400-1816-180
本題由chris提供
For any integers x and y, min(x, y) and max(x,
(1) w = max(20, z) for some integer z.
(2) w = max(10, w)
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
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答案：
D
Max(x,y)等于x
,y兩個數(shù)中較大的一個，Min(x,y))等于x,y兩個數(shù)中較小的一個。 求min(10, w)，即求10和w兩數(shù)中較大的一個，需要確定w和10的大小關(guān)系，若w>10，min(10, w)=w，若w<10，則min(10, w)=10；確定任意中情況都是sufficient的。
單獨條件1，w=max(20,z)，w等于20和z中較大的一個，若z>20, w=z>20>10，min(10, w)=w；
單獨條件2，w=max(10, w)，則w>10，則min(10, w)=w； 任意條件單獨都可以確定min(10,w)=w
選D。 
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