Questions tagged [sequence]

A puzzle about sequences of symbols, elements, or other objects.

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3
votes
1answer
295 views

Last item of the sequence? [closed]

3968, 63, 8, 3. I'm lost here, thought it had something to do with square roots but my guess was 1. Usually I see questions like this and it's 4...16...25, etc.
9
votes
1answer
515 views

Finding the missing Symbols

_ # – _ _ # # – ? _ # – _ _ # # – = # _ # – _ _ # # – ? _ # – _ _ # # – = # _ # – _ _ # # – ? _ # – _ _ # # – _ # – _ _ # # – ? _ # – _ _ # # – = # Which two ...
5
votes
3answers
706 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. ...
3
votes
3answers
279 views

Puzzling Number Boxes

Found this puzzle as a translation question. The Chinese is fairly simple, it just asks to solve for the ? in the bottom right square. The actual puzzle though, I have no clue about. Can any of you ...
-1
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2answers
165 views

can you solve these? [closed]

Here are some sequence patterns. I have no clue.
21
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?
9
votes
2answers
270 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:
0
votes
2answers
762 views

A Lot of Thought [duplicate]

One of my favourite school time riddles! What is the number of the parking space containing the car?
6
votes
5answers
2k 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 ...
7
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
15
votes
1answer
402 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.
-2
votes
1answer
196 views

What is the next number in the integer sequence?

What is the next number in the following sequence? 25 27 30 34 39 45 52 60 69 79 69 60 52 45 39 34 30 26 22 18 82 78 74 70 66 67 64 60 65 80 ?
4
votes
1answer
760 views

Which shape is next in the sequence?

This picture has been driving me crazy all day.
1
vote
1answer
7k views

16, 06, 68, 88, ?, 98 [duplicate]

Can you figure out the rule that goes in this sequence? 16, 06, 68, 88, ?, 98 What is the '?' in the sequence? Hint:
4
votes
1answer
296 views

Thick and light walled dots sequence

Hi I saw this sequence and cant's stop thinking about it. I was guessing that the number of thick-walled dots represents the number of sides for the next shape in the sequence the 3rd shape has 3 ...
6
votes
1answer
1k 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.
3
votes
1answer
464 views

Why is this sequence of images correct?

There are currently 33 questions on Mensa's "Online IQ Test" which I took for fun. I correctly answered 32 questions and understand why they are correct, but there is one remaining question (to which ...
2
votes
4answers
251 views

Extend the sequences of numbers and names

Find the next entry in each of this pair of related sequences: 1, 4, 6, 8, 9, ? Bobby, Joe, Johnny, Carl, Ted, ? Note: There's no way to solve this without making use of both sequences - it's ...
0
votes
2answers
200 views

Continue sequence

Son asked such a task. Continue the number sequence 5, 7, 8, 12, 11.... The son is in the second grade. They studied the operations of addition, subtraction and ...
1
vote
3answers
444 views

Find the next square in this sequence

What's the next square? It was extracted from an IQ test of Mensa. There is no trap except I don't know if it can be solved. There's some French before the question: Parmi les 5 figures ...
2
votes
1answer
219 views

What is the 7th line?

...
5
votes
3answers
186 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 ...
4
votes
1answer
3k views

Is it possible to scramble a Rubik's cube so that each face has no more than 2 squares of the same color?

So the complete conditions for this scrambled cube can be described alternatively as the following: Each face has less than 3 squares of the same color, which leads to 1a. Each face has 5 or 6 ...
4
votes
2answers
437 views

Stimulating Treasure Hunt?

The puzzle is broken into four parts, and each part yields a single letter. Put them all together, and it'll spell out the thing that gets me up in the morning :-) PART 1 1) One who may think ...
9
votes
1answer
396 views

Missing element of the sequence

Could you find the missing symbol in the sequence shown below? Hope you like :-)
0
votes
1answer
174 views

A play with sequence

What should be the next two alphabets in a given sequence? GE,RU,CH,GR,?
5
votes
1answer
531 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.)
6
votes
4answers
513 views

Find the next number in the sequence [closed]

One tough puzzle to solve : Find the next number in the sequence : 5,105,74,712,37,? Options are : a. 2008 b. 57 c. 507 d. 98 e. 44 What is the next number, and why? Puzzle ...
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 ?
5
votes
0answers
2k views

Mensa IQ test question: complete the logical sequence [closed]

I tried taking the Mensa practice test. One of the question involved completing a series of figures with the most logical option. This is the base sequence: And we have to choose the additional ...
2
votes
2answers
470 views

A puzzling data-driven sequence

First puzzle! I was inspired by this question to make my own. Props to the author for itching my brain! Update: I double-checked the sequence, turns out it changed! I overlooked something which I ...
9
votes
1answer
751 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 ...
3
votes
2answers
270 views

What are the next two items?

|=|, |=|, -|, |=, |=, |-|, =|, ..., ... What are the last two symbols in this sequence? Sorry for being so unclear. There's how I'd draw those symbols: The ...
6
votes
3answers
373 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?
-1
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2answers
220 views

The king and his daughter! [duplicate]

Years ago, there was a small kingdom, in which there was a king. His daughter was so beautiful, that people around the world went there to marry her. But the king would allow the most clever man to be ...
-3
votes
1answer
338 views

Why does the number 312213 follow the number211213 [duplicate]

In a number sequence of 1, 11, 21, 1112, 3112, 211213, why is the next number 312213?
32
votes
1answer
2k 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 ...
8
votes
1answer
324 views

Who started it? And who did not?

The question is: Who started it? And who did not?
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!