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Most phone numbers have seven digits after the area code, where each digit can be 0-9. How many different phone numbers can there be in one area code?
A) 10,000,000
B) 4,782,969
C) 282,475,249
D) 823,543
The Counting Principle states that the number of possible outcomes is equal to the product of the number of outcomes for each event. There are seven events, each with 10 possibilities.
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