**Question: **Find the next two numbers in the series:

1, 8, 11, 18, 80, 81, _, _

**Answer:**

The next two numbers are 82 and 83.

The pattern is : the list of positive integers beginning with a VOWEL.

1(One), 8(Eight), 11(Eleven), 18(Eighteen), 80(Eighty), 81(Eighty-one)

Hence, the next numbers are 82(Eighty-two), 83(Eighty-three), 84(Eighty-four), .....

It is not a series comprise of 0, 1 and 8. If so, 10 must be there.