Brain Test: Tricky Puzzles Level 133 Answer [What Should We Put at the Question Mark?]

Brain Test: Tricky Puzzles Level 133 shows the sequence O-T-T-F-F-S-S-E-? and an A-Z keyboard. Try the hints first, or jump straight to the answer below.
Just want a hint?
Try these two hints before you look at the solution. They point you in the right direction without giving the answer away.
Hint 1
Hint 2
Still stuck on Level 133? The walkthrough below shows every move, and the full answer comes right after it.
Brain Test: Tricky Puzzles Level 133 walkthrough
- Tap N. Tap the N key on the keyboard.
- Confirm. Tap the green tick.
Brain Test: Tricky Puzzles Level 133 answer
O-ne, T-wo, T-hree, F-our, F-ive, S-ix, S-even, E-ight, N-ine.
What you can and can’t use
- TapN key The first letter of 'nine'.
- TapGreen tick Submits the answer.
Next levels
Brain Test: Tricky Puzzles All AnswersHints & step by step solutions for every levelAbout Brain Test: Tricky Puzzles
Brain Test: Tricky Puzzles is a free puzzle game by Unico Studio with hundreds of trick questions. Most levels can’t be solved the obvious way: you drag objects, tap hidden spots and sometimes turn your phone to find the answer. Get it on Google Play or the App Store.
Thanks for reading! If this got you past Level 133, the next answers are linked above, and every level is on the Brain Test: Tricky Puzzles All Answers page.

