SOLUTION: How many 7 digit phone numbers are avaliable if the first three digitd sre either 345, 286 or 329

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Question 355699: How many 7 digit phone numbers are avaliable if the first three digitd sre either 345, 286 or 329
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
From 345-0000 to 345-9999, there are 10,000 numbers.
Since there are three first number pairs, that makes a total of 30,000 total numbers.