A workshop in Florida for 2009 Math Kangaroo Competition.
Visit Math Kangaroo webpage for registration and information about the competition: www.mathkangaroo.org
The combination for opening a safe is a three – digit number made up of different digits. How many different combinations can you make using only digits 1, 3, and 5?
A) 2 B) 3 C) 4 D) 5 E) 6