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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]

2 votes
1 answer
210 views

Please find the next number in this sequence: 121, 25, 36, 49, 16, 9,?

Here is the sequence: 121, 25, 36, 49, 16, 9, ? What should be written instead of the question mark? Note: Angles in a clock (seconds aren't considered)
Etack Sxchange's user avatar
4 votes
1 answer
213 views

Finding the next number in this sequence: 184275, 8292375, 3108105, ...,

I created this puzzle myself. Find the next number in this sequence and explain: 184275, 8292375, 3108105, 54729675, 147349125, 1587160575, 24135786675, 20906353125, 214266677625, 1676096296875, ...
Lucenaposition's user avatar
2 votes
8 answers
917 views

Find a more elegant explanation for the sequence 01, 10, 13, 20, 25, 30, 37, 40

Some sequences like 1, 2, 4, 5, 10, 11, 22, ... can be explained by a two-part rule: Consider the following sequence: S = 01, 10, 13, 20, 25, 30, 37, 40, ... It is fairly easy to find a two-part rule ...
Will.Octagon.Gibson's user avatar
4 votes
1 answer
213 views

What number completes the sequence? 2, 1, 7.5, ...,

What number completes the sequence? 2 , 1 , 7.5 , 6.5 , 5 , 6.5 , 7.5 , 5 , 6.5 , 7.5 , 1 , 6.5 , 7.5 , 6.5 , 5 , 4.5 , ...
Cristof012's user avatar
0 votes
1 answer
128 views

What is the pattern in the sequence? -1, 3/2, -13/6, 25/8

It happens to be useful to me to understand the pattern in this list of numbers: $$-1, \frac{3}{2}, -\frac{13}6, \frac{25}8, -\frac{541}{120}, \frac{1561}{240}, -\frac{47293}{5040}, \frac{36389}{2688},...
Jack's user avatar
  • 111
2 votes
1 answer
111 views

Number sequence puzzle: 14, 32, 69, 05,?

I made this puzzle on my own, feel free to solve it. Sequence is as follows: 14, 32, 69, 05, ?
Fraternal9274's user avatar
-1 votes
1 answer
159 views

Numerical sequence 942, 138, 424,?

Homemade number sequence puzzle, quite easy. Sequence: 942, 138, 424, ?
Fraternal9274's user avatar
3 votes
1 answer
300 views

Number salad with a meaning

617181419920141 128131119 1331152419 54141131811 Your goal is to explain what number sequence should come next and what it means.
Kathi's user avatar
  • 367
2 votes
1 answer
124 views

Meaning of sequence 11011010000000111000000000

What is the meaning and significance of the following sequence of digits? 11011010000000111000000000 Hint:
Roy Sianez's user avatar
0 votes
1 answer
259 views

Numerical sequence puzzle: 552175, 228496, 198479, 583317, 140554, 114383, 117045, ?,?

So here's the sequence, that I composed on my own. Think trees and 🟡 : 🟡 552175, 228496, 198479, 583317, 140554, 114419, 117046, ?, ?
Fraternal9274's user avatar
1 vote
0 answers
117 views

Continuing the hexadecimal sequence 9bf66a6a87, 9bfd91c857, 9c0501e2ae, 9c0991af27, 9c0d27e6ec, [closed]

Given the following sequence of hexadecimals, figure out how to generate the next few in the sequence: 9bf66a6a87 9bfd91c857 9c0501e2ae 9c0991af27 9c0d27e6ec My ...
ray's user avatar
  • 19
9 votes
1 answer
903 views

2,6,?,30,-270 number sequence

Got this number sequence puzzle from a friend.
Fraternal9274's user avatar
-1 votes
1 answer
119 views

Numerical Sequence Puzzle: 8388607, 536870911, 2147483647,?

Sequence puzzle made by me. 8388607, 536870911, 2147483647, ?
Fraternal9274's user avatar
8 votes
1 answer
177 views

Two numerical sequences

Two numerical sequences made by me. Make sure to provide reasoning. 90,81,65,29,9,? 46656, 823543, 16777216, ?
Fraternal9274's user avatar
5 votes
1 answer
225 views

Homemade number sequence puzzle

A homemade number sequence puzzle. The sequence is as follows: 001, 1001, 00001, ?, 001001
Fraternal9274's user avatar

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