Posted by **Anna** on Sunday, November 15, 2009 at 10:48pm.

The serial number on a $10 bill contains eight non-zero digits. If you $10 bill contains the digit 7 at least once, you win a prize. The probability that your $10 bill will be a prize-winning bill is?

- Probability -
**economyst**, Monday, November 16, 2009 at 1:37pm
Without a zero, there must be 9^8 number of possible digits. Further there must be 8^8 possible digits that exclude both zero and 7. So, the probability at at least one seven appears is 1.-((8^8)/(9^8))

## Answer this Question

## Related Questions

- Probability - The serial number on a $10 bill contains eight non-zero digits. If...
- Math - A box contains a one-dollar bill, a five-dollar bill, a ten-dollar bill, ...
- Math - A box contains a one-dollar bill, a five-dollar bill, a ten-dollar bill, ...
- Math - Jill and Bill are two members of the Hill family. Jill is 8 years old and...
- Algebra - Tom has a $20 bill, a $10 bill, a $5 bill, and $1 bill. List the total...
- goverment - Which term is applied to a legislator who introduces a bill? ...
- probability - Assume that there is an urn containing seven $50 bills, six $20 ...
- English - Which of the following sentences is grammatically correct? a.Only Bill...
- finite math - Suppose that a 4-digit pin number is to be formed with the digits ...
- Probability - 1. You roll a number cube numbered one to six 12 times. P(5)=2/3. ...