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A mathematical puzzle whose solution is heavily based on the arithmetic properties of the integers. Use with [mathematics]
-9
votes
6
answers
4k
views
What are the numbers?
Three perfect mathematicians with extremely strong memories are taking an exam.
The examiner tells each of them a certain piece of information about $x$ and $y$, which two positive integers between a …
-7
votes
1
answer
814
views
Deduce the numbers! (Fourth edition)
The two perfect logicians $A$ and $C$ meet their colleague $B$ at an exam, and they are not aware of the fact that $B$ is a moron and a horrible mathematician.
At the exam, the examiner informs them t …
-4
votes
Accepted
What are the numbers?
First off lets note a_b a couple of two numbers (a*b,b)
Starting from last statement , any set with absent couple such as (2,x) where x > 33 will be excluded
Such couples are:
ratio=35 2-35
rat …
-1
votes
Accepted
Deduce the numbers! (Fourth edition)
Solution:
Magic numbers are :
first off lets note that such a coupe i,j is a representation of two numbers ij and i
Now , the first sentence in the intersection of two lists , the list of additio …
2
votes
Find two numbers based on either their multiplication or exponent
Proof of uniqueness: this analysis is from the first, non-modified version of the puzzle.
Let's denote $S=\{2,3,4,6,12,36,216,1296,46656\}$ as the set of valid solutions.
If someone would have been in …
4
votes
4
answers
582
views
Find two numbers based on either their multiplication or exponent
There are two mathematicians with incredibly strong memories sitting in a coffee shop passing the time. Their server proposes a game:
First, he gives them a large number:
$2176782336$
Then he whispe …
-2
votes
1
answer
744
views
Deduce the numbers (addition + subtraction)
Two mathematicians are passing an exam, where the examiner informs them that he has chosen two different numbers between 2 and 100, such that one is divisible by the other.
The examiner then tells the …
10
votes
1
answer
1k
views
Deducing Two Numbers based on their Difference and Ratio
Yesterday I met the perfect logicians Divvy and Subtra.
I told them:
I have chosen two positive integers $x$ and $y$ with $2\le x\lt y\le 100$ and with $x$ a divisor of $y$.
I will now whisper …
0
votes
Sudoku-net pseudo-solvable with minimum blocks
my answer for the second question may be :
# # # | # # # | # # #
# # # | # # # | # # #
____ | ____ | ____
____ | ____ | ____
____ | ____ | ____
____ | ____ | …
1
vote
2
answers
291
views
Sudoku-net pseudo-solvable with minimum blocks
A sudoku net is defined here.
A sudoku net is defined as 'pseudo-solvable' if we can deduce at least two valid 'not unique' solutions.
friendly sudoku is defined here
What is the sudoku net with …