Linked Questions
12 questions linked to/from Determine the algorithm
5
votes
3
answers
1k
views
Math problem: 1+1=0 [duplicate]
See if you can solve this math-problem:
$$
\begin{bmatrix}
1&+&1&=&0\\
2&+&8&=&2\\
2&+&2&=&0\\
9&+&8&=&3\\
3&+&4&=&0\\
6&...
- 1,147
4
votes
2
answers
725
views
Which number does 1995 correspond to in this number pattern? [duplicate]
I saw this puzzle many moons ago and so I assumed it would already be on here somewhere. I have looked and not found, though, and so I present to you a puzzle that baffled me when first I saw it.
What ...
- 17.4k
7
votes
2
answers
867
views
Four-digit quadruples [duplicate]
A friend gave me this riddle, stating that it would be easy for children but hard for grown-ups.
Any combination of four digits has an determined value. Here are some examples (note, the position of ...
- 173
1
vote
1
answer
552
views
Find the missing number (number sequence puzzle) [duplicate]
Find the missing number
56784 = 4
11111 = 0
72348 = 3
88652 = 5
88811 = 6
75213 = 0
65465 = 3
62257 = ?
I found this quiz in an archive of our company's ...
- 113
1
vote
1
answer
942
views
What is the next number in this puzzle [duplicate]
What is the relationship of this sequence and what is the answer for the last?
0001112359 = 4
1887145865 = 7
5528695874 = 6
0000085021 = 8
3247514251 = 0
5847962150 = ?
- 121
1
vote
1
answer
533
views
Math riddle question please [duplicate]
My husband and I cannot figure out this mathematical riddle, to save our lives, despite him being a math teacher.
The riddle is as follows:
8898=7,
4566=2,
1203=1,
4566=2,
5464=1,
7774=0,
9856=...
2
votes
1
answer
511
views
Crazy number puzzle.. Any Mathematicians? [duplicate]
Below is a sequence of four-digit numbers and characters that are associated with them.
Can you crack the code and find out what 2963 = ?
...
- 139
-1
votes
1
answer
176
views
It seems kids can resolve this puzzle faster than developers [duplicate]
It seems kids can resolve this puzzle faster than developers
So, can you solve this puzzle ?
| 8809 = 6 | 5555 = 0 | 7111 = 0 |
| 8193 = 3 | 2172 = 0 | 8096 = 5 |
| 6666 = 4 | 1012 = 1 | 1111 = 0 |...
- 109
1
vote
1
answer
154
views
Some crazy equations [duplicate]
8 = 2
68 = 3
91 = 1
32 = 0
883 = 4
761 = ?
What number should be instead of ? in this: ...
- 485
2
votes
1
answer
209
views
Depressed Numbers [duplicate]
$12 = 0$
$1234 = 1$
$123456 = 2$
$12345678 = 4$
$369 = 2$
$248 = 3$
$2 = 0$
$3 = 0$
$5 = 0$
$7 = 0$
$11 = 0$
$13 = 0$
What does:
$123456789 = ?$
Why?
Hopefully isn't too hard, please ask if you ...
- 1,519
0
votes
1
answer
163
views
Number trouble in here [duplicate]
I have been given 24 hours to solve this.
So, my friend has given me 10 examples.
$$1024 = 1$$
$$1000 = 3$$
$$2880 = 5$$
$$6591 = 2$$
$$2113 = 0$$
$$1345 = 0$$
$$1987 = 3$$
$$8888 = 8$$
$$5632 = 1$$
$...
- 15.1k
1
vote
1
answer
100
views
Number pattern challenge [duplicate]
Given the following:
17161 = 1
22135 = 0
50213 = 1
88888 = 10
49321 = 1
22222 = 0
00000 = 5
71132 = 0
96784 = 4
29381 = 3
79797 = 2
89104 = 4
91325 = 0
35720 = 1
67812 = ...
- 111