# Questions tagged [calculation-puzzle]

A puzzle that involves numerical calculations, such as multiplication and addition. Use with the [mathematics] tag.

12 questions with no upvoted or accepted answers
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### What does this mathematical operator do?

The solution to this puzzle is one I came up with when working on this puzzle: What is the answer of this math puzzle? For two natural numbers a,b, can you figure ...
• 815
516 views

### I'm a number with a special product, so name me when you think you've got it

In the blocks that come before, their special product tells us more. To guess my scheme you'll need calculation, but only little tests of recreation. Each block contains atoms strong as Thor, ...
• 2,296
315 views

### Under unusual daylight, delicate leaves rustle lightly

5th September 1964, ??:??:?? (UTC), somewhere in Romania: Under unusual daylight, delicate leaves rustle lightly, revealing bright autumn skies - Bob's set is reversed. (B > b) How does that sum to ...
• 12.7k
272 views

### Find the next country and the parameters

I created this puzzle. Denmark = [1 or 4, 11880, 1, 15, 4.433687003, 4 or 5] India = [11803, 381024, -1, 23, 0.3706062241, 5] New Zealand = [8916100448256 or 302875106592253, 43680, -1, 40, 0....
• 1,583
829 views

### Number Sequence Series-Question 7

This is a series of questions that are created by me. Here is question 7: (23)，(55)，(155)，(1255)，？，？，(56139611) I will give a hint to you guys in one month if nobody can solve it.
• 329
245 views

### Numerical puzzle

A friend of mine sent me this puzzle, to solve it you need to use: 1) basic arithmetic operations. 2) Multiple numeral systems.
• 49
236 views

### Merged Paris 2024 Medals Table

What happened to this Olympic Games Paris 2024 Medals Table? Country Gold Silver Bronze Total People's Republic of China 9 3 2 14 United States of America 5 9 5 19 France 5 5 5 15 Netherlands 5 1 ...
• 6,504
292 views

### Find a missing number in this 28x21 grid

355|066|677|855|677|081|044|855|355|062|216|677|216|855|224|044|034|046|051|677|355|264|044|046|044|351|886|043 043|044|886|357|886|352|225|357|043|222|993|001|233|968|046|225|062|041|351|886|043|227|...
192 views

### Do puzzles like "write 120 using four 8" have a specific name?

Here on puzzling SE there is the category "calculation puzzle", but it's very broad. I'd like to know if somebody gave a specific name for such puzzles.
• 2,095
142 views

### Multiple Line Lengths around 8 triangles

The image below contains 8 triangles each having side length 6. Inside each triangles are three numbers indicating lengths of 3 lines that are wrapped around the triangle without gaps. Numbers range ...
• 621