what is th easiest method i can use to any solve question on set theory?

Answer 1

There are certain principles that will help in any kind of proof. Some of these are thinking backwards and divide and conquor by the pigeonhole principle. I was just reading a good article about this...
http://www.artofproblemsolving.com/Resources/AoPS_R_A_HowWrite.php
see also...
http://zimmer.csufresno.edu/~larryc/proofs/proofs.html

Answer 2

not all note issues are a similar difficulty. regardless of the indisputable fact that, try to be ready to sparkling up hardship-free note issues via having conscious of a few hardship-loose formulae. Examples contain: cost: total = cost * time (the position cost is # of contraptions per era of time) Optimization: Take by-product of output function.(calculus) you ought to practice translating tale issues into equations and fixing different equations in numerous unknowns.you ought to decide on to study some possibility thoughts jointly with independence and Bayes theorems in case you opt on to sparkling up a number of those issues.