Answer:
990 different pizzas
Explanation:
First, consider the choices for crust, cheese, protein, and vegetables. There are 3 crust types, 6 cheese types, 5 protein options, and 11 vegetables.
Second, multiplying these numbers together gives 990 possible combinations. If at least one vegetable is chosen, there are 990 different pizzas.
Therefore, there are 990 different pizzas.