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2 articles trouvés pour ce sujet.
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Maple trees and pine trees |
2002-01-06 |
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A student pose la question :
A team of scientists found that in a forest there was four maple trees for every nine pine trees.How many maple were there if they counted 45 more pine than maples?
Penny Nom lui répond. |
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Is the tree a pine tree? |
2001-10-27 |
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Kate pose la question :
Suppose Stock Brokers tell the truth 2/5 of the time, and 1/3 of the trees in a given forest are Pine. If 4 Stock Brokers say that a certain tree in that forest is Pine, what is the probability that the tree is indeed a Pine tree?
Penny Nom lui répond. |
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