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A pizzeria offers pizza with tomato and cheese as a base. If a customer wishes, they may add toppings from the following options: ham, mushrooms, corn, and onion, each ingredient at most once. Every pizza is available in three sizes: small, medium, and large. How many different types of pizza can the customer choose from?

Final Answer:

n =  48

Step-by-step explanation:

$$\begin{gathered} a=2^4=16 \\ b=3 \\ n=a\cdot b=16\cdot 3=48 \end{gathered}$$

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