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89 votes
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My dead mom left behind some number code

It's likely your mother was testing her short-term memory. I found this slideshow which features the numbers (except the fifth and seventh which are slightly wrong), in order, on a slide entitled &...
hexomino's user avatar
  • 137k
57 votes
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What is the next number in the series: 21, 21, 23, 20, 5, 25, 31, 24,?

I would expect the answer to be Because
Adam's user avatar
  • 2,907
50 votes

4,4,2,6,2,10,4,_ sequence from 4th grade packet

Same answer as PDT, just explained differently:
Will.Octagon.Gibson's user avatar
42 votes
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Is this sequence that hard?

Probably way over thinking this: There is a hint that: Reason:
p.s.w.g's user avatar
  • 861
41 votes
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What does this group of numbers represent?

I don't know if it is the right solution, but if we consider: Then I got this explanation:
IAmInPLS's user avatar
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39 votes
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It's my birthday

You are...
Walt's user avatar
  • 6,469
37 votes
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What makes an Interesting Puzzle™?

Subpuzzles A Fringe Word™ A Not Fringe Word™ A Leaping Set™ A Not Leaping Set™ A Persistent Phrase™ A Not Persistent Phrase™ A Square Number™ A Not Square Number™ A Double Jump Word™ A Not ...
34 votes
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A powerful drink

Next year you're going to have: The references are to:
SQLnoob's user avatar
  • 8,580
34 votes
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A brief int counter

I think the next number is The sequence is
hexomino's user avatar
  • 137k
33 votes
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I was told this is not a math puzzle

I believe this is simply
Timoris's user avatar
  • 1,331
33 votes
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I bet you can't find the next number in this sequence

Answer Reason
phenomist's user avatar
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33 votes
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That gap is a bit jarring

rhsquared's user avatar
  • 9,220
32 votes
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A predictable sequence

I think the next number is The number sequence goes as
Tom's user avatar
  • 70.8k
31 votes
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Professor Halfbrain and the sum of the digits of all divisors

Professor Halfbrain's theorem is Proof
hexomino's user avatar
  • 137k
31 votes

Find d this ones stumped me help?

D is equal to: Explanation:
ThatOneNerdyBoy's user avatar
31 votes
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A number sequence in disguise

The number that should replace the question mark is: Because: About four lines down...
codewarrior0's user avatar
  • 6,832
30 votes
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An unusual and very hard number sequence problem

Okay, I found something. We must consider : We have : Then : Thus : Finally : And the answer is :
IAmInPLS's user avatar
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29 votes
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What is the next number in the series?

These are...
Deusovi's user avatar
  • 147k
29 votes
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Radical IQ challenge

First, take And now This gives: So the next number is:
Beastly Gerbil's user avatar
28 votes
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What kind of puzzle is solved by these sequences of numbers?

It's a... The board is originally in the state The sequence of numbers
Deusovi's user avatar
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27 votes
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What is the 30th number in the sequence?

I would say that the 30th number in the sequence is: Explanation:
SQLnoob's user avatar
  • 8,580
27 votes
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Missing number in a sequence: 61, 52, 63, 94, ??, 18, 001, 121

Try looking at this another way round. Specifically: The answer is beneath this spoiler - but try to solve it yourself first before you look. You see, all of these are: The giveaway is:
Stiv's user avatar
  • 146k
27 votes
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A Sequence That Keeps Changing?

So... Can you guess what is my sequence right now?
Tom's user avatar
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26 votes
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Can you find O in this math riddle?

The answer is Explanation follows R = 1,111 T = 2,222 E = 3,333 N = 4,444 O =
AeJey's user avatar
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26 votes
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Explain the number sequence and predict the next 6 numbers

The rule of the sequence is: Example & Answer:
user65284's user avatar
  • 1,506
26 votes
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Describe your ability to solve this number sequence!

A basic solution is as the sequence
Tom's user avatar
  • 70.8k
25 votes
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What number follows up next? Part 2

OEIS doesn't list this sequence. After analyzing the pattern, I come to the conclusion that (one) answer is Explanation: EDIT (05/06/18): I submitted this sequence to OEIS and it has (finally) been ...
NAMELESS's user avatar
  • 1,370
25 votes
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A strange number pattern, isn't it?

The next five terms in the sequence are: Because this sequence represents:
Stiv's user avatar
  • 146k

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