Microsoft's Minecraft Set to Launch its Own Currency. by. Microsoft Corp. is adding a new marketplace -- and a brand new currency -- within the video-game Minecraft, opening up the opportunity for businesses to sell their original content and creations to tens of millions of the gameâs players for the first time.
In combinatorics, the rule of sum or addition principle is a basic counting principle. Stated simply, it is the idea that if we have a ways of doing something and b ways of doing another thing and we can not do both at the same time, then there are a + b ways to choose one of the actions.
So far we have used two different equations for counting the elements in the union of two sets: . n(S âª M) = n(S) + n (M) and n(V âª P)= n(V) + n(P) â n(V â© P) Both equations are illustrations of the ADDITIONS PRINCIPLE (FOR COUNTING). Addition Principle (for counting) 1.) For any two sets of A and B, .