Complete the pattern.

20,31,51,62,82=

93

Step-by-step explanation:

Difference between the number and its successor in the series follows the following pattern: 11,20,11,20, ...

So the difference between the last given number (82) and its successor is 11.

This implies that the next number is 82+11=93.

Going by the same pattern, the next number to follow will be 93+20 = 113

Similarly the next number will be 113 + 11 = 124 and so on.

Next three numbers are 93, 113 and 124