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Questions tagged [sequence]

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

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1
vote
4answers
435 views

Which come next in these visual logic sequences?

I took these puzzles from Jim Barrett's book How to Pass Advance Aptitude Tests. I found this bunch not that obvious to answer. Can you help me find the right choice for each sequence and explain your ...
-5
votes
1answer
61 views

Commonality of squared sequence terms [closed]

Let's have the following two sequences: (S1) 6, 24, 90, 336, 1254, 4680,..... (S2) 12, 42, 156, 582, 2172, 8106,.... What do the squares of the numbers in the second sequence have in common? HINT: The ...
0
votes
1answer
278 views

What number comes next in 2, 4, 5, 3, 10, …

2, 4, 5, 3, 10, 11, 13, 7, 5, 28, 29, 31, 35, ??? I tried plugging it into Wolfram Alpha which couldn't find any pattern, and I'm still not too sure how to determine what number comes next. Any ideas?...
6
votes
2answers
996 views

I need another shape 💠

Given the pattern above, which shape is next, and why?
16
votes
1answer
577 views

You can count on Sergeant Sequence

"Ah, Sequence, there you are," said the Chief Investigator as Sergeant Sequence entered the briefing room. "Your man Patrick Terne is on the move again, and we need your help to track ...
25
votes
1answer
1k views

A predictable sequence

"Four, four, four, ..." droned the random number generating monster. "Are you sure that's random?" I asked. "That's the problem with randomness, you can never be sure!" ...
0
votes
0answers
539 views

What is the next term in QOP, UYR, TRT, GHV?

What is the next term in the sequence: QOP, UYR, TRT, GHV? The choices are: A. TMY B. UYT C. UUT D. MNO The question is from an MDCAT sample test. I don't know the answer or how to get to it.
-2
votes
3answers
160 views

Sequence with all terms divisible by 8

Let's have the following infinite sequence 3968, 13224, 30624, 59048, ? What is the next term, replacing the question mark? Why are all the terms of this infinite sequence divisible by 8?
0
votes
1answer
97 views

Mount Olympics?

A friend sent me the following sequence of numbers with the above title. They said it took them, and their friend wiki, 37 summers to frame it. 83, 55, 45, 44, 37, 36, 48, 46, 46, __ Can you help me ...
14
votes
1answer
1k views

A Harry Potter sequence puzzle

What is the next term in the following sequence based on Harry Potter? None, 16, None, 16, 5, 9, ?
2
votes
2answers
302 views

Colorful Puzzle

This puzzle is based on the squares before the one that says, "what color is this?". This is a sequence of squares, try to follow the rule(s) for the puzzle. Can you solve it?
4
votes
2answers
277 views

Colorful Pattern Puzzle with Arrows and Warning Signs

This is my first time on Puzzling Stack Exchange. I challenge you to solve this puzzle I made, impossible to everyone else except for me as far as I know. Can you solve it?
1
vote
2answers
167 views

Numbers sequencing and decoding... (#1)

Part 1: Q1,E2,T3,U4,O5,A6,D7,___ Find ___. Clue: draobyek Part 2: ode coded math is slogan done bans were math eroded question: eco desperate minus 14362 i22096 up ____ down. eulc? Clue: Word sin ...
6
votes
1answer
745 views

What's the last number in my wordy number sequence?

I have a wordy number sequence, partially shown below: $ {1, 45.2548, 1262.6650, 32768, 390625, 10077696, 282475249, 3037000499.976, 31381059609, ... }$ Can you find the last number in the sequence? ...
22
votes
1answer
1k views

A Sequence That Keeps Changing?

So I get this special sequence of "items" as the following: 2 1 3 4 7 8 2 5 2 3 9 But look! If I put some numbers (randomly) in front of the sequence: 3 4 2 1 3 4 7 8 2 5 2 3 8 And yeah! ...
5
votes
0answers
177 views

Sequence puzzle: 3, 9, 27

A twist of the classic sequence game: A friend asked me to find the rule to this sequence: 3, 9, 27. I am allowed to suggest other sequences to test if they follow that (unknown to me) rule, to which ...
3
votes
2answers
416 views

Find the next number: 1, 9, 19, 30, 41.5,?

What is the next number in the list, and what is the secret formula for this list? 1, 9, 19, 30, 41.5, ?
2
votes
0answers
114 views

Sequence of rectangles/circles with blue lines (straight/zigzag) and small red triangles/circles inside [closed]

I saw this question in an IQ test, but I have no idea after thinking for very long time.
2
votes
0answers
122 views

Encrypted code with colours and letters. Can you identify the code, I have the possible key [closed]

I have a code that I can not break. It has been looked at for such a long time and I have tried to solve what might be the content or message. I recently was made aware that the alleged key for the ...
3
votes
2answers
205 views

Square sequence puzzle 3

Find what comes next in the following sequence: 1,4,9,6,0,8,8,8,8,0,2,6,0,0,? Bonus 1: What is the rule? Bonus 2:
4
votes
1answer
205 views

Square sequence puzzle two

Find what comes next in the following sequence: 0,1,4,9,7,7,9,13,10,9,1,? Bonus: What is the rule?
-4
votes
2answers
126 views

Square sequence puzzle

Find what comes next in the following sequence. 01, 04, 09, 16, 25, 36, 49, 64, 81, 00, 21, 44, 69, 96, 25, ? Bonus: What is the rule of the sequence?
15
votes
1answer
337 views

Chess A Knight's Journey

You'll need to know about: A game that has existed for over 1500 years A game that doesn't exist ♞ → I → II → III → ... Answer = Xxxxxxxxx
2
votes
1answer
238 views

Pythagorean triplets generated in a unique way

Let's have the following sequence of Pythagorean triplets $25^2=24^2+7^2,1201^2=1200^2+49^2$, $58825^2=58824^2+343^2, ?, ?$ What are the next two triplets in this sequence? How have these triplets ...
2
votes
2answers
227 views

Two sequences in one

The following sequence of numbers is related to two well known sequences in the OEIS, the On-Line Encyclopedia of Integer Sequences: 3, 4, 7, 10, 16, 21, 30, 40, 57, 84, 120, 181, 274, 420,... a) ...
-1
votes
1answer
146 views

Another Sequence of Sequences [duplicate]

Examine the following seven sequences of numbers: 1 11 21 1112 3112 211213 312213 What are the next seven sequences of numbers? What is the hundredth sequence in the series? Puzzle by the late ...
4
votes
2answers
317 views

Finding the root of a basic sequence

The sequence starts with the following: a1 = 1, a2 = 2, a3 = 5, a4 = 4, a5 = 6, a6 = 10, a7 = 9, a8 = 8, a9 = 21, a10 = 12, a11 = 13, a12 = 20, a13 = 33, a14 = 15, a15 = 42, a16 = 16, a17 = 19, a18 = ...
-1
votes
1answer
161 views

Your typical math sequence

1, 2, 16, 4, 16, 16, 52, ?, 52, 16, 52, ?, 40, 52, ? What are these question marks? a) 8, 16, 160 b) 16, 8, 190 c) 52, 16, 160 d) 8, 25, 90 e) Impossible to determine
3
votes
1answer
253 views

Patterns - they're everywhere!

You wake up in a room (again) that has two floors, Both have 3 puzzles. In order to escape, You have to find every answer in this order: Red Yellow Green Cyan Navy Pink and combine it together (eg if ...
-1
votes
1answer
176 views

Sequence of large numbers - 97613377, 239783652

Let's have the following sequence 43, 108, 5737, 13932, 97613377, 239783652,? What number belongs where the question mark is? HINT: The next number is 28693771291496497. What is the next term after ...
0
votes
1answer
157 views

What is the next diagram, and what is the number?

I needed some help to a friend of mine, he was solving a puzzle. He sent me a remake of what he was solving, and its up to you to help my friend! Note: My friend says that he messed up at 32, there ...
1
vote
1answer
999 views

Next in the number sequence problem: 20, 21, 33, 68, 172.5, 520.5

20, 21, 33, 68, 172.5, 520.5, ? What will come next in this number sequence problem?
-4
votes
1answer
74 views

Expressing values of irrationals in the form of fractions

Let's have the following sequence of fractions: $\frac{24}{17}, \frac{816}{577}, \frac{941664}{665857}, ?$. What is the next fraction in this sequence?
5
votes
1answer
206 views

Unusual sequence of fractions

Let's have the following sequence of fractions: $\frac{156}{51}, \frac{756}{251}, \frac{3756}{1251}, ? $ . What fraction replaces the question mark?
0
votes
1answer
72 views

Sequence of boxes with a rotating arrow, large (un)shaded circles in the corners, and a small circle [closed]

What is the next image? The small circle seems to follow the arrow, which would eliminate C and E.
2
votes
1answer
128 views

A math sequence, but also a English sequence!

What are the numbers in the question marks? 0, 1, 2, ?, 5, 6, 8, ?, 40, 46, 60, ?, 84
3
votes
1answer
258 views

Not a Fibonacci sequence

What is the next term in the sequence? 1, 1, 2, 3, 5, 8, 18, 34, 60, 120, 214, 394, 788 hints: #1
2
votes
3answers
150 views

Specific numbers and a blank box

There are 2 rows of numbers shown below. Which number belongs to the blank box with a question mark? Please choose from the three options stated. Why were these particular numbers chosen?
32
votes
3answers
2k views

Should You Take the Pill?

An entry in Fortnightly Topic Challenge #50: Escape Rooms Your head is throbbing like mad. You try to get your bearings as you look around the laboratory. Shattered beakers and spilled chemicals are ...
2
votes
3answers
712 views

What number follows the sequence?

I was taking a job application exam online and encountered a pattern I couldn't solve. ? 26, 13.2, 3.6, 2, 1.2, ? What number comes next? Answer choices were: 7.2 5.4 6.4 6.8 7 6.6 I guessed 6.6 due ...
9
votes
2answers
345 views

Wordsmiths & Wyverns

You awaken in a foul crypt with only the following items at your disposal... ROPE, BOOTS, AMULET, MAP, FLAIL, CHAIN, CUP, BELL, STAFF, RING, CODEC, RUM, FLUTE You also have the following tools. Awl (...
1
vote
1answer
285 views

What letter comes next in the sequence A, P, I, W, A, T [closed]

What letter comes next in the sequence: A, P, I, W, A, T, ?
-5
votes
1answer
100 views

Letter sequence - B, D, H, P,? [closed]

Complete the sequence B - D - H - P _: a. F b. M c. V d. Z e. None of the above is correct. Source I tried to build a sequence based on the distance between the letters, but I didn't get anything ...
-3
votes
1answer
87 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. ...
5
votes
1answer
283 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 ...
4
votes
1answer
263 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 ...
1
vote
2answers
190 views

Graphical pattern - 5x5 grids with "x"s

A friend of mine made this puzzle. You should find the pattern that explains the movements of the 'x' and find the next item in the sequence. You should draw it in the white box on the right. Hint: ...
-4
votes
1answer
56 views

Simple Graphical sequence

I created this - what do you think should be drawn as the next shape?
14
votes
1answer
684 views

This puzzle is a loss

What should replace the question mark on this list? JBNRS, HF, GM, JPD, VL, AELMP, MS, WB, CB, GS, EC, SV, PD, PEJP, ?, … Hint, added later: Hint, added even later:
1
vote
2answers
118 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 ...