A few years ago, telephone area codes in the us and canada?

consist of 3 digits. ( maryland was 301, VA was 703 and DC was 202). The first digit in the area code was from 2-9. The second was either 0 or 1 and the third could be any digit except 0.



A) how many different area codes begin with the digit 3



B)How many different area codes ended with the digit 2



C) How many different area codes were possible?A few years ago, telephone area codes in the us and canada?
Using your rules:

A) 1*2*9 = 18 different area codes that begin with 3

B) 8*2*1 = 16 different area codes that end with 2

C) 8*2*9 = 144 different area codes possible



More trivia on area codes - When area codes were first created in 1947, densly populated areas received area codes that had the least amount of clicks on a rotary phone (hence New York is 212, LA is 213, Chicago 312, the three that have lowest amount of clicks)

Also - you could only end in 1 if the middle digit was 0, which the poster did not mention.



Edit: fixed LA and Chicagos area code by switching them %26gt;_%26gt;A few years ago, telephone area codes in the us and canada?
This person before me is incorrect. Maybe their math is right but.... Downtown and near downtown chicago is 312.... not 213A few years ago, telephone area codes in the us and canada?
A)18

B)16

C)8*2*9=144 possible area codes