Posted by **PLEASE HELP** on Monday, February 20, 2012 at 4:18am.

Will someone please explain and show

how to work this one:

How many different whole numbers can be made with the digits 5, 7, 8? For this problem, each different whole number may have 1, 2, or 3 digits and a digit may be repeated.

- MATH HELP -
**drwls**, Monday, February 20, 2012 at 4:51am
With one digit, there are three possibilities, 5, 7 and 8

With two digits, there are 3^2 = 9 possibilites:

55, 57, 58

75, 77, 78,

85, 87, 88.

With three digits, there are 3^3 = 27 possibilities.

3 + 9 + 27 = 39

## Answer this Question

## Related Questions

- math - How many different whole numbers can be made with the digits 5, 7, 8? For...
- Math - How can you order three whole numbers with different numbers of digits ...
- Math Help Please - Can you Please explain the answer that I received of 2469? It...
- Math - Explain It: Which is greater, the greatest whole number with 5 digits or ...
- Math - Received answer to the following question from Jishka. (2469) Would you ...
- Math - Writing to Explain: Which is greater, the greatest whole number with 5 ...
- Statistics - One item on a questionnaire asks, "How many siblings (brothers and ...
- Math - I am a 5-digit whole number. I have 4 different digits. There are no 7s ...
- Math - What are irrational, rational, and natural numbers? A rational number is ...
- Math- Mixed Numbers - 1. White 17/4 as a mixed number. Hi, could someone please ...

More Related Questions