Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [number-sequence]

A puzzle that asks for the pattern in a given number sequence.

0
votes
0answers
70 views

Sequence of close numbers

I just came up with the following sequence of numbers. 25 26 27 28 30 30 ... They all seem to be very close to one another... but what is the next number in the sequence? And what is the principle ...
14
votes
3answers
1k views

Logic behind numeric sequence

There was this sequence on a magazine and the reader has to find the next number: 10, 2, 4, 6, 2, 8 I couldn't find one, then I found the answer in the next magazine. They say the number is 5, so ...
4
votes
0answers
134 views

Number sequence puzzle; 2, 10, 44

Predict the next three members of the sequence below and explain what the relationship is. 2, 10, 44, 1012, 248, Hints will follow if required. This number sequence does not appear in the Online ...
5
votes
1answer
53 views

A very basic number sequence puzzle

Predict the next members of the sequence below and explain what the relationship is. 2, 10, 101, 1211, 14321, ...
6
votes
5answers
985 views

Long digital sequence. 16xxxxxxxxxxxxx61

Find the digital key and very simple method to unlock the long digital sequence 16xxxxxx61 Additional clues: Eeryday one clue will be given till problem is solved Day 1: Bounty Day 2: My code is ...
4
votes
1answer
169 views

Finding a lost friend in a haunted mansion

Whilst staying in a large haunted mansion, Mervin had carelessly lost his friend Debs. She was nowhere to be found, and wasn't answering his calls. Instead of finding her, he discovered this ...
5
votes
1answer
62 views

Number Sequence Series-Question 6

This a series of questions that are created by myself. Since question 6 is not that difficult I will not give any hint to you guys. Enjoy the test. Here is question 6: 2,6,8,7,5,3,? $$$$ If you ...
3
votes
1answer
87 views

Number Sequence Series-Question 3

I want to share a series of questions that are created by myself. I will give a hint in 24 hours and my answer in 3 days given that nobody could answer my question. Here is my number sequence: 2020,...
4
votes
0answers
229 views
+50

Number sequences: 000, X00… and 6X000X9, 700XX08

Q1: 000,X00,?,XX0 ,X00 Q2: 6X000X9,700XX08,00000015,?,00000015,?,00000015 These two questions actually come from the puzzles made by my friend. He gave me his puzzles recently but I couldn't figure ...
0
votes
1answer
96 views

Fill the grid- 4.0

Grid again !!! Can you find what comes in place of '?' ? HINT 1 HINT 2 HINT 3 In text: 5234 2112 06?7 0964 Also Try: Fill The grid - 3.0 Fill the grid - 2....
4
votes
1answer
62 views

Number Sequence Series-Question 5

This a series of questions that are created by myself. I will give a hint in 24 hours and my answer in 3 days given that nobody could answer my question. Here is question 5: 342,765,?,242325 (It ...
3
votes
3answers
57 views

Number Sequence Series-Question 4

I want to share a series of questions that are created by myself. I will give a hint in 24 hours and my answer in 3 days if nobody could answer my question. Previous ones are here: Number Sequence ...
4
votes
0answers
217 views

What are the alphabets in the question mark?

BDCBAF :: ADBFCC :: CEBCAG = PDL :: XRI :: ? This alphametic question actually comes from the puzzles made by my friend. He gave me his puzzles recently but I couldn't figure it out. Any clues? ...
6
votes
4answers
184 views

Number Sequence Series-Question 1

I want to share a question that is created by myself. I will give a hint in 24 hours and my answer in 3 days given that nobody could answer my question. Here is my number sequence: 3/2,2/3,3/4,1/3,...
6
votes
1answer
231 views

Number Sequence Series-Question 2

I want to share a question that is created by myself. I will give a hint in 24 hours and my answer in 3 days given that nobody could answer my question. Here is my number sequence: 1441,2882,5764,?,...
1
vote
1answer
88 views

Shapes in the wild

New here so apologies if this is not quite allowed. Yesterday our department had a meeting in one of our conference rooms on campus. When we arrived the room was empty, but there were three puzzles ...
0
votes
1answer
93 views

Identify the rule and find the missing number

The following sets of numbers are connected through a common rule/patern. Find the missing number(?) $(255,153,51x)(153,0xx,51x) = 669900$ $(255,204,51x)(204,51x,51x) = 339900$ $(153,153,...
0
votes
0answers
97 views

Join the Fun at Jack’s Casino to get a shot at Jackpot

Jack’s casino dealers are not all prime. But, he gives better odds to get the daily Jackpot by revealing lot more numbers in the sequence in play. That way his Casino is much better than Cryptic ...
0
votes
1answer
65 views

Find the missing parking space number [duplicate]

Each space in this parking area is numbered. The parked car covers one of the numbers. What is the number? For reference, the parking numbers are $16,06,68,88,X,98$ where $X$ is the hidden number.
-5
votes
3answers
141 views

Circular Logic - It just doesn't add up [closed]

It seems one of these numbers just doesn't belong... Can you tell us why??
5
votes
1answer
271 views

Find the next term

Here, we have a sequence. 0 , 15 , 23 , 155 , 287 , 539 , 767 , ? Can you find the next element ? HINT 1 HINT 2 HINT 3
0
votes
0answers
141 views

Ladies and Gentlemen…Please count your cards. Can you beat our prime dealers at our Cryptic Casino to earn some cold cash?

Cryptic Casino employs only prime dealers and encourages the patrons to count the cards unlike other casinos. We introduced a new game recently and encourage you to match your wits with our prime ...
3
votes
1answer
112 views

Find the first three terms of the sequence

Find the missing values in the sequence: $X, X, X, 59, 2, 65, 3, 58, 9, 79, 3, 23$ Hint 1: Hint 2:
1
vote
3answers
122 views

Find the next three terms in the sequence

This sequence consists of triplets; each triplet is linked to each other. $1,36,8,2,48,4,3,60,0,\text{X},\text{X},\text{X}$ The three $\text{X}$'s signify the missing numbers.
2
votes
0answers
138 views

Find the next terms in this sequence. 4,82,1

Find the next few terms X, X, X. in this sequence Give your reasoning 4, 82, 1, 14, 84, 88, 0, 82, 81, 22, 12, X, X, X
7
votes
1answer
295 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
11
votes
6answers
584 views

Temple Password

You and your friends Brutus and April are exploring an ancient temple when you encounter a locked door with a stone keypad next to it numbering 0, 1, 2 and 3. Out of curiosity you decide to type in ...
4
votes
1answer
149 views

How to articulate the answer to the 82k sequence riddle

I have found the quintessential you-won't-find-it-if-you-don't-know-it question: Question: "What is the next element of this sequence: 2,3,4" Answer: Short explanation: Long explanation & ...
36
votes
5answers
6k views

A very simple puzzle: 1,1,2,1,2,2,3

Here's a simple puzzle, I know that you will find. As long as you can count, It shouldn't take much time. 1 1 2 1 2 2 3 1 2 2 3 Find the next 4 numbers in this sequence.
5
votes
1answer
135 views

Fill the grid - 2.0

Can you fill this grid ? (Version 2.0 ) Text version 714523 191303 165088 213443 573211 91?12?
13
votes
4answers
1k views

Sequence puzzle

This is a sequence puzzle I found online which I'm stuck on: 452801, 773924, 102410, 471056, ? I figured out how to get from the first number to the second (+3, +2, +1, +1, +2, +3) for the digits, ...
-4
votes
10answers
881 views

SafeCracker #3 - We've Been Blocked [closed]

Our Last Safe To Conquer Ok, team, this one might give us a little trouble. Nothing we can't handle though... let's go... This safe model is "The NevaCrak 9000" - the most secure safe there is. ...
3
votes
1answer
90 views

Another Number Sequence Problem

Find the next number in the sequence: $10,11,21,32,53,85,49,45,5,50,?$ This sequence seems to me as possibly difficult to guess, so below is a hint.
3
votes
2answers
128 views

SafeCracker #1 - Look who's talking

The Plot You work for a tech company in Tampa, FL. Recently there was a break-in, and the company's trade secrets were stolen. Company PI have tracked the briefcase containing the secrets to the ...
0
votes
1answer
69 views

Place Your Bets 3 , last of the series

A harder sequence to figure out... What are the next 4 cards, including suits?
1
vote
1answer
50 views

Place Your Bets 2 - In sequence, of course

Your Cards... You have to figure out what the next row of 4 cards will be. There is a pattern in there somewhere, promise. Good Luck
2
votes
1answer
80 views

Place Your Bets - in sequence, of course

Your Puzzle There is some sort of pattern in cards below. Simply figure out what the next card should be. Note: You cannot re-use a card already in play.
0
votes
1answer
77 views

Continue this number sequence

How does this sequence of integers continue? 4 5 8 8 9 9 12 13 Not too difficult I think.
0
votes
1answer
89 views

Why do I always lose? [duplicate]

As always, good luck! Sarah is really good at math. I mean, really good at math. Every now and then we play this game where we take turns picking random numbers between 1 and 10, and we add these ...
2
votes
2answers
231 views

Continue the number sequence

Some minor misunderstanding last week inspired me on creating this puzzle. Hope it would be not very boring :) Sequence: 10 50 100 306 356 562 ... What`s next? Hint:
17
votes
1answer
806 views

Creepy video on Youtube, with secret cipher built in

This showed up in r/deepintoyoutube: https://www.youtube.com/watch?v=j1ExfbH4Jew I've posted it around, and no one has solved it. I believe it is a cipher for a couple of reasons, at the end 26 ...
26
votes
4answers
4k views

An unusual and very hard number sequence problem

I heard this number sequence problem about 25 years ago from a maths lecturer. What number should go in the place of the question mark in this mathematical sequence: $..., 30, ?, 60, 90, 140, 225, ...
6
votes
3answers
272 views

How to solve this number-sequence?

My friend gave me this fun puzzle to solve but I still cannot figure out the logic between them... 1,3,4,7,8,11,14,15,19,22,23,25,26,?,?,?,? Could anyone help me solve it?
11
votes
2answers
2k views

Which number replaces the question mark in the circle?

While solving the number puzzle, I couldn't find any solution for this problem. Please help me solve it and briefly explain your answer. Which number will replace the question mark in the circle below?...
1
vote
2answers
192 views

Sequence made of symbols

(My friend in real life gave me this)That's the original sequence: ⬅↕➡,⬅↕,➡,⬅,?,?,↕➡ I'm going to use other symbols to make it readable: (/), (/,), (/, ?, ?, /) I've noticed that the comma ...
5
votes
2answers
168 views

Two, completely independent, means exist to obtain the same answer

... one "local"; and one "global" 1) 1 + 1 = 2 2) 2 + 1 = 4 3) 3 + 2 = 9 4) 5 + 3 = 17 5) 7 + ?? = 32 Can you determine the correct answer ...
1
vote
2answers
127 views

alphanumerical sequence Correct one

I have tried to solve this sequence which, I suppose has been created from the combination of a,b,c,d,e. I've reposted the correct sequence The sequence: (a,c), ?, ?, ?, (a,e), ?, ?, (c,d), ?, (b,...
14
votes
3answers
1k views

A Simple Number Sequence

What would be the next digit that follows these numbers? 1, 11, 20, 30, 7, 49, 42, 23, 3, ? Just so it's clear, you won't need any mathematics to solve this at all! In fact, everything you ...