(10)(10)(10)(10)=10<SUP>4</SUP>nancygaye said:A phone number consists of seven digits, the first 3 are the exchange. How many different phone numbers are possible within the 537 exchange?
Are you referring to the quote in pka's signature? If so, then try Googling "binary numbers" to find lessons on this topic. If not, please clarify.nancygaye said:and, I certainly don't! Can you explain?