Note : In questions numbered 31 to 35 pick the odd thing out.
Note : Each of the questions from 36 to 45 follows a definite pattern, observe the same and fill in the blanks with suitable ones.
$$50, 40, 33\frac{1}{3}, 28\frac{4}{7}$$, _________, $$22\frac{2}{9}, 20, 18\frac{2}{11}$$