Multiple choice

Which of the following numbers has a non-terminating decimal expansion?

  1. $\frac{81}{3}$
  2. $\frac{91}{9}$
  3. $\frac{125}{5}$
  4. $\frac{121}{11}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The decimal expansion of $\frac{91}{9}$ is not terminating because its denominator 9 is not of the form 2m 5n, where 0 $\leq$ n, m < $\infty$.

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