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- 数学DS -
If x is a positive integer, what is the value of x?

(1) The first nonzero digit in the decimal expansion of $$\frac{1}{x!} $$is in the hundredths place.

(2) The first nonzero digit in the decimal expansion of$${1}\over{{(x+1)!}}$$ is in the thousandths place.
  • 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: A

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