Answer: There are 154 different meals that you can get with this offer.
Explanation:
The total number of combinations will be equal to the product of the numbers of options for each selection.
Here we know that:
"Buy a sandwich and get either a snack or a drink for free."
Then we have two selections:
Sandwich, where we have 11 different types.
Snack or a drink (we can choose only one) there are 9 options for snacks, and 5 options for drinks, then there is a total of 9 + 5 = 14 options.
The total number of different combinations is:
Combinations = 11*14 = 154
There are 154 different meals that you can get on the offer.