If n and p are integers, is p > 0 ?
(1) n + 1 > 0
(2) np > 0
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.
记个笔记:这个题漏看了整数这个条件。
所以条件1是n>-1 n大于等于0
再根据条件二同号,n不等于0
得出p大于0
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