Question

In a different plan for area codes, the first digit could be any number from 1 through 7, the second digit was either 4, 5, 6, or 7, and the third digit could be any number

except 2. With this plan, how many different area codes are possible?

Answer 1

There are 280 different possible area codes.

In a different plan for area codes, the first digit could be any number from 1 to 7. so, the first digit has 7 ways to place. the second digit was either 4, 5, 6, or 7. so, there are 4 ways to place. the third digit could be any number from 0 to 9. so there are 10 ways to place it. accordingly, we have

               $7*4*10=280$

different possible area codes. on multiplying 7 and 10 we get 280. so there are 280 ways to create area codes according to your choice.

To learn more about different possible area codes click on,brainly.com/question/2103482

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