Questions tagged [number-sequence]
A puzzle in which the hidden pattern behind a given sequence of numbers (and, often, the next term) is to be found. Use with [sequence]
931 questions
9 votes
2 answers
539 views
Complete the integer sequence: 10, 11, 12, 13, 14, 20, ?, ?, ?, ?
Here is a sequence I happened to work out, although I am certainly not the first one. Can you fill in the missing numbers? 10, 11, 12, 13, 14, 20, ?, ?, ?, ? NB: The sequence ends after the last ...
- 91
0 votes
0 answers
79 views
Shadowed Dragon Ciphers: #2
This is the SHADOW Cipher in a small sample. One of my hardest, Good Luck!: Z+b s v k v x w z d o x -The Shadowed Dragon
2 votes
1 answer
358 views
A Cypher I Created: U+74 U+48 U+65 U+20 U+72 U+65 U+61 ...
This is a compound cypher meaning it is several cypher methods inside of each other. U+74 U+48 U+65 U+20 U+72 U+65 U+61 U+70 U+65 U+72 U+20 U+69 U+73 U+20 U+43 U+4F U+6D U+69 U+4E U+67 U+20 U+61 U+4E ...
-4 votes
1 answer
170 views
3 votes
1 answer
467 views
What number is next? 40, 0, 2, 1, 0, 10, 50, 4, 0, 16
What number comes next in this sequence? 40, 0, 2, 1, 0, 10, 50, 4, 0, 16 Answers must have an explanation of why the next number is what it is. Hint:
- 4,590
0 votes
0 answers
211 views
That's not a Puzzle @JKHA!
You are forbidden to comment: that's not a puzzle @JKHA! And all the tags are wrong! Otherwise, I will answer: 13th of July 2025 A B C D E. Puzzle Explain why the tags are correct.
- 7,968
7 votes
1 answer
515 views
This is not about the last century...
1926 $\longrightarrow$ 19 1927 $\longrightarrow$ 16 1928 $\longrightarrow$ 20 1929 $\longrightarrow$ 19 1930 $\longrightarrow$ 19 1931 $\longrightarrow$ 15 1932 $\longrightarrow$ 18 1933 $\...
- 7,968
3 votes
2 answers
566 views
connections with numbers II
You are given the following 4 by 4 grid of numbers. Create four groups of four numbers such that the numbers in each group share some common property. This puzzle is a (hopefully harder) sequel to ...
- 1,101
7 votes
2 answers
684 views
connections with numbers
Next puzzle You are given the following 4 by 4 grid of numbers. Create four groups of four numbers such that the numbers in each group share some common property. (The placement of numbers in the ...
- 1,101
8 votes
1 answer
384 views
What is a Short Integer™?
No, a Short Integer™ is not a Short Integer! If an integer conforms to a special rule, I call it a Short Integer™. Each integer can be tested. This is not a definitive list of Short Integers™. Short ...
- 7,968
6 votes
2 answers
690 views
Circle with five regions labelled 50, 122, 5, 10, ?
This question was in CUET UG exam this year.
- 187
13 votes
2 answers
877 views
A Nob Yoshigahara number sequence puzzle (Tribute to Martin Gardner)
What number belongs at ? in this sequence? 24 28 33 34 32 36 35 46 52 53 13 11 17 16 18 14 22 ? 33 19 24 Attribution: Nob Yoshigahara in The ...
12 votes
2 answers
1k views
Make him shuffle most!
James is a dealer who can only use overhand shuffle1). For some reason, you decide to harass on him. You know that he is playing a “stacked deck” with some player. You are also good at it, so you ...
- 5,182
29 votes
1 answer
1k views
The CXV sequence
This infinite sequence uses simple English and mathematics. Find the next term. 2, 2, 6, 4, 4, 2, 6, 6, 4, 2, 9, 8
- 74.5k
7 votes
2 answers
272 views
Find next four digits in the ternary sequence
I generated this sequence 2102012210101111222011212000200220212200120102112020222211102212100010011012, find next 4 digits and explain the reason. Note that this is a ternary sequence. All digits are ...
- 1,730