Questions tagged [sequence]
A puzzle about sequences of symbols, elements, or other objects.
127
questions
83
votes
7answers
16k views
Thanks, dad! Never again
No idea why my dad dragged me into this place. Some guy is performing on the stage. He's reading numbers out loud. I think it's some kind of a sequence puzzle.
1... 8... 9... 16... 17... ...
33
votes
1answer
3k views
The mystery flag
Part two - The mystery flag - twisted
Based on these flags:
(Count the sun in the Argentina flag as yellow)
Which country does this flag belong to?
Please explain why
EDIT: I added a black ...
28
votes
12answers
2k views
22
votes
5answers
2k views
There are fifteen triangles, what is the sixteenth?
This is "fifteen triangles":
▲ ▼ ▲ ▲ ▼ ▼ ▲ ▲ ▲ ▼ ▼ ▲ ▲ ▲ ▼ ?
Each triangle points up or down. What the "?" figure should be and why?
22
votes
1answer
312 views
Sergeant Sequence takes the case
It was 2am and Sergeant Sequence had been called in to Headquarters urgently. The second he stepped through the door a file was pressed into his hands by the Chief Investigator, who began to talk ...
18
votes
1answer
504 views
Chain Puzzle: Tabletop Games #01 - Let's Play
This is the first Chain Puzzle in the Tabletop Games series, in which all puzzles are themed around board games, card games, tile games, and the like. The answer to this puzzle is a thematic word or ...
18
votes
3answers
640 views
Basically Binary but Boldly Baffling
Another image sequence puzzle inspired by @Conifers, enjoy ;D
Colorblind-friendly version
Clarification: one or more tag(s) has been deliberately omitted to enhance the difficulty.
Hints
1
2a
2b
...
17
votes
2answers
719 views
16 number puzzles on a blackboard
I have left you some number puzzles on the blackboard. Solve them and let me know what they spell.
Hint:
15
votes
1answer
421 views
Spot the pattern. There is none
Look at these pictures:
What's the next picture?
As requested, bellow is a set of possible answers. You don't have to look at them to find the correct answer.
14
votes
7answers
7k views
IQ-test-type question - sequence of large triangles with black and white small triangles in them
This puzzle is said to be from a Russian test and has an obvious but not fully fitting answer:
The task is to find correct picture to replace question mark.
The "obvious" pattern is
But of ...
14
votes
2answers
373 views
It comes full circle
Top, Middle, Bottom, Double-Right;
Double-Right;
Up Left, Middle, Double-Right;
Double-Right;
Top, Middle, Bottom, Up Left, Down Right;
Top, Middle, Bottom, Up Left, Double-Right;
???
What would ...
14
votes
1answer
672 views
This puzzle is a loss
What should replace the question mark on this list?
JBNRS, HF, GM, JPD, VL, AELMP, MS, WB, CB, GS, EC, SV, PD, PEJP, ?, …
Hint, added later:
Hint, added even later:
13
votes
1answer
2k views
What is the next number in the series?
What is the next number of this series?
1 , 4 , 5 , 6 , 7 , 9 , 11 ?
13
votes
1answer
452 views
A fortified nonogram
This puzzle is part 21 of Gladys' journey across the globe. Each part can be solved independently. Nevertheless, if you are new to the series, feel free to start at the beginning: Introducing Gladys.
...
12
votes
1answer
385 views
A simple twist on a classic puzzle
Given this sequence:
0, 4, 84, 212, 1940, 358036, 14113428, 127377044
What is the next item?
Hint:
Hint:
11
votes
1answer
2k views
I bet you can't find the next number in this sequence
Find the next number in this sequence.
9, 72, 16, 83, 33, 33, 36, 37, 32, 65, ?
11
votes
2answers
1k views
What's next? Think laterally
What is next in this sequence?
V
I V
I I I V
I I I I I V
V I I V
I V I I I I V
?
Answer is one of the following three options
A: I I I V I V I I V
B: I I I V I I I I I I V
C: V I I I V
Hint
Not a ...
11
votes
2answers
276 views
Finger sequence – find the continuation
Pick the correct continuation for the sequence.
Options:
Hint:
11
votes
1answer
240 views
A sequence of three letter words/abbreviations
I have ten three letter words/abbreviations in a sequence, numbered 0-9, each of which differ by precisely one letter from their previous and next words. Here are clues for each of the words:
The ...
10
votes
6answers
442 views
I shouldn't have asked him.. again
My roommate (rm) always looks busy in front of his laptop, so I try to start talking to him
Me: Hi, the last time we talked you told me your favorite book, and I like your taste! it's a very good ...
10
votes
1answer
1k views
The end of the life!
$1\ 16 \ 41 \ 55 \ 79 \ 90 \ 103 \ 120 \ 123 \ ?$
What is the last number in this different sequence! If you find it, it will be the end of the life!
10
votes
1answer
214 views
What's the order?
Below are five sequences of the digits 0-9 but each have been sorted based on a single criterion.
1) $1260459378$
2) $1742350698$
3) $0152469378$
4) $5463728190$
5) $1235904687$
Name the ...
10
votes
2answers
396 views
12 more blackboard puzzles (letter puzzles)
I have previously posted number puzzles. This time it's letter puzzles. Some clues have a Harry Potter theme.
Hint:
Hint 2:
Hint 3:
10
votes
1answer
836 views
Find the element that does not fit the pattern
These 12 elements form a set with a certain pattern, but there is one element that does not fit. Which one is that?
HINT
HINT 2
9
votes
1answer
767 views
A sequence about you (Puzzling Stack Exchange users)
I have a mysterious sequence for you...
$204, 186, 172, 133, 126, 123, 120, 119, 111, 107, 102, 96, 90, 87, 86, 86, 85, 79, 75, 73, 70, 68, 66, 66, 65, 65, 65, 64, 64, 64, ...$
This sequence may ...
9
votes
2answers
258 views
A Pixelated Sequence - Find the Continuation
A late question inspired by Finger sequence – find the continuation
How should the grid above the '10' be coloured?
9
votes
1answer
764 views
Finding the missing Symbols
_ # – _ _ # # – ? _ # – _ _ # # – = # _ #
– _ _ # # – ? _ # – _ _ # # – = # _ # – _
_ # # – ? _ # – _ _ # # – _ # – _ _ # # – ?
_ # – _ _ # # – = #
Which two ...
9
votes
2answers
279 views
How is BABBAB formed
$[A ...] \to A [...]$
$[B ...] \to B [S [...]]$
$[S A ...] \to B ...$
$[S B ...] \to A [S ...]$
$[S] \to B$
$[ ] \to$
(E.g. $[AAB] \to AABB$)
But, $[????] \to BABBAB$
Bonus puzzle:
9
votes
1answer
412 views
Missing element of the sequence
Could you find the missing symbol in the sequence shown below?
Hope you like :-)
8
votes
4answers
1k views
Nine, Seven, Gibberish, then what?
Here's a sequence:
What is the next item? Here are possible answers (but you don't need to look at them to figure it out):
Update
8
votes
6answers
3k views
20 cards facing down
You have a row of $20$ cards facing down.
A 'move' consists of the following actions performed in sequence:
Pick a face-down card and flip it face-up
If there is one, also flip the next card on ...
8
votes
1answer
331 views
8
votes
1answer
213 views
$a_n = 2n^2, n \geq 1$ (modified)
The puzzle asks to determine the next term in the sequence 2, 4, 8, 0, 0, 16...
a. 32
b. 18
c. 20
d. 24
e. 0
The obvious answer for me would be 32, with these zeros serving as the "neutral ...
7
votes
1answer
182 views
What will be next at the bottom row and why?
There is a stack made of 6 squares. As you can see there are yellow squares between red ones. The question is what will be the next row like? And why?
7
votes
2answers
338 views
That letter sequence started so nicely
Find out how the following letter-sequence is constructed:
...
7
votes
2answers
11k views
Find the missing number (triangle)
Find the missing number (triangle)
Options:
9
8
7
10
Please write the logic also.
7
votes
2answers
1k views
What is the missing number and the correct sequence?
I have a riddle, you might wanna help solve.
Just imagine, we would like to change the sequence (that works very well now [in German there is the term "funktioniert 1A" - which translates ...
7
votes
1answer
318 views
Fill The grid - 3.0
Can you fill this grid ? Version ($\pi$)
In text:
?14516
243748
120581
17186?
01?857
HINT 1
HINT 2
HINT 3
7
votes
1answer
148 views
Shaded boxes sequence
I have 9 boxes, every turn exactly 4 of them will be shaded. Given the following sequence what will be the results for entries 9 and 10.
6
votes
2answers
2k views
Tough pattern questions
I can't fathom any kind of pattern in these questions. The test is over but i'm curious to know how it should be solved.
6
votes
2answers
186 views
Trees and dates
A friend of mine in Sydney, Australia, asked for help in explaining these stones. I don't know if this is really a puzzle, but he's definitely puzzled.
In one of our local parks someone has put ...
6
votes
1answer
226 views
6
votes
1answer
123 views
A Sequence Riddle [duplicate]
Here is a list of numerical sequences:
1, 3, 5, 4
2, 3, 5, 4
3, 5, 4
4
5, 4
6, 3, 5, 4
...and so on.
(1 is 3 and 2 is 3, but 1 is not 2 and 2 is not 1. The same rule applies to every number in the ...
6
votes
2answers
196 views
Computer sequence
You have created a computer, but it is not working, only printing sets of 4 characters in a sequence. If you can predict the next 3 sets, then you can restart the computer and set it up so you can ...
6
votes
1answer
194 views
Find the next number in the following sequence [Mind bender]
I came across this sequence in the paper:
109080, 12123, 1350, 153, ?
What could be the next number? And what is the pattern that connects these numbers?
Dividing a term by the next term leads to a ...
6
votes
3answers
382 views
A Legitimate Sequence
Choices:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Sequence:
D G A B I L F ? ?
As long as you can count you can solve this puzzle.
So what could the next letters be?
5
votes
3answers
885 views
Can you find the value of the question mark$\color{red}?$
Puzzle:
Find the value of the question mark $\color{red}?$.
$$(2, 13, 47)$$ $$(5, 7, 19)$$ $$(8, 1, \color{red}?)$$
Hint 1: $\color{red}?$ is a prime.
Hint 2: $\color{red}?$ is a cyclops.
...
5
votes
2answers
844 views
Bunch of letters? It is all Greek to me
I found this paper on Grandpa's desk with a bunch of letters, big and bold, with a question:
Which two letters come next in the sequence? He even wrote down four choices
Which two letters go next?
...
5
votes
1answer
534 views
A Beautiful Looking Puzzle
In the picture given below, can you find out which picture will take place of the question mark and add your reasoning as well?
1.)
2.) 3.) 4.) 5.) 6.) 7.) 8.)
5
votes
3answers
190 views
Can a cube have a positive and negative on each face with no crossover?
This cube has a positive (blue) and a negative (black) bar on each face. That is 2 flat bars per face. On each face 1 bar has the opposite polarity to the other. I have hidden the faces to make the ...
