Ent 4 Problem 2 5 A While Back All Three Digit Area Codes Used For Telephones In Canada Satisfied The Conditions A 1 (263.57 KiB) Viewed 29 times
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ENT 4 Problem 2 (/5) A while back, all three-digit area codes used for telephones in Canada satisfied the conditions: (a) The first digit could not be a 0 or a 1. (b) The second digit had to be a 0 or a 1. (c) The third digit could not be a 0. (d) The third digit cod be 1 only if the second digit was 0. How many possible area codes were there? Solution MATH
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