由于?$ \frac {1}{6}= \frac {25}{150}，$??$ \frac {1}{5}= \frac {30}{150}，$??$ \frac {27}{150}= \frac {9}{50}，$?
可知?$ \frac {1}{6}＜ \frac {9}{50}＜ \frac {1}{5}.$?
由于?$ \frac {1}{6}= \frac {15}{90}，$??$ \frac {1}{5}= \frac {18}{90}，$??$ \frac {16}{90}= \frac {8}{45}，$?
可知?$ \frac {1}{6}＜ \frac {8}{45}＜ \frac {1}{5}.$?
由此可知，滿足條件的數(shù)有?$ \frac {8}{45}$
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