If x is 1, 2, 3 or 4 and y is 2, 4 or 8, then the product xy can have how many different possible values?

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问题 If x is 1, 2, 3 or 4 and y is 2, 4 or 8, then the product xy can have how many different possible values?

选项 A、twelve
B、eleven
C、nine
D、seven
E、eight

答案E

解析 1×4=2×2，1×8=2×4=4×2，2×8=4×4，因此还需要减去4，共有8种值。

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