Ask
your own question, for FREE!
Mathematics
18 Online
OpenStudy (anonymous):
how many different 7-digit telephone numbers can be made if the first digit cannot be 7,8, or 9
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
you start with 6543210
OpenStudy (campbell_st):
so how many choices for the 1st digit...?
OpenStudy (anonymous):
multiply them and thats your ans
OpenStudy (anonymous):
nevermind I think im wrong :P
OpenStudy (anonymous):
7
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
there are 7 choices for the first digit
OpenStudy (campbell_st):
great and are you happy there and 10 choices for each of the other digits..?
OpenStudy (anonymous):
yes, so how do I solve this problem from there?
OpenStudy (anonymous):
also, sorry for the late reply
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
VERNEISH:
Two objects are moving along separate linear paths where each path is described by position, d, and time, t.
Maci:
what are the best stock apps for people who want to start investing?
Twaylor:
genuienly how do i get better self control i keep watcing youtube and theres this
IzzyCookie:
|dw:1792074056138:dw| Uhm, I don't know where to ask this, but I'm in college welding at my community college, and I need help learning vertical welding for
thehearken:
not sure if this is considered spam, im sorry if it is, but does anyone have tips
VERNEISH:
Two objects are moving along separate linear paths where each path is described by position, d, and time, t.
12 hours ago
0 Replies
0 Medals
Maci:
what are the best stock apps for people who want to start investing?
4 days ago
3 Replies
2 Medals
Twaylor:
genuienly how do i get better self control i keep watcing youtube and theres this
1 week ago
3 Replies
0 Medals
IzzyCookie:
|dw:1792074056138:dw| Uhm, I don't know where to ask this, but I'm in college welding at my community college, and I need help learning vertical welding for
2 days ago
9 Replies
1 Medal
thehearken:
not sure if this is considered spam, im sorry if it is, but does anyone have tips
1 week ago
2 Replies
1 Medal