Answer: 
9 is the answer .
Explanation:
Number of choices for Bread are 
wheat ,white or rye that is 3 breads 
likewise ham ,beef or turkey 
number of choices for meat = 3 
Number of ways of making different sandwiches are 
number of choices for for meat x number of choices for breads 
 3 x 3 = 9 
There are 9 different number of sandwiches using 3 different breads and 3 different meats.