What Number Should Fill The Blank: V, VIII, XI, XIV, __, XX

Look at this series and find the connection between them.

The series is as follows;

V, VIII, XI, XIV, _?_, XX

What number should fill the blank?

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Don’t get confused by the roman numerals 🙂

This is a simple series where the next number is determined by adding 3 to it.

So lets add 3 to each of the number in the series

V = 5

5 + 3 = 8 = VIII

8 + 3 = 11 = XI

11 + 3 = 14 = XIV

Hence we can find the next number by adding 3

14 + 3 = 17 = XVII

To confirm the answer we add 3 one more time to see if we have got the right number in the series

17 + 3 = 20 = XX

Hence answer = XVII or 17