Questions tagged [calculation-puzzle]
A puzzle that involves numerical calculations, such as multiplication and addition. Use with the [mathematics] tag.
1,133
questions
-10
votes
2
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Can you make 39 using the numbers 5 4 3 2 1 in that order?
Is it mathematically possible to show by some creative way that when you combine the digits 5, 4, 3, 2, 1 in that order using operators (+, -, x, integer division/ floating point division(//) or ...
- 1
10
votes
2
answers
569
views
Fill the triangular grid using the digits 1-9 subject to the constraints provided
Fill the grid using the digits 1-9 four times each. No row or column can contain the same digit more than once. The total of each row and column is provided, as well as clues to the numbers forming ...
- 13.5k
30
votes
1
answer
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Are you radical enough to solve this SURDOKU?
All "surds" represent whole numbers smaller than 15, and the same number is never used twice with the same index. (It's a sudoku.)
Attribution: PUZZLEBOMB.co.uk. Puzzles by @stecks & @...
- 13.5k
-5
votes
0
answers
171
views
decode the hiring puzzle?
There is a puzzle on this site Socket_Supply_Co
a00fba3af1ffc09,
Rabbit hole's enigma calls,
Puzzle unfolds deep.
I tried to decode the first line which is ...
- 99
3
votes
1
answer
413
views
Radioactive rocks and an unusual track [closed]
Yesterday, Matt and Rachel jogged for a half hour around a circular track with a
radius of 100 meters. In that time, Matt ran 10 laps and Rachel ran 7 laps. Each
started and stopped in the same ...
- 301
14
votes
3
answers
800
views
Fill the grid subject to product, sum and knight move constraints
Using the numbers 2, 3, 4, ... 19 each exactly once, fill some of the empty squares in the grid with a number so that the product of the numbers in each row is as shown, as is the sum of the numbers ...
- 13.5k
9
votes
1
answer
611
views
Why did the general choose this as the exact time of attack?
It is the WWII.
The general ordered his troops to start a surprise attack on the enemy at this exact time:
18:49:06
After the attack which was succssesful some ...
- 445
3
votes
3
answers
212
views
Making a multiplying magic square
To allow new users to solve this puzzle and earn reputation points, I encourage all users whose reputation is 200 or more to not post an answer until 48 hours after this question is posted. Thank you!
...
- 13.5k
1
vote
2
answers
220
views
Solve the Alphametic: SOUNDS / WOW = ELK
This is a long-division problem in which letters are substituted for numbers. Solve the problem. Determine the number value of each letter; and when the letters in each one have been arranged in order ...
- 21
8
votes
1
answer
1k
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Making 1353 using Four fours
As the title says, the goal for this puzzle is making 1353 out of simply 4, 4, 4 and 4. Concatenation is not allowed. Here are all of the allowed operators.
Addition (+), Subtraction and negatives (-)...
- 383
-4
votes
3
answers
163
views
Use 1 6 7 8 (all numbers) to equal 2 [closed]
Create an equation using 1, 6, 7 and 8 to equal 2.
Can use brackets, plus, minus, subtract, multiply.
- 11
4
votes
1
answer
155
views
The 50 game between two players, selecting numbers between 1 and 10 inclusive + variations
This is a cross-post from MSE: https://math.stackexchange.com/questions/4900281/the-50-game-between-two-players-selecting-numbers-between-1-and-10-inclusive
Let's play a game with two players, with ...
- 143
6
votes
1
answer
228
views
Connect the dots x Crosswords
About the puzzle:
This puzzle is a crossover of "connect the dots" puzzles and crossword puzzles. It requires the solver to place dots on the graph using crossword-like clues. Then, dots ...
- 1,153
7
votes
1
answer
276
views
Ernie and the Kzijekistanian Coup
A couple of days ago I noticed an article in the International News section of our local newspaper headlined Kzijekistanian Empress Abdicates. Reading on, I discovered that she "… stepped down ...
- 14k
28
votes
1
answer
2k
views
Where is the large cook promotion?
The time is 8:59 or ...
Where is the large cook promotion?
3,4,2
Partial answers are welcome. A complete answer will use/explain all of the above.
- 13.5k