What Comes Next in the Sequence: 3, 7, 13, 21, 31, ??


Look at the series of numbers given in the riddle and find the connection between them.

What Comes Next in the Sequence:

3, 7, 13, 21, 31, ??

 

Answer: 43

Explanation:

If you observe the series closely, you will notice that the series has an increment as follows;

+4, + 6, +8, +10, +12

3 + 4 = 7;
7 + 6 = 13;
13 + 8 = 21;
21 + 10 = 31;

Therefore, to find the next number we add 12 to the previous number;

31 + 12 = 43.


Like it? Share with your friends!