The reciprocal of a number is 1 divided by that number.
- The reciprocal of 11 is \( \frac{1}{11} \).
- The reciprocal of \( \frac{1}{10} \) is \( 10 \) (which is \( \frac{1}{\frac{1}{10}} \)).
So, the reciprocal of 11 is \( \frac{1}{11} \) and the reciprocal of \( \frac{1}{10} \) is \( 10 \).