Post a New Question

ALGEBRA

posted by on .

Beginning in 1995, three digit area codes could begin with any number except 0 or 1. The middle and last number were not limited. How many area codes became available. I know the answer is 640 but I don't know how to explain that answer.

  • ALGEBRA - ,

    NEVERMIND, I used common sense

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question