Question 120952: So that zip codes may be machine readable, the postal service encodes them as a group five bars, some tall, some short, in groups osf five. In how many distinct ways can two tall and three short bars be arranged?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! So that zip codes may be machine readable, the postal service encodes them as a group five bars, some tall, some short, in groups osf five. In how many distinct ways can two tall and three short bars be arranged?
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# of ways to place the 2 short = 5C2 = 5*4/1*2 = 10
Once the 2 short are placed the three long can be placed in only one way.
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Ans: 10 ways
Comment: That would be the digits 0 to 9
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Cheers,
Stan H.
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