Questions tagged [sequence]

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

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0
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2answers
118 views
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6answers
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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 ...
11
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1answer
238 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 ...
2
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1answer
92 views

Hard IQ questions with arrows

I have been looking at it for hours without a solution Any help would be greatly appreciated
2
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3answers
812 views

2 hard IQ questions

Can someone please help me to find the answers and the logic behind the 2 questions below? The questions are from the test taken from the website: http://www.iq-brain.com/example/1 I could solve ...
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2answers
1k views

Several IQ test puzzles

Here are some fun puzzles I would like to know the answers and explanations for. Enjoy! Source. 1. 2. 3. 4. 5.
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1answer
55 views

What's the next number in the following number sequence?

The sequence is: 138, 29, 1, 382, 913, 8, X Possible answers: a) 9 b) 2 c) 3 d) 12 Note: This question is not mine and it was asked as an IQ question by a teacher.
2
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1answer
157 views

Shortest word to longest word, step-by-step

Source As far as I know, I invented this puzzle. Question Starting with the one-letter words "A" or "I" how far is it possible to progress towards the 36-letter word "...
8
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0answers
297 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:
22
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1answer
296 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 ...
3
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1answer
132 views

What is the next item in this numerical sequence?

I found this on a test, and it's under "Numerical sequences". I can't figure it out. I tried using the numbers of the alphabet: 1, 2, 9, 12, 1, 2. I don't see a clear pattern. A,B,I,L,A,B,? ...
1
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0answers
158 views

Find the next term in the given sequence

I created this puzzle. The sequence is as follows: $$320, 71,4632,1E3D, 84B7, 6154, 4F3A44, 38B12, 11F1, BE7E44$$ Find the next element in the above sequence. Hint 1: Hint 2: Hint 3: Hint 4:
4
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1answer
256 views

What is the maximum length of sequence where the sum of 5 consecutive numbers in positive and sum of 8 consecutive numbers is negatve

What can be maximum length of such sequence? Hint one such sequence is
5
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4answers
360 views

Complete this cross sequence

What is the next element of this sequence and why? Possible choices: Hint 1 Hint 2 Hint 3 Hint 4 Hint 5
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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 ...
5
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2answers
190 views

Find the next number in the given sequence

I created this puzzle. Find the next number in the sequence and the logic behind it. $$2, 1536, 5, 1792, 23, 1184, 53, 1168, 113, 1048, 137, 1384, 179, 1576, 311, 1268, 431, 1234, 719, 2026, 1031, ...
3
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2answers
159 views

The fun in numbers

A friend of mine gave me this riddle. Find the next number of the sequence: 293, 313, 331, ... Let's see who can do better than I did. Hint: There is a new number:
7
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1answer
147 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.
4
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2answers
185 views

Minimum number of flips required to turn a sequence into alternating A and Bs

You are given this sequence composed of the characters A and B: A B B B A B B A A B A A B A A B A B A A A B B A B B B A At ...
5
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1answer
747 views

Shift and Sort the Sequence [closed]

Given a permutation of integers 1 through N, we need to determine whether it is possible to sort this list in an increasing order by following certain conditions. The conditions imposed are : We are ...
7
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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
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4answers
2k views

mensa sample iq-test question

I found these in a sample iq-test for mensa. Any ideas?
6
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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.
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1answer
100 views

What does this sequence of numbers represent?

1, 2, 4, 7, 11, 16, 22, 29, 37, 46, 56 There is one specific answer I'm looking for, but you could come up with other things that logically work out.
7
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2answers
323 views

That letter sequence started so nicely

Find out how the following letter-sequence is constructed: ...
7
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2answers
10k views

Find the missing number (triangle)

Find the missing number (triangle) Options: 9 8 7 10 Please write the logic also.
5
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1answer
230 views

Missing elements of this 32-length list

The following list has 32 elements. Element 8 and elements 22 to 32 are missing. Can you find why element 8 has been chosen to be missing? And can you find what are the missing elements? RTKW EHKB ...
3
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1answer
347 views

Complete the series:

$4427, 827, 67, 31, 9, ?$ Choose between: (a): $7$ (b): $6$ (c): $5$ (d): $4$ Looking at the numbers I think that there must be some exponential relationship but couldn't find it. I took the ...
10
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1answer
212 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 ...
2
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1answer
86 views

Sequence Puzzle - Sequence Of The Day

Look at these two sequences. The rules of these two sequences are the same. 0 32 15 3 9 5 4 2 6 7 13 110 174 155 314 2120 5360 24671 119546 193002 240820 274454 153700 1397287 17916598 26245242 ...
10
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2answers
385 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:
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2answers
708 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:
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2answers
278 views

Find the number that does not fit into the pattern shown below

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 12 34 56 78 910 1112 1314 1516 1718 1920 2122 2324 2526 2728 2930 3132 3334 3536 Each row forms a set which implements a pattern. The two patterns ...
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1answer
126 views

Complete this sequence of images

This is a sequence of images. The fourth image is blank. Replace the question marks.
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2answers
1k views

Which Numbers Replace the Question Marks?

Can you find out what the numbers below have in common? Can you figure out what comes next? ...
2
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1answer
437 views

An original non-recursive sequence

16, ?, 19, ?, ?, 15, 16, 9, ?, ?, 14, ?, ?, ?, ?, 1 According to my measure, this sequence is more original than that of Fibonacci. Replace the question marks with the missing numbers.
10
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1answer
756 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
3
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3answers
228 views

Dots in Squares

What pattern could be placed in the last square to complete the sequence? This image from https://drive.google.com/file/d/1W0A2E2GIwi6mq9b94FzA7PhfXCae-VPB/view originally created by Daniel ...
18
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3answers
633 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 ...
-1
votes
2answers
202 views

Is there any pattern involved in the following sequence? [closed]

Consider the numerical sequence $$800,1600,4800,6400,12000,6400, \cdots.$$ Is there any pattern involved in this sequence? I am very curious to know that. This puzzle is from a FlipKart Daily Quiz. ...
1
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1answer
152 views

Figure out the pattern

$0,4,8,21,52,65,96$ Given this set of numbers figure out the pattern they follow and write down the next seven numbers in the sequence. Hint:
3
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0answers
476 views

Haselbauer-Dickheiser Test no. 1: Matrix problem with four dots and tiles shifting colors [closed]

This problem is the first problem from the Haselbauer-Dickheiser Test. I find this to be one of the harder problems on the test that I haven't solved. To me, the test is weird in the sense that it ...
9
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2answers
255 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?
4
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1answer
304 views

Can you find the next number in the following series?

Replace the question mark with the next number. 14, 1, 13, 0, 23, 21, ?
6
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1answer
186 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 ...
4
votes
0answers
251 views

Find the missing element?

I've been trying to solve this for quite some time, can you help me solve it? This puzzle was made by one of my friend's teachers. This is not copyrighted and cannot be found anywhere on the internet. ...
11
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2answers
274 views

Finger sequence – find the continuation

Pick the correct continuation for the sequence. Options: Hint:
12
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1answer
419 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. ...
6
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1answer
220 views

What's the next letter?

Can you determine which letter comes next? In text U R R R A U ? HINT 1
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0answers
91 views

Flea on infinite chessboard jumping with irrational vector eventually changes square color [closed]

Question from Engel's Problem Solving Strategies: An infinite chessboard consists of $1 \times 1$ squares. A flea starts on a white square and makes jumps by $\alpha$ to the right and $\beta$ upwards, ...