What is the importance of humanities in our life and society?

What are the types of e-content most useful for teaching?

What skills do teachers need?

Why is it important for teachers to have an understanding of child development?

What was the first known association formed to improve the Assamese language and literature?

There are almost 8 million possible seven-digit phone numbers per area code.

Each area code has 792 possible prefixes or NXX codes (for example, NXX-XXXX or 555-1234), explains the Public Utility Commission of Texas. And each "NXX" has 10,000 possible phone numbers attached to it. So, with a little math, we know that theoretically, there are 7,920,000 possible seven-digit phone numbers in each area code. Obviously, not all of these numbers are put into use, so you don't have to try nearly 8 million numbers if you want to randomly dial a friend who lives nearby.