Posted by **ken** on Sunday, October 19, 2008 at 1:28pm.

i asked a question yesterday and i got an answer. my question was how many 7 digit numbers can be formed with the numbers 1,2,4,7 if

a) repetation is allowed

b) repetation is not allowed

i got an answer but i needed 2 answers and im not sure if the answer was for a or b

## Answer this Question

## Related Questions

- math - how many 7 digit numbers can be formed with the numbers 1, 2, 4, 7. (they...
- Math - How many different numbers can be formed fro the set of seven numbers (1,...
- math - What do we call the numbers that cannot be arranged into 2-row arrays? I ...
- Math - My nephew is in the 4th grade and asked me to help him answer this ...
- algebra - Consider making a four-digit I.D. number using the digits 3,5,8, and ...
- Math (Reiny) - Regarding my question below, when the question talks about digits...
- statistic & probability - How many 5 digit numbers can be formed using the ...
- math - How many 4-digit numbers can be formed using the numbers 5, 6, 7 and 8? ...
- Math- factors - I asked this question previously, but I was told you were unable...
- math - how many seven digit numbers can be formed with the digits 1,2,4,7 if NO ...

More Related Questions