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Multiple choice

The $r$th term of series $2\dfrac{1}{2} + 1\dfrac{7}{{13}} + 1\dfrac{1}{9} + \dfrac{{20}}{{23}} + .....$ is

  1. $\dfrac{{20}}{{5r + 3}}$
  2. $\dfrac{{20}}{{5r - 3}}$
  3. $20\left( {5r + 3} \right)$
  4. $\dfrac{{20}}{{5{r^2} + 3}}$
Reveal answer Fill a bubble to check yourself
D Correct answer

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