GRE数学真题和解析(22)

2022-06-15 22:11:28

下面就是

  GRE数学真题和解析(22)

  27If 1 is expressed as a terminating decimal, how many nonzero digits 1/[(211)(517)] will the decimal have?

  A One

  B Two

  C Four

  D Six

  E Eleven

  将分子转化下,使之成为以10为底数的指数,由此可以判断小数点的位数了,(211)(517 )=1011*56=(1/64)*1017,由此可知,倒过来后,非零数位有两位,6和4.

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