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单选题
Terry is having lunch at a salad bar. There are two types of lettuce to choose from, as well as three types of tomatoes, and four types of olives. He must also choose whether or not to hare one of the two types of soup on the side. If Terry has decided to hare the salad and soup combo and he picks one type of lettuce, one type of tomato, and one type of olive for his salad, how many total options does he have for his lunch combo?
A
9
B
11
C
24
D
48
E
54
参考答案
参考解析
解析：
根据全概率公式可知，组合数=2×3×4×2=48，故本题选择D项。
根据全概率公式可知，组合数=2×3×4×2=48，故本题选择D项。
更多 “单选题Terry is having lunch at a salad bar. There are two types of lettuce to choose from, as well as three types of tomatoes, and four types of olives. He must also choose whether or not to hare one of the two types of soup on the side. If Terry has decided to hare the salad and soup combo and he picks one type of lettuce, one type of tomato, and one type of olive for his salad, how many total options does he have for his lunch combo?A 9B 11C 24D 48E 54” 相关考题
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