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题库 / Prep2007E1-DS-4
Is the product of a certain pair of integers even?
(1) The sum of the integers is odd.
(2) One of the integers is even and the other is odd.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
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奇数*偶数=偶数
1. 0 is an integer.2. 0 is an even integer. An even number is an integer that is "evenly divisible" by 2, i.e., divisible by 2 without a remainder and as zero is evenly divisible by 2 then it must be even.
3. 0 is neither positive nor negative integer (the only one of this kind).
4. 0 is divisible by EVERY integer except 0 itself.
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加减法运算中：只有 奇数+偶数=奇数
乘除法运算中：只有 奇数*奇数=奇数
"The sum of the integers is odd.",只有一个奇数+一个偶数才可能等于奇数。所以必是一奇一偶登录 或 注册 后可以参加讨论
odd+odd=even
even+even=even