Q17: If a and b are positive, is (a-1 + b-1)-1 less than (a-1b-1)-1? (1) a = 2b (2) a + b > 1 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.
题目如上,答案选B,但是我觉得仅有B是推不出来的啊。 求牛人们指导一下!!! |