which of the following statements is the negation of the statement
\"2 is even or -3 is negative\"?
(a)2 is even or -3 is not negative
(b)2 is odd or -3 is not negative
(c)2 is even and -3 is not negative
(d)2 is odd and -3 is not negative
基本上題目有些看不太懂...麻煩稍微解釋一下and為何選正確答案的理由?
2006-04-23 18:16:45 · 2 個解答 · 發問者 相思飄零 2 in 教育與參考 ➔ 其他：教育
題目:"2是偶數 或 -3是負數" 的否定
所以答案(d)2 is odd and -3 is not negative.
因為 P or Q 的否定 是not P and not Q
2006-04-26 15:08:45 補充：
對的
2006-04-23 18:51:42 · answer #1 · answered by chan 5 · 0⤊ 0⤋
所以題目若改為"2 is even and -3 is negative"的話..那答案就是"2 is odd or -3 is not negstive"嗎?
2006-04-24 05:12:12 · answer #2 · answered by 相思飄零 2 · 0⤊ 0⤋