GMAT 考满分题库

- 数学DS -
If r is a constant and $${a}_{n}$$ = rn for all positive integers n, for how many values of n is $${a}_{n} < 100$$ ?

(1)$${a}_{50} = 500$$

(2)$${a}_{100}+{a}_{105} = 2,050$$
  • 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: D

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