Asandwich shop sells 4 kinds of sandwiches. each sandiwch comes with either chips, coleslaw, or baked beans. how many different choices are there.

This is like trying to find out a 4 digit code but with only 7 numbers.

The question states that there are 4 kinds of sandwiches so we will make 4 sandwiches

salami

cheese

baloni

pastrami

We have 12 different choices of sandwich with side.

salami - chips

salami - coleslaw

salami - baked beans

cheese - chips

cheese - coleslaw

cheese - baked beans

baloni - chips

baloni - coleslaw

baloni - baked beans

pastrami - chips

pastrami - coleslaw

pastrami - baked beans

PS: did you know that there is exactly 10,000 pssible combinations in a 4 digit code with 10 numbers starting at 0000 all the way to 9999