Friday

April 18, 2014

April 18, 2014

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

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 4:51amWith 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

**Related Questions**

math/ algebra 1 - can someone please help me explain how they got this answer ...

algebra 1 - a number is less than one fourth of the sum of three times the ...

math - can someone please explain/show how to do this? im really stuck with ...

Maths-can someone explain something to me??? - hey, can someone explain vectors ...

math 012 please help explain - can someone please help explain how to do this ...

Math SOmeone please please help - Find the derivative of the function. g(u) = (5...

math - Can someone please show us how to show 1500 x 2.1? I can not for the life...

Algebra - Can someone explain to be how to put (x/ (x^2-4)) in another form... ...

Algebra - Can someone explain to be how to put (x/ (x^2-4)) in another form... ...

year 8 re-Re teachers - i posted this question before but can`t see it on the ...