ZIP codes. An eight-digit code is used to distinguish between different regions. The code uses numbers between
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ZIP codes. An eight-digit code is used to distinguish between different regions. The code uses numbers between 1 and 9, inclusive.
a. How many different codes are available for use?
(Assume that any eight-digit number can be used as a code.)
b. The first three digits of a code for a particular region are 333. If no other region has these first three digits as part of its code, how many codes can exist in this region?
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Related Book For
Statistics Plus New Mylab Statistics With Pearson Etext Access Card Package
ISBN: 978-0134090436
13th Edition
Authors: James Mcclave ,Terry Sincich
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