<PRE><B>Question 1100939</B>
How many different arrangements of three boxcars can be selected from eight boxcars for a train? The order is important since each boxcar is to be delivered to different locations.
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Ans: 8P3 = 8!/(8-3)! = 8*7*6 = 336 arrangements
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How many combinations of four objects are there taken two at a time?
Ans: 4C2 = (4*3)/(1*2) = 6
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Cheers,
Stan H.
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