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In a different plan for area​ codes, the first digit could be any number from 0 through 4​, the second digit was either 1 1 or 2​, and the third digit could be any number except 5, 6 or 7. With this​ plan, how many different area codes are​ possible?

User Joetjah
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70 possible solutions. 0,1,2,3,4 there are 5 numbers 11,2 there are 2 numbers and 7 numbers for digit 3. 5x2x7=70
User Don Hosek
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