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Mathematics 17 Online
OpenStudy (anonymous):

You have a bag containing 26 tiles, each imprinted with one letter of the alphabet. If you pick out 5 tiles, what is the probability that they are a, e, i, o, and u in that order?

OpenStudy (whpalmer4):

pretty darn small :-)

OpenStudy (whpalmer4):

What is the probability that the first tile you draw is "a"?

OpenStudy (whpalmer4):

The problem is a bit unclear on a very important point: after picking a tile, is it kept out of the bag, or returned to the bag, such that it might be chosen again?

OpenStudy (anonymous):

that's what the question was pointed to as smh

OpenStudy (whpalmer4):

It doesn't mean we can't solve it, but you may have to make an assumption or interpretation of what it means.

OpenStudy (anonymous):

I think it would be 1/26

OpenStudy (whpalmer4):

that's right. Now, here's where the question comes up — if we put that tile back, the probability for each draw is again 1/26. However, I think probably the question means that we draw 5 successive tiles without replacement, so the probability of drawing "e" for the second tile is 1/25, and so on, and they are dependent events. How do you combine the probabilities for dependent events?

OpenStudy (anonymous):

I need help with that

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