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7 cars compete in a race and finish at different times. find
[#permalink]
14 Sep 2003, 13:31
14 Sep 2003, 13:31
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7 cars compete in a race and finish at different times. find the probability that prat who drives the blue car finishes ahead of martin who drives a red car?
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Re: 7 cars compete in a race and finish at different times. find
[#permalink]
14 Sep 2003, 20:47
14 Sep 2003, 20:47
praetorian123 wrote:
7 cars compete in a race and finish at different times. find the probability that prat who drives the blue car finishes ahead of martin who drives a red car?
Since there is no difference in the cars, each car will be equally likely to be ahead of the other.
1/2.
Re: 7 cars compete in a race and finish at different times. find
[#permalink]
14 Sep 2003, 21:12
14 Sep 2003, 21:12
But I think the statement is about one particular car finishing ahead of another specific car from the group so, the number of events is 6 and the total number of classifications would be 7!, therefore the answer may be
6/7! = 1/840
Am I right?
6/7! = 1/840
Am I right?
