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Questions tagged [sequence]

A puzzle about a series or collection of symbols, elements, or other objects, whose chosen ordering obeys a specific logical rule, which is usually to be determined.

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8 votes
1 answer
236 views

Mind your P's & Q's

Here is a numbered sequence of words/phrases. Where should SESQUIPEDALIAN fit in this list? ZIPPER PEPPER MONEY SNIPPY PRIMED PIPPED SNAPPED POUND PUPPY PARADROPPED QUASI-POPULAR PEOPLE ... (sequence ...
Amoz's user avatar
  • 27.1k
8 votes
2 answers
415 views

I’m cheering them on!

1: 3: 5: Can you determine what’s next? Clarification: In a comment I was asked if the [knowledge] tag should be added to this puzzle: Since no special knowledge is necessary to solve this puzzle,...
Will Octagon Gibson's user avatar
3 votes
1 answer
283 views

Number salad with a meaning

617181419920141 128131119 1331152419 54141131811 Your goal is to explain what number sequence should come next and what it means.
Kathi's user avatar
  • 357
0 votes
1 answer
242 views

Numerical sequence puzzle: 552175, 228496, 198479, 583317, 140554, 114383, 117045, ?,?

So here's the sequence, that I composed on my own. Think trees and 🟡 : 🟡 552175, 228496, 198479, 583317, 140554, 114419, 117046, ?, ?
Fraternal9274's user avatar
1 vote
0 answers
107 views

Continuing the hexadecimal sequence 9bf66a6a87, 9bfd91c857, 9c0501e2ae, 9c0991af27, 9c0d27e6ec, [closed]

Given the following sequence of hexadecimals, figure out how to generate the next few in the sequence: 9bf66a6a87 9bfd91c857 9c0501e2ae 9c0991af27 9c0d27e6ec My ...
ray's user avatar
  • 11
1 vote
1 answer
154 views

Quick find the unique answer, it may not be unique otherwise!

Replace the question mark with the correct 5-digit number. ...
Prim3numbah's user avatar
9 votes
1 answer
785 views

2,6,?,30,-270 number sequence

Got this number sequence puzzle from a friend.
Fraternal9274's user avatar
-1 votes
1 answer
105 views

Numerical Sequence Puzzle: 8388607, 536870911, 2147483647,?

Sequence puzzle made by me. 8388607, 536870911, 2147483647, ?
Fraternal9274's user avatar
8 votes
1 answer
166 views

Two numerical sequences

Two numerical sequences made by me. Make sure to provide reasoning. 90,81,65,29,9,? 46656, 823543, 16777216, ?
Fraternal9274's user avatar
5 votes
1 answer
210 views

Homemade number sequence puzzle

A homemade number sequence puzzle. The sequence is as follows: 001, 1001, 00001, ?, 001001
Fraternal9274's user avatar
14 votes
2 answers
2k views

4,4,2,6,2,10,4,_ sequence from 4th grade packet

The sequence (from my child's "for fun" challenge packet, not for credit or graded) is: 4,4,2,6,2,10,4,_ The possible answers are: A) 15 B) 20 C) 25 D) 28
jmcarson's user avatar
  • 243
3 votes
1 answer
310 views

The mystery of 107 numbers

Find the algorithm that was used to create the following sequence of numbers: BAH BAA BBA BAD BBD BAG BBG BAJ BBJ BBC BCC BBF BCF BBI BCI BCB BDB BCE BDE BCH BDH BDA BEA BDD BED BDG BEG BDJ BEJ BEC ...
web adventurer's user avatar
-3 votes
1 answer
122 views

Apple Sack Reconstruction [closed]

Apple Sack Reconstruction Puzzle Problem Statement: You have an apple tree that can produce apples of four colors: red, yellow, green, and blue. Imagine that you collect all these apples and place ...
Moix's user avatar
  • 5
2 votes
2 answers
925 views

2759, 4248, 1152,?

What comes next? 2759, 4248, 1152, ? What is the pattern? The op got it from this site: https://free.ultimaiq.net/nse.htm
user avatar
4 votes
1 answer
688 views

Few enigmatic puzzles [closed]

?, 63264, 12825, 65121, 02420, 48409 REDYPS, Y = ? 8, 33, 5 : X, II, ? Gods in space (7 letters) = 51151 = 8812, 22334 = 8459, 99111 = 2110910, 27772 = ?
IdontKnowWhatNameToPut's user avatar
5 votes
3 answers
520 views

Sequence of 3x3 grids of dots

Has anyone got any ideas on how to go about solving this?
Redditposter's user avatar
9 votes
3 answers
900 views

Minimum number of flips needed to fully set a binary string

Source: My school teacher, it was just given as a problem statement. Problem: You are given a binary sequence $S$ of up to $10^6$ bits. You wish to set all the bits in the string to $1$, but the catch ...
user88178's user avatar
  • 103
4 votes
1 answer
750 views

Numbers turned into a number turned into numbers (start with the smallest)

What number should replace the question mark? Explain why. Hint 1
Prim3numbah's user avatar
4 votes
2 answers
196 views

Strings of Kind Numbers

A positive integer is said to be “kind" if it is divisible by one of its digits other than 1 (https://oeis.org/A185186). A kind string of numbers is a finite sequence of numbers all of whose ...
Bernardo Recamán Santos's user avatar
4 votes
0 answers
323 views

Lucas's interesting cipher

Lucas was fooling around with some letters when he encoded some text into Gsobj lwmtkd sbceugb vfy rgdjb.. Can you figure out the original text he had?
Alan Bagel's user avatar
19 votes
1 answer
537 views

Almighty threats!

There's rhyme and reason behind the following 10-step sequence of words and phrases: 1. HUSK 2. BE COMELY 3. TRACKED 4. NOT HOOK 5. KICK TIPS 6. CUSP 7. ALMIGHTY 8. THREATS 9. BEFIT 10. ? The name ...
Stiv's user avatar
  • 144k
12 votes
2 answers
642 views

Arithmetic-progression-free sequences

This question Sudokus with no 3-term arithmetic progressions within made me wonder about the following question. What is the longest sequence composed of the integers 1..N (or 0..N-1 if you have a ...
Florian F's user avatar
  • 30.1k
2 votes
0 answers
117 views

Find another way to prove the answer: circles with four numbers in them [closed]

I know of an alternate solution to 3 where trying to find it would make an interesting puzzle. Can anyone do so? It has to involve a sequence somehow. Source: https://www.indiabix.com/puzzles/number-...
Indias puzzle girl's user avatar
2 votes
1 answer
312 views

Number sequence puzzle: strings of 0s and 1s

How can I solve this sequence? 011010, 100010, 100010, 100010, 000010, ?, 100010 https://free.ultimaiq.net/nse.htm
Simi 's user avatar
  • 23
2 votes
0 answers
305 views

What's the missing number related to primes?

I would like to draw your attention to this mathematical sequence related to prime numbers I've created and ask what the missing number is. 2, 5, 27, 182, 2310, 27200, ______, 8998400, 223092870, ...
Ruleft's user avatar
  • 29
0 votes
1 answer
157 views

Sequence of triangles divided into 10 smaller triangles with yellow, purple, and/or dots [closed]

This is IQ type of puzzle. May not be progressive sequence.
Fraternal9274's user avatar
1 vote
2 answers
283 views

Numeric progressive matrix: 2-7-5, 2-3-4, 10-21-?

This is an interesting question that I got from an IQ interview test. This can have multiple answers but need a good explanation.
Chau Giang's user avatar
8 votes
2 answers
847 views

A very presentable number sequence

(The title holds a clue) 12,22,30,36,40,42,42,40… Here is a finite sequence. Can you tell me the sum of all of its numbers?
PDT's user avatar
  • 14.4k
8 votes
1 answer
524 views

Find the pattern of the sequence of prime numbers 17 23 5 1013 2027 13

A friend gave me a sequence of prime numbers 17 23 5 1013 2027 13 and said that they have a pattern. I tried to find something but I am stumped by the fact that the numbers first increase, then kill, ...
whoisthat's user avatar
5 votes
1 answer
305 views

What are the next 3 terms: 19, 43, 59, ...?

What are the next 3 terms in the following finite sequence? 19, 43, 59, 23, 79, 83, 109, 463, 569, 263, ?, ?, ?
Dmitry Kamenetsky's user avatar
9 votes
1 answer
487 views

none, none, Newland, Portage, Plano

What is the pattern behind this list of US cities? Really quite simple for US folk, and I think most educated foreigners have the requisite background info. US City US State Añasco PR Carolina PR ...
Laska's user avatar
  • 1,919
20 votes
1 answer
2k views

Can One Solve This Scary Sequence?

The following terms appear in a sequence. Unfortunately, they are scrambled (both the original terms and their order). Theory, Policeman?, Contest, Clarice, Bad Act, One in Rome, Fashionable, Confess,...
AlteringIntegral's user avatar
1 vote
5 answers
2k views

What is next letter in sequence: B, D, G, J, L, ___?

My answer is P. But I am not sure as there is not sufficient data to support this. B(2), ____, G(7), ____, L(12), _____ (alternating sequence of difference 5: 2, 7, 12, 17,...) ____, D(4), ____, J(10),...
Mohit Vijay's user avatar
5 votes
0 answers
258 views

Longest Fibonacci word

Fibonacci words are defined as $F_0 = a, F_1 = b, F_{n+2} = F_nF_{n+1}$ where $a, b$ are letters. How can you find the longest Fibonacci sub-word in a given string? Try to solve it in linear time ($O(...
popcorn's user avatar
  • 151
5 votes
1 answer
589 views

What is the next number in the following sequence: 0, 4, 8, 21, 52, 65, 96,?

What is the next number in the following sequence: 0, 4, 8, 21, 52, 65, 96, ? To allow new users to solve this puzzle and earn reputation points, I encourage all users whose reputation is 200 or ...
Will Octagon Gibson's user avatar
15 votes
1 answer
915 views

E Rebus Unum – a picture sequence puzzle

This is part 42 of the puzzle series Around the World in Many Days. Each part is solvable on its own. Dear Puzzling, Today I have been taking it easy. You might even say it has been a walk in the ...
Jafe's user avatar
  • 77.2k
6 votes
1 answer
501 views

A healthy number sequence

What should b the missing number? 1, 2, 3, 5, 6, 7, ?, 12
Dmitry Kamenetsky's user avatar
3 votes
0 answers
153 views

The Mono-Quantum Condrum

You are presented with a locked box, and on its surface, you notice a sequence of peculiar symbols: ⌬ ⌅ ⊙ ⊡ Next to the symbols, there's an inscription: ...
Aitzaz Imtiaz's user avatar
2 votes
1 answer
977 views

What is the next term in the sequence 3, 1, -7, 41?

I could detect only one pattern, however, the sign is confusing me $3 - 1 = 1 \times 2$ $1 - (-7) = 2 \times 2^2$ $-7 - 41 = -3 \times 2^4$ I have a pattern, but I am confused due the to sign.
Mohit Vijay's user avatar
2 votes
3 answers
354 views

Next term in sequence [closed]

Came across these 3 sequences to find the next number denoted by '?' in a test yesterday and was unable to select the right answer from the options given 1,6,19,54,151,426,? - Options given are 1415,...
quantrader23's user avatar
9 votes
1 answer
197 views

Continue the squence of hexagons

This is from c't, a German IT magazine (link will download file). You see seven hexagons, each with seven green and blue dots, following a specific rule. Find out what colors the circles must have to ...
Mighty4711's user avatar
7 votes
1 answer
421 views

Explain: 5-1=1, 5+1=1, 5=1

Explain the following equations. The final answer is 1 word. $4 ÷ 7 - 1 = 0\\ 1 \times 12 + 8 = 2\\ 0 ÷ 10 + 7 = 0\\ 9 \times 2 - 3 = 1\\ 5 - 1 = 1\\ 4 - 2 = 1\\ 2 \times 2 - 9 = 1\\ 5 = 1\\ 5 + 1 = ...
Lezzup's user avatar
  • 6,012
8 votes
1 answer
516 views

What comes next in this sequence? Choose from 4 options

What comes next in this sequence? Why? Choose from the 4 options.
RogerA's user avatar
  • 6,561
16 votes
2 answers
1k views

What should we put in the 6th box?

Below there is a small sequence. What should we put in the 6th box?
Lezzup's user avatar
  • 6,012
4 votes
1 answer
530 views

Find next element of the sequence

Source of the question: Taken from the sub-Reddit r/askmath here: https://www.reddit.com/r/askmath/comments/15ar3ne/looking_for_the_answer_to_the_following_sequence/ What is the next element of the ...
user85272's user avatar
-4 votes
2 answers
422 views

4, 2, 4, 2305843009213693952, ? - an original number sequence

Here is the sequence: 4, 2, 4, 2305843009213693952, ? Source: My brain (as it was invented by me. I also attempted to search if someone else created this, but I was unable to find) Hint 1: Hint 2: (...
Qaer Kyr's user avatar
3 votes
1 answer
142 views

Find the next term in the sequence [closed]

What's the next term in the sequence? $12$, $28$, $36$, $84$, $88$, $168$, $\ldots$ The possible choices are: $174$, $170{2\over3}$, $188$, $169{1\over3}$, $176$
user85175's user avatar
1 vote
3 answers
383 views

The following sequence contains a 12 somewhere

Consider the following sequence: 11, 6, 11, 11, 6, 11, 11, 6, 11, 6, 6, 11, 6, 11, 11, ... Although it looks like a sequence of 6s and 11s at first, it will in fact eventually contain a 12. Also, it ...
Geoffrey Trang's user avatar
9 votes
1 answer
352 views

A *special* sequence of dots and lines (from first to last)

What you see here is a complete sequence of dots and lines. Can you tell me what this sequence represents?
Prim3numbah's user avatar
0 votes
1 answer
501 views

Circle, circle + triangle, ... sequence of groups of colored shapes:

Source: https://ravens-2-progressive-matrices-clinical-edition.netlify.app/ I can't seem to find a logical consistency for the answers. What is the correct answer?
Halcyon Abraham Ramirez's user avatar

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