Hardest Series Teasers
Series teasers are where you try to complete the sequence of a series of letters, numbers or objects.
These brain teasers have been voted as the most difficult. Only teasers with at least 20 votes are shown. Good luck solving them!
|
Title |
Popularity |
Difficulty |
Submitted |
|
256 |
A Little History |
|
|
07/02/07 |
by Writer_fighter |
257 |
Initially Excellent |
|
|
06/17/08 |
by stephiesd |
258 |
256, 269, 286, 302, 307, 317, 328, 341, ?, ? |
|
|
04/10/06 |
by ---- |
259 |
Wordy Puzzle |
|
|
08/29/08 |
by darkpaladin2692 |
260 |
4, 12, 24, 36, 50, 72, 98, 120, 144, ? |
|
|
05/13/06 |
by kiss |
261 |
Iron, Bromine, Uranium, Argon |
|
|
12/23/02 |
by something |
262 |
Layers |
|
|
07/08/07 |
by Pojuer |
263 |
2, 5, 10, 17, 28, 41, 58, 77, ?, ? |
|
|
04/11/06 |
by kiss |
264 |
7, 97, 997 |
|
|
01/13/07 |
by calmsavior |
265 |
What Letter is Missing 2 |
|
|
07/27/05 |
by phrebh |
266 |
This Doesn't Seem to Add Up! |
|
|
06/01/08 |
by jazzmusician46 |
267 |
Misprinted Number |
|
|
02/04/08 |
by shenqiang |
268 |
What's Missing? 2 |
|
|
01/08/07 |
by Ninjakillyou |
269 |
Palmer's Notation |
|
|
10/23/06 |
by PineappleMama |
270 |
5, 6, 5, 6, 5, 5, 7, 6 ... |
|
|
01/16/01 |
by giraffe |
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