How many different zip codes are there


Asked by maham237 @ in Social Studies viewed by 297 People


How many different Zip Codes are possible using the old style (five digits) and the new style (nine digits)?

Answered by maham237 @



Answer:

old style (five digits)

Solution: 10×10×10×10×10=105

the new style (nine digits)

Solution: 10×10×10×10×10×10×10×10×10=109 the old style if it cannot start with a zero

Solution: 9×10×10×10×10=9×104 =90,000


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