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  3. A linen shop has a certain tablecloth that is available in 8 sizes and 10 colors. What is the maximum possible number of differe

A linen shop has a certain tablecloth that is available in 8 sizes and 10 colors. What is the maximum possible number of differe

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问题 A linen shop has a certain tablecloth that is available in 8 sizes and 10 colors. What is the maximum possible number of different combinations of size and color available?
选项 A、9
B、18
C、40
D、80
E、90
答案D
解析 一亚麻布商店有某种桌布，这种桌布共有8种尺寸10种颜色，问最多可以有多少种尺寸与颜色的不同组合?
解：本题的正确答案为(D)。组合的实质是分别从8种尺寸和10种颜色中各选出一个，因此共计有80种选法，即每一种尺寸都有10种颜色与之相配，所以共有8×10=80种不同的组合。
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