SOLUTION: In a plan for area codes , the first digit could be any number from 0 through 6 , the second digit was either 1,4 or 7. With this plan how many different area codes are possible?
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Question 1004584: In a plan for area codes , the first digit could be any number from 0 through 6 , the second digit was either 1,4 or 7. With this plan how many different area codes are possible?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
If these are two-digit codes, the answer is 7 * 3 = 21 possible codes...
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