How many different three-digit odd numbers can be formed using the digits 3, 4, 5 and 6 if digits can be repeated?
In order for a number to be odd, the units digit must be 1,3,5,7, or 9.
For number with digits being 3,4,5, and/or 6, to be odd, the units digit must be 3 or 5.
This means that there are only 2 choices for the units digit: 3 and 5.
There are 4 choices for the tens digit: 3,4,5,and 6.
There are 4 choices for the tens digit: 3,4,5, and 6.
2*4*4=32
There are 32 three-digit odd numbers that can be formed with 3,4,5 and 6.
