A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
How many 7 digit phone numbers can be formed if the first digit cannot be 0 or 1?
 2 years ago
How many 7 digit phone numbers can be formed if the first digit cannot be 0 or 1?

This Question is Closed

imranmeah91
 2 years ago
Best ResponseYou've already chosen the best response.4well, let's write out each posibility for each digit and then multiply

GOODMAN
 2 years ago
Best ResponseYou've already chosen the best response.0I was told to use the Counting Principle

imranmeah91
 2 years ago
Best ResponseYou've already chosen the best response.4first one can't be 0 or 1 , so we got only 8 possibilities

imranmeah91
 2 years ago
Best ResponseYou've already chosen the best response.4the other digits have 10 possibilties so we multiplies them all

GOODMAN
 2 years ago
Best ResponseYou've already chosen the best response.0Okay, so we delete 2 outta the 10 possibliity.

imranmeah91
 2 years ago
Best ResponseYou've already chosen the best response.4like Ryan did above

lgbasallote
 2 years ago
Best ResponseYou've already chosen the best response.2you're not planning on stalking someone are you @GOODMAN /:) he

GOODMAN
 2 years ago
Best ResponseYou've already chosen the best response.0Wait, how do we know that the others have 10 possibilities, doesnt it apply to the others as well?

imranmeah91
 2 years ago
Best ResponseYou've already chosen the best response.4well, only first digit can't be 0 or 1 ; other digits can be any number from 0 to 9

GOODMAN
 2 years ago
Best ResponseYou've already chosen the best response.0I need help with one more if you dont mind..

GOODMAN
 2 years ago
Best ResponseYou've already chosen the best response.0A photographer is taking a picture o f a bride and groom together with 6 attendants. How many ways can he arrange the 8 people in a line if hte bride and groom stand in the middle?

imranmeah91
 2 years ago
Best ResponseYou've already chosen the best response.4little help with photographer problem

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.0ok ____, ___, ____, B G ____, ____, _____

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.0that looks right to me

agreene
 2 years ago
Best ResponseYou've already chosen the best response.0what all of a sudden this has to be in base 10?

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.0this might surprise you and this might amaze you

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.0but i am going to knock out joe frazier !

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.0btw it is \[6!=6\times 5\times 4\times 3\times 2=720\]

GOODMAN
 2 years ago
Best ResponseYou've already chosen the best response.0Yea, i knw what factorials are, but whats is Joe Frazier got to do with this, lol.

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.0Float like a butterfly, sting like a bee

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.0His hands can't hit what his eyes can't see.

lgbasallote
 2 years ago
Best ResponseYou've already chosen the best response.2he beat muhammad ali....
Ask your own question
Ask a QuestionFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.