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, ??
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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.