Stack Exchange Network

Stack Exchange network consists of 174 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 finding the hidden pattern in a given number sequence.

4
votes
1answer
49 views

A real-world puzzler - find the pattern!

This is a bit of an unusual puzzle - one that is purely "real world" :) My console can produce a load of colours. But I can't find any obvious way to relate the colour to its number. I'd hoped that ...
0
votes
3answers
165 views

Haters will say 28 June

Find the next number in this sequence: $4,3,7,5,10,15,?$ Think outside the frustum here. Hint: This has to do with a ratio that is of a kind that Pythagoras and his followers didn’t like.
7
votes
5answers
524 views

The Legend of Four

As far as I know, all numbers have a root of 4. What I mean by this is as follows: Starting with any number, for example 384, I take the number of letters in that number. Then I repeat this process ...
2
votes
2answers
328 views

Another Number Sequence Riddle

Here is another number sequence riddle for you all: 4, 2, 7, 6, 8, __, __, and so on. What numbers go in the blanks?
3
votes
1answer
119 views

Mind the…(number seqeunce)

Find the next number in the sequence: 2, 3, 7, 23, 89, 113, ? Hint:
-5
votes
1answer
83 views

Logic Puzzle: Solve and Provide Explanation [closed]

Please solve the logic puzzle above and provide an explanation for your reasoning.
2
votes
1answer
142 views

Find the missing numbers 1, 3, 6, ?, ?, ?, 45, 55

1, 3, 6, ?, ?, ?, 45, 55 I asked the person who gave this to me and they assured me that it's correct. After an hour, I've given up :(
5
votes
1answer
204 views

Find the next number in the sequence?

1 = 1 2 = 12 3 = 27 4 = 44 5 = 35 6 = ? The only hint I got was:
4
votes
2answers
207 views

A small set numerical puzzle

Three, Twenty-one, and forty-five start this list that has arrived. ---edit for a little more clarity--- Ninety-one and one hundred and twenty. Then we get to the doubly interesting number....
1
vote
0answers
126 views

What is the next sequence of numbers?

Seven and seven is forty-two, Eight and nine are fifty; Ten and eleven are sixty-two, And twelve and twelve are five. What is the next sequence of numbers?
0
votes
0answers
80 views

hard Numerical sequence

I need help to figure out what values should be put instead of the ? that's the sequence: ?, 36, 36, 18, 16, 14, ? I've tried to find a pattern and the only thing that I could think of was a ...
0
votes
1answer
45 views

Special rhombii

There are two parts to this puzzle, but I am posting the other part tagged with ‘mathematics’ because it isn’t really a number sequence problem. Part I Find the next number in the sequence: 1,2,3,7,16,...
2
votes
2answers
128 views

Cyrus' Adventure (Part 1)

Cyrus is on an adventure to the deep unknown forest, in order to get the mysterious treasure box. After walking for a few days, he found out that a strange door was blocking his way, and there weren't ...
2
votes
1answer
62 views

Ashley and MK, number sequence

What’s the next number in the sequence? $4, 6, 12, 18, 30, ?$ This one is pretty easy, so I will post the answer in a few days if no one gets it.
4
votes
1answer
178 views

Don’t be arbitrary

What’s the next number in the sequence? 2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 10, ? P.S I’m new, so tell me if the question was too hard or too easy.
-5
votes
1answer
49 views

Next number in the following sequence [closed]

1, 2, 3, 5, 8, 13, 21, and so on. Find the next digit.
2
votes
1answer
251 views

Find the next number in the series

Can you find the next number in the following series ? 2 , 0 , 3 , 5 , 25 , 119 , ?
0
votes
1answer
73 views

Number Sequence (hope it is not too hard)

Complete this number sequence 1, __ , 2 , 6, 120, 40320, 6227020800 , __ , 2.952328e+38, __ , __ , __ Can you do it?
1
vote
3answers
122 views

Finish the sequence (hopefully not too easy)

This is a number sequence. Can you guess the right answer? GOOD LUCK :) 0,1,2,4,14,21.... Can you guess the next 4 numbers?
3
votes
1answer
162 views

What is the next term of this sequence?

What is the next number? $$2,3,10,12,13,20,?$$
8
votes
1answer
1k views

Staying grounded

I found a somewhat meaningful sequence that is not on OEIS yet, incredible! Here are the first 100 numbers of this sequence: ...
7
votes
1answer
225 views

Unlucky thirteen

These two separate sequences use the same rule and stop at the 13th term. 2, 1, 8, 5, 2, 5, 8, 6, 7, 9, 7, 7, 0 3, 1, 5, 3, 9, 2, 4, 3, 9, 7, 3, 1, 0 These examples are produced when the ...
2
votes
1answer
168 views

Please find the missing number in the question [closed]

Find the missing number, and show how you found it.
-4
votes
1answer
84 views

solve it if you can [closed]

n = 11, j = 1, s = 9, m = ? If you solve it you are a genius.
27
votes
1answer
2k views

That gap is a bit jarring

... but there doesn't seem to be anything missing. $0,1,2,3,4,5,6,7,1527465$ What then could cause that rather large gap?
1
vote
1answer
153 views

Number sequence 124, 536, 1189, ?, 4126

I need your help to solve this sequence: 124, 536, 1189, ?, 4126 I found out a lot of strange things like: 536-124=412, and so the same numbers as 124, but with 4 first and then 12. 1189-536=...
11
votes
2answers
617 views

A sequence of peculiar palindromes

My son Robin came up with this: 0550, 1001, 1111, 1221, 1331, 1441, 1551, 2002... What are the next 4 numbers? Solve it today!
2
votes
2answers
116 views

Number sequence 6

Fill in the correct number in this sequence: $16,32,40,88,92,172,?$ The options are: $178$,$176$,$174\frac{2}{3}$,$177$, and $175\frac{1}{3}$ At first, I thought the pattern was $2x+8$ but that ...
5
votes
1answer
611 views

The “Evan” Numbers

The Even numbers are simple: $2, 4, 6, 8, 10, 12, \dots$ The "Evan" numbers follow a tricky rule: $2, 4, 6, 30, 32, 34, 36, 40, 42, 44, 46, 50, 52, 54, 56, 60, 62, 64, 66, 2000, 2002, 2004, \dots$ ...
8
votes
1answer
150 views

Producing Integers

Came up with the idea for this one while I was scratching my head over another "what comes next" puzzle here on Puzzling.SE I wrote a small application which takes an integer and returns another ...
4
votes
2answers
143 views

Arrange 18 numbered cards in a special way

Given 18 cards with numbers 1 .. 9 on them (two cards with each digit), arrange them sequentially so that the distance between the identically marked cards is equal to the number written on the card. ...
10
votes
1answer
780 views

Calling all number sequence lovers!

What number follows in this sequence 93 1 855 45 593 500 241 ?
1
vote
0answers
42 views

Sequence puzzle in rows [duplicate]

The below is a number puzzle. It should be read left to right, top to bottom. Question 1: What is the next two rows of numbers? Question 2: How was this reached?
8
votes
2answers
1k 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?...
7
votes
6answers
2k views

Through which number we can remove the question mark?

I'm trying to solve this puzzle but so much confused and can't understand even.Please help me to solve this puzzle and also explain briefly.
10
votes
1answer
1k views

Which two numbers replaces the question mark?

I was solving some number puzzles. I am finding difficulty in solving this puzzle: which two numbers will replace the question marks? I need answer with explanation.
9
votes
1answer
280 views

Replace ? by number

This chain of numbers is making confused.Help to find the answer with explanation.
0
votes
1answer
189 views

Number puzzle - Next number in the sequence

I did a puzzle that made me calculate the last number, and I couldn't figure it out so I looked at the answer, but still don't understand how I get to that answer. Number sequence is ...
3
votes
1answer
227 views

Sequence of numbers 6

Fill in the correct number in this sequence: \begin{array} & 3 & 4 & 2^2 & 5 & 10 & 60 & ? \end{array} The options are Source: a publicly available practice test in a ...
1
vote
2answers
318 views

What is the next number in the given series?

I know that next number questions are not popular here, but this one is tough and I couldn't figure out the pattern. To give an idea one of the questions had a pattern of Prime(Fib(n)). So this is ...
-5
votes
2answers
73 views

MATH PUZZLE ABOUT SEQUENCE [closed]

In the array of numbers below, each number above the bottom row is equal to three times the number immediately below it. What is the value of x+y? ...
0
votes
3answers
248 views

What number should be next? (hints added) [closed]

1 2 3 4 5 10 13 22 103 □ Identify □ one more number added due to OEIS hint 1 : hint 2 : hint 3 :
0
votes
4answers
319 views

What number should come next?

1 3 10 12 14 21 ◇ Identify ◇
5
votes
2answers
191 views

Puzzle in a Newspaper

The newspaper I got this morning was a little off, to say the least. The main headline proudly read: Horse squeals eight times, dubbed "octsqueal" Well, I decided to ignore that, and head over ...
8
votes
3answers
2k views

FBI number riddle

A friend sent me this riddle and I can't figure out a solution: January = 251017 February = 25628 March = 81335 April = 12145 May = 251353 June = 51064 July = 251074 August = 20186 ...
6
votes
1answer
87 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 ...
37
votes
2answers
3k views

It's my birthday

Just like last year, my age is a number you can score with one dart. The year before that, it wasn't, and it won't be next year. How old am I?
0
votes
1answer
200 views

Ad-hoc number sequence to solve 3

Learning from each prior question I've designed. Working toward a standard-style question, though not quite there yet. In the interim, here's a tester.. 12, 15, 19, 29, 44, 51, ... ? Your options ...
2
votes
2answers
138 views

An ad-hoc number sequence to solve 2

Continuing on from my last effort, let's try something new. "7, 14, 29, 62, 132," have I, but now what should I do? Which number comes next? Hint - mouseover if you want to see the next number in ...
6
votes
1answer
191 views

An ad-hoc number sequence to solve

Inspired by another question here, I thought I might create my own: Fill in the correct number in this sequence: 5, 3, 4, 9, 8, 3, 5, ... And of course, explain why :)