GMAT 考满分题库

- 数学DS -
If $$xy \neq 0$$, what is the value of $${{1}\over{x}}+{{1}\over{y}}$$ ?

(1) $${{1}\over{(x+y)}}=-1$$

(2) $$xy=6(x+y)$$
  • AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  • BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  • CBOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
  • DEACH statement ALONE is sufficient.
  • EStatements (1) and (2) TOGETHER are NOT sufficient.
显示答案
正确答案: B

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