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There are 3 green cups, 4 red cups and 5 blue cups. What is the probability that at the top of the stack that there will not be a green cup

Respuesta :

That is easy you have to had up all the numbers so therefore it would be

3+4+5=12

So there is 3 green cups, you would do 5/12 

So the answer would be 5/12


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