Collection of six coins
Assume that we have a collection of six coins, exactly one of which is counterfeit and weighs less than each authentic coin. Use a decision tree to describe a method for identifying the counterfeit coin using two weighings of a balance scale.
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A plane flies 465 miles with the wind and 345 miles against wind in the same length of time. If the speed of the wind is 20 mph find the speen of the plane in still air.
A farmer has 336 running feet of fence and wishes to form rectangular pasture. one side of the pasture will be bounded by a very long wall, so no fencing material will be needed for that side of the pasture. what should the dimensions of the pastu
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Determine the number of ways to put eight different books in five boxes, if no box is allowed to be empty
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