Mathematics, 18.08.2021 17:40 arilions
1. How many area codes were possible before 1995
2. According to the post-1995 rules how many area codes are possible today?
3. According to these conditions, how many 7-digit numbers are possible in a single area code
4. Using your answers to the previous questions, determine how many 10-digit numbers are possible in North America.
Answers: 2
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1. How many area codes were possible before 1995
2. According to the post-1995 rules how many area...
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