Questions tagged [calculation-puzzle]
A puzzle that involves numerical calculations, such as multiplication and addition. Use with the [mathematics] tag.
1,270 questions
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A Stack Of Figures (of the same family)
There are a total of 225 edges and all of them are of equal length.
There are a total of 85 regular polygons, where 75 of them are identical and the remaining 10 have exactly one identical match.
...
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9
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A Logic Puzzle Where No Variable Can Be Determined Without All Six Clues
Six variables š“, šµ, š¶, š·, šø, š¹ are distinct integers from 1 to 10 (inclusive).
They satisfy the following conditions (I've added mathematical definitions on the right to avoid ambiguity):
šµ is ...
- 491
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5
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The Calabash Calculator
You are introduced to the Calabash Calculator, which supports the following operations:
The four basic arithmetic operations, + - Ć Ć·
The six comparison operators, ...
- 121
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Geometric Logic Puzzle: A Test of Cognitive Shift (The "Zocchi Test") [closed]
I have designed a visual logic puzzle that focuses on pattern recognition and cognitive flexibility. I would like to share it here for a two-fold purpose: to see how the community approaches the ...
8
votes
4
answers
691
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Six-Variable Logic Puzzle - How to solve with a forced logical path
Six variables š“, šµ, š¶, š·, šø, š¹ are distinct integers from 1 to 10 (inclusive).
They satisfy the following conditions:
š“ Ć šµ = 24
šµ is adjacent to š¹ ā |B-F| = 1
šø ā š· = 3
š¶ is the ...
- 491
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4
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For Pi Day, which expression is larger?
Without using the square root key or other root key on a calculator,
determine which side is larger.
$\pi \ \ \ \text{or} \ \ \ \sqrt{63} - \sqrt{23}$
You may use the squaring key $ \ X^2, \ $ ...
- 2,664
1
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2
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Find all repdigit x, y, and z such that (xx...x)Ā² + (yy...y) = (zz...z) in base b
Find all repdigit x, y, and z such that (xx...x)Ā² n times + (yy...y) n times = (zz...z) in base b.
Is this occurance possible in all base b? If not, explain why and what are the conditions for this ...
- 2,447
5
votes
3
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Find all (a,b) such that sum of factorials of each digit of a is equal to b and sum of factorials of each digit of b is a
Find all (a,b) such that sum of factorials of each digit of a is equal to b and sum of factorials of each digit of b is a.
How can you find all such numbers? Are there finite or infinite of such ...
- 2,447
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votes
1
answer
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Find all integers a and b such that multiplying a by b literally is equal to aĀ²
Find all integers a and b such that multiplying a by b literally is equal to aĀ².
When I saying multiplying a and b literally, it is as if were you are concatenating the product of each digits of a by ...
- 2,447
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Ernie and the Timing of the Traffic Lights
Ernie picked me up from home, very early on Saturday morning, so I could help him out at the observatory. On the drive, he related some of the history of Junction - the small hamlet that nestles at ...
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Make the numbers 45, 44, 43, 42, 41, and 40 out of the numbers 2 0/0! 2 6
0 can be either used as a 0 or a 1 with the symbol 0!. You can use concatenation, brackets, subtraction, multiplication, division, and addition. I got this sheet at school from my teacher.
using the ...
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1
answer
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Make the number 49 with the digits 2, 0, 2, 6
0 can be either used as a 0 or a 1 with the symbol 0! I got this sheet at school from my teacher. You can use brackets, subtraction, multiplication, division, and addition
using the digits in 2026 as ...
- 17
11
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4
answers
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A six-variable math-logic puzzle with a unique solution
My original puzzle: Six variables š“,šµ,š¶,š·,šø,š¹ are distinct integers from 1 to 10 (inclusive).
They satisfy the following conditions:
B - D = 2
F + A = 11
A is between D and C
No two ...
- 491
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6
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Add parentheses to make the biggest possible value
Maximize the expression below by inserting parentheses.
No other changes are allowed.
2 Ć· 2 - 3 Ć· 3 - 4 Ć· 4 - 5 Ć· 5
Attribution:
Quantum Magazine, March/April 1999
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Can you get to 8?
You and I are playing the funky calculator game. In this game, I pick a positive integer N which I then tell you. Then you attempt to display the number N on the funky calculator which is initially ...
- 35.1k