Brain Test Level 415
Question & Solution (Brain Test Level 415)
The question asks you to complete the sequence: O, T, T, F, F, S, S, E, N, T, ...
This sequence consists of the first letter of the counting numbers:
- O (One)
- T (Two)
- T (Three)
- F (Four)
- F (Five)
- S (Six)
- S (Seven)
- E (Eight)
- N (Nine)
- T (Ten)
Following this logic, the next number is Eleven, so the letter is E.
Answer: E
DIFFICULTY
Medium
PRO TIP
Think about how numbers are spelled out, starting from one.