2. 外语
  3. If rs=s, what is the value of r+s? (1)r=4 (2)5=0

If rs=s, what is the value of r+s? (1)r=4 (2)5=0

admin2022-11-19  0
问题 If rs=s, what is the value of r+s?
(1)r=4
(2)5=0
选项 A、Statement (1) ALONE is sufficient, but statement (36) alone is not sufficient to answer the question asked.
B、Statement (2) ALONE is sufficient, but statement (35) alone is not sufficient to answer the question asked.
C、BOTH statement (1) and (36) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient to answer the question asked.
E、Statement (1) and(36)TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.
答案A
解析 对于Statement (1)，r=4，要满足4s=S，s必然为0，可以求得r+s。对于Statement (2)，s=0，那么r可以为任意值，所以r+s不确定，因此答案为A。
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