How many 7 digit phone numbers can be formed if the first digit cannot be 0 or 1?

How many 7 digit phone numbers can be formed if the first digit cannot be 0 or 1?

Hey! We 've verified this expert answer for you, click below to unlock the details :)

I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!

well, let's write out each posibility for each digit and then multiply

I was told to use the Counting Principle

first one can't be 0 or 1 , so we got only 8 possibilities

Looking for something else?

Not the answer you are looking for? Search for more explanations.

## More answers

Looking for something else?

Not the answer you are looking for? Search for more explanations.