A grocery store carries the same 8 flavors of 4 brands of yogurt. Every flavor for each brand is sold in single-serving and quart-sized containers. How many different brand/flavor/size combinations of yogurt does the store sell?

For each combination, choose one of 4 brands, 1 of 8 flavors, and 1 of 2 container sizes. Multiply these choices: 4 × 8 × 2 = 64, so the store sells 64 different brand/flavor/size combinations. The correct choice is 64.

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