题目信息
If x and y are different prime numbers, each greater than 2, which of the following must betrue?
I $${x}+{y} \neq{91} $$
II x - y is an even integer.
III $$\frac{x}{y}$$is not an integer.
I $${x}+{y} \neq{91} $$
II x - y is an even integer.
III $$\frac{x}{y}$$is not an integer.
A:II only
B:I and II only
C:I and III only
D:II and III only
E:I,IIandIII
参考答案及共享解析

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正确答案:
E:I,IIandIII
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