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Results tagged with formation-of-numbers
Search options questions only
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user 51928
For puzzles about forming numbers using other numbers and mathematical operations. Use with [mathematics]. Puzzles using this tag should carefully specify the allowed operations.
5
votes
1
answer
758
views
Formula One (?) Hard Puzzle
On a website I use to go, one of the writers gave this hard puzzle:
What are the meaning of those numbers given they are not Norwegian coordinates.
60.6604211,10.7210713
I have no clue how to solve …
- 6,518
6
votes
5
answers
265
views
May Make $\frac5{2020}$ 2020
For May 2020, try to create $\dfrac{5}{2020}$ using the least possible number of integers in the set $\{1,3,4,6,7,8,9\}$.
$2$, $5$ and $0$ are not allowed.
Example:
$$\dfrac{4+1}{3\left(673+\frac13 …
- 6,518
5
votes
1
answer
308
views
There are a lot of gifts missing
1-108-121-128-146-157-195-227-305-315-???
There are a lot of gifts missing
There is a missing 11th number which is it?
This is not on OEIS :)
- 6,518
6
votes
1
answer
893
views
Largest prime number with +, -, ÷
This is inspired by this great puzzle
What is the largest prime number that can be made using the integers from 1 to 10 under the following conditions:
Addition, subtraction, division are allowed.
M …
- 6,518
4
votes
1
answer
174
views
Constant puzzle
A constant is hiding behind this puzzle, can you tell which?
4 $\rightarrow$ 2 $\rightarrow$ 1 $\rightarrow$ 1 $\rightarrow$ 1 $\rightarrow$ $\dots$
? $\rightarrow$ ? $\rightarrow$ ? $\rightarrow$ …
- 6,518
7
votes
1
answer
295
views
This puzzle's value is 334
The 28th of october is valued by 40. This sentence is valued by 17. This paragraph is valued by 143.
This puzzle is valued by 334.
Can you give the value of Puzzling StackExchange?
- 6,518
6
votes
4
answers
872
views
Paris and Wife Matchstick
Here are two matches dates that I hold with love in my heart:
The current sum is 1970 + 1997 = 3967.
You must requisition at most 10 matches so that the sum is "as big as possible". We will call this …
- 6,518