probabilities and statistics: tickets numbered 1 - 50 in box

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dedwards

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tickets are numbered 1 to 50 and placed in a box. Three tickets are drawn at randon without replacement. what is the probability that their numbers are all greater than 25?

(1/50)(25/25) is this how you would start off?
 
Re: probabilities and statistics...

dedwards said:
tickets are numbered 1 to 50 and placed in a box. Three tickets are drawn at randon without replacement. what is the probability that their numbers are all greater than 25?

(1/50)(25/25) is this how you would start off?
Click to expand...

For the first draw how many tickets are there greater than 25 (25 out of 50)

For the second draw how many tickets are there greater than 25 (24 out of 49) - 1 ticket # greater than 25 has been drawn and has not been replaced

For the third draw how many tickets are there greater than 25 (?? out of ??) - 2 tickets # greater than 25 has been drawn and has not been replaced

So what is the combined probability?
 
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