Choose the correct alternative that follows logically in the given series.
One, Two, Four, Seven, Eleven, ?
Show answer & explanation
Correct answer: A
Explanation
The correct next term for this number series is sixteen.
If we convert these words into digits, the series looks like this: 1, 2, 4, 7, 11, ?
Now, look at the difference between consecutive numbers:
1 (+1) → 2
2 (+2) → 4
4 (+3) → 7
7 (+4) → 11
As you can see, the number being added increases by 1 each time (+1, +2, +3, +4).
Following the same pattern, we need to add 5 to 11 for the next term:
11 (+5) → 16
So, the next correct option is sixteen.