Question 1138817: If there are 2 yellow, 3 purple, 1 pink, 2 orange, and 2 black marbles in a bag, find the
probability of randomly selecting a pink and a black marble.
Answer by ikleyn(52814)   (Show Source):
You can put this solution on YOUR website! .
Such problem, posed as a probability problem, must not only describe the content of a bag.
It must precisely describe the conditions of an experiment:
- how much marbles are taking out at once,
- with replacement or without it,
- and so on.
How this problem is presented, clearly shows that
- the problem is not from a textbook;
- somebody is trying to create his (or her) own problem, but has no qualification to do it correctly.
So, dear visitor, find an appropriate source/sources and learn the subject before trying to create your own problems.
H a p p y l e a r n i n g ! !
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