,15}and B={1,3,15} subsets of u ={1,3,5,10,15,20} find a (AUB)