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seen Apr 28 '11 at 20:05

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Apr
27
comment Inclusion-exclusion principle: Number of integer solutions to equations
Thank you everyone for your answers and comments. I managed to understand the problem.
Apr
25
awarded  Student
Apr
25
comment Inclusion-exclusion principle: Number of integer solutions to equations
Thanks for the reply! My main concern is how to get the union for sets where we don't know their elements, so thats what your 'first suggestion'. So how does one find the intersection between A1 and A2, or any other pairs (or triples)? What formula should I use? Everything makes sense until that part.
Apr
25
asked Number of solutions to an equation using the inclusion-exclusion principle
Apr
24
comment Inclusion-exclusion principle: Number of integer solutions to equations
Something I dont understand. Where does |S|=C(18,3) come from? Also, my main problem is how to use the inclusion exclusion principle on |A1∪A2∪A3∪A4|. I'm somewhat of a noob... Thanks for the reply! Just a little bit more input and it will sink in.
Apr
24
asked Inclusion-exclusion principle: Number of integer solutions to equations