# Questions tagged [number-sequence]

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

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180 views

### Missing numbers in triangular sequence

I am not sure if this is an appropriate puzzle for this site, but I searched and found 1 or 2 other types of puzzles like this. This is an original puzzle. Find the missing numbers in rows 8 through ...
131 views

### Find the missing term in 3×3 table

8 10 9 ? 15 28 7 12 13 Possible answers: A) 9 B) 10 C) 11 D) 12 Correct answer: Please explain how to solve this question? Source: NTSE stage 1 rajasthan ...
62 views

### Sequence represented by fruits

A person is confused about how a mathematical sequence works, to explain to her, her teacher does not use numbers and turns into sets of fruits. Which sequence is being represented by the teacher? a. ...
212 views

### $a_n = 2n^2, n \geq 1$ (modified)

The puzzle asks to determine the next term in the sequence 2, 4, 8, 0, 0, 16... a. 32 b. 18 c. 20 d. 24 e. 0 The obvious answer for me would be 32, with these zeros serving as the "neutral ...
306 views

### What's the next number in this sequence? 7, 30, 84, 81,? [closed]

I got this question in an online assessment for a job interview, and it's still puzzling me. This is the sequence: 7, 30, 84, 81, ? Possible answers are: -77, -93, 106, 73
47 views

### Continue the numeric sequence [duplicate]

Can you continue this sequence? If you can get the next few numbers in the sequence, you can just about as easily double the length of the sequence: 3 3 5 4 4 3 5 5 4 3 6 6 8 8 7 7 9 8 8 6 9 ... ...
211 views

### Number Sequence (yet again?)

This number sequence has numbers rounded to the nearest tenth. 1, 2, 4.5, ?, 26, ? Find the pattern and the answers to the question marks rounded to the nearest tenth.
234 views

### Numerical sequence - 11, 89, 17, ?, 47, 62, ?, 10, 0 [closed]

My friend from Math Stack Exchange gave me this sequence. He said that it isn't strictly a mathematical sequence, and that I need to find a pattern and then fill the question marks. These are the only ...
218 views

### Primes Number Sequence

Find the pattern in the sequence: 10 11 21 247 29 391 ? ? ?
312 views

### Math sequence. What number comes next?

I have created a pattern that is fairly interesting. It is discoverable from a geometric shape. The sequence begins: 1,2,4,9,1,18,1,2.... It is a repeating pattern. It could be an infinite repeating ...
257 views

### A rather odd number sequence!

Can you find the next number in this baffling sequence? 925, 955, 1040, 1140, 1255, 225, 410, ?
162 views

### What are the following numbers?

The number sequence goes like this: 3412, 361, 51, 5312, 5342, 531, ...... What are the following FOUR numbers in this sequence? Absolute hint: Hint 2:
138 views

### What is the missing digit in this 3x5 table?

The problem is as follows: The figure from below shows a sequence of numbers ordered in a tabular form. Find the next term labeled x. Transcription: 4, 3, 2, 5, 6 5, 6, 9, 2, 4 11, 9, 7, x, 14 The ...
93 views

### Two sequences with more than one logic

Find the missing terms in the sequences below 5, 7, 11, 15,...? A) 23 B) 28 C) 25 D) 19 10, 11, 19, 23, ?, 41... A) 24 B) 28 C) 31 D) 37 Interestingly, the exercise presents alternatives. I believe ...
681 views

### Find the next term of $\frac14,1,\frac94,2+\frac2{\sqrt{3}}, \frac{5}{2} + \frac{5}{2 \sqrt{2}}, 3 + 3 \sqrt{\frac{1}{10} (5 + \sqrt{5})}$

You are given the sequence: $$\frac{1}{4}, 1, \frac{9}{4}, 2 + \frac{2}{\sqrt{3}}, \frac{5}{2} + \frac{5}{2 \sqrt{2}}, 3 + 3 \sqrt{\frac{1}{10} (5 + \sqrt{5})}$$ Transcription: one fourth, then one, ...
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### Roulette pattern

Mary was playing bingo when she noticed a logical sequence in the numbers of the balls as they came out. The numbers of the balls, in the order they came out, are shown below. 55, 52, 51, 48, 47 If ...
105 views

### Four sequences with similar pattern of beginning

Determine the missing number in the sequences below $7, 9, 13, 17, ?, 29,... \\ 6, 8, ?, 16, 24, 28,...$ $8, 11, 29, 51, 125, ?, 293,... \\ 9, 11, 30, 51, 126, ?, 294,...$ I apologize for the ...
48 views

### Sequence with sum of digits

What is the sum of the digits of the numbers $x$ and $y$ in the sequence $335, 333, x, y, 318, 307, 294, ...$? Source: Handbook of Codes and Sequences with Applications in Communication, Computing ...
549 views

### What does this geometric objects combinations mean?

You see combinations of geometric objects from a circle, a triangle, a square, a rectangle and a diamond and corresponding them numbers $4, 6, 19, 190, 1900$. Question Can you define the number for ...
183 views

### A unique sequence solution [closed]

Let's have the sequence 127,191,255,319,383,... This sequence is formulated by adding the number 64 to the last term to obtain the new term e.g 127+64=191 and so on. There is another special way to ...
133 views

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### The mage's safe

After fighting hordes of undead, slaying several gargoyles and finally dispatching of the evil necromancer himself, the adventuring party finds itself in the treasure vault beneath the mage's tower. ...
312 views

### History function

Can you tell the next element of this history function? It is meant and important that mathematics tag isn't here! I save you the time to search on OEIS, you won't ...
90 views

### A meaningful sequence of numbers

The following sequence of numbers is related to a famous Conjecture. 17, 188, 94, 47, 518, 259, 37, 408, 204, 102, ? Could you find the next number in the sequence?
88 views

### NSE number sequence with 0s and 1s [closed]

I am not here to spam. I have been trying to solve this sequence but I cannot. This is from the NSE website: https://free.ultimaiq.net/nse.htm 011010, 100010, 100010, 100010, 000010, ?, 100010 I ...
1k views

### 849, 352, 768, 493, 527 - Unusual number sequence problem

The sequence is: 849 352 768 493 527 This one has been puzzling me for days. I would appreciate any insight.
94 views

### 119, 019, 609, 809, ?, 909 - A number sequence

This is probably very elementary for seasoned puzzlers yet I must request assistance with the following sequence: 119, 019, 609, 809, xxx, 909 What is the underlying principle here? Edit: Source: 2.2.,...
199 views

### Z1 = 1, Z2 = 36, Z3, Z4 = 38346, Z5 = 1246285 ā¦ Zn, find Z3 and Zn?

$Z_1 = 1, Z_2 = 36, Z_3=?, Z_4 = 38346, Z_5 = 1246285, ...$, find $Z_3$ and $Z_n$? For info I have already $Z_n$; I just want to compare the results. And if you want more value from this series I can ...
336 views

### A Collatz Conjecture for a Classic Conundrum

There is a famous puzzle that asks for the next line (and the rule) for the following pattern: 1 11 ...
128 views

### Mathematical sequence puzzle

Bob is trying to crack a puzzle. He finds this numerical sequence: 9056, 528, 64 What should he input after 64?
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### The meaning of the related numbers

Question: What follows in the sequence below? 10233432943 As a hint, I must say I do not like the single 1 in it. It is unclear if the sequence even started with 1, but the 1 it needed. I had to ...
53 views

### Non-mathematical number sequence [duplicate]

Side question. I think I have never seen this sequence after my father posed the problem to me decennia ago. So apart from the solution, I would like to know if someone has seen it before. Note: Below ...
328 views

### Twenty Troubles

What does this list represent? 20 (e.g.) 20 (exactly) 20 (compared to 350) 20 (compared to 3) 20 (e.g.) 20 (when scored by the NY Giants in 1991) 20...21...22...23... 20 (when the last in this list) ...
122 views

### Formula for the sequence 1, 1, 1, 21, 3, 1, 4, 1, 5, 1, 6,

The sequence 1, 1, 1, 21, 3, 1, 4, 1, 5, 1, 6, ... appeared in one of my tutorial sheets in 2019. I assumed that the fourth term, 21, was a mistake (was supposed to be ..., 2, 1, ...) then it made ...
131 views

### A number sequence with a specific property

The following increasing number sequence follows a specific number property: 1 2 3 8 10 11 12 13 20 21 22 30 31 68 ... Find the property and the next two numbers
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### Number Pattern Question

(Source: Asian Maths Olympiad 2015, Year 3) Given the first two circles, what's the answer in the blank space? I've tried using all basic operations but no pattern seems to work for all three. Any ...
53 views

### Completing a table of numbers

(This is a question from a basic IQ preparation test) What can be the next column if we consider the following table of numbers? 86 65 44 X 93 64 35 Y X=23, Y=06 X=26, Y=03 X=03, Y=26 X=06, Y=23
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### 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.
104 views

### Sequences: terms before and after

Let's have the sequence 26,135,701,3640, What are the first two terms of this sequence and what number follows 3640?
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### Fill in the missing number in this unique sequence puzzle

My friend Ed woke up this morning to find his website defaced. Upon the now altered web page, he found this number sequence: $237,\ 3566,\ 57069,\ \color{green}{???},\ 14600926,\ 233811181$ One of the ...
103 views

### Please complete this number sequence

(This is my original puzzle) Can you work out the number that fills in the question mark? 1,9,216,10000,?
159 views

### What number should be placed instead of the question mark?

There is a specific and common relationship between the numbers of each rectangular shape. What number should be placed instead of the question mark?
211 views

### Board of Important Numbers

I was visiting my cousin, a mystery writer and lover of puzzles, when I noticed this list of numbers on her white board. 13,814,070 26,818,110 86,811,060 18,819,190 10,914,190 33,915,010 36,912,211 ...
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### Is it possible to create a bot for Kami [duplicate]

Not sure if this is the best place to ask this question (or game theory). There's a mobile game called Kami where you have to make the screen one color. The initial state is a series of different ...
288 views

### Sequence Puzzle - First Question of 42

Professor Tera was walking on Connecticut Road, where there are some public restrooms. Tera saw some students standing in a row. They seemed to be playing a game called Evolution. And it looked like ...
131 views

### Weird Sequences [closed]

Found this weird sequence: $$8110423, 259974, 9814143, 5512166, 113322, ?$$ The possible answers are: a) $334455$, b) $7911132$, c) $9841233$, d) $872236$. The correct answer is b), but I can't figure ...