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# Postage Stamps

Go to solution Solved by Pickett,

## Question

Suppose the post office only sold 5 cent and 7 cent stamps.  Now, if the amount of postage on your mail had to be a precise amount equivalent to double of the distance (e.g. sending a letter five miles costs ten cents), what whole number locations are you not able to mail to?

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• Solution
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1, 2, 3, 4, 8, 9

Edited by Pickett
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1,2,3,4,8,9,10 (miles)

Any cost >= 24 cent will can pay by two kind of stamps

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