单选题Which of the following numbers provides a counterexample to the statement above?A9B12C13D14E15
单选题
Which of the following numbers provides a counterexample to the statement above?
A
9
B
12
C
13
D
14
E
15
参考解析
解析：
为证明所有3的倍数为奇数这个陈述是错误的。需要证明至少有一个3的倍数不是奇数。选项中只有12是3的倍数且不是奇数。
为证明所有3的倍数为奇数这个陈述是错误的。需要证明至少有一个3的倍数不是奇数。选项中只有12是3的倍数且不是奇数。
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