Is x4 + y4 > z4 ?
(1) x2 + y2 > z2
(2) x + y > z
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.
为什么评论很多都提到分数或非整数。。这跟非整数有啥关系。。。
x^2=3 , y^2=4 , z^2=5 (1) x^2 + y^2 > z^2 成立, 题目不成立,题目里没有说明xyz都是整数,所以不充分
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