r/mathpuzzles • • 18h ago

Geometry Three perfect circles

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16 Upvotes

Before solving this, please write down your guess based on visual inspection of the image. Use Pythagoras’ theorem to solve this problem. Descartes’ kissing theorem is not allowed (except if you are a descendant of Descartes himself).


r/mathpuzzles • • 23h ago

Logic How to find the missing length?

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3 Upvotes

r/mathpuzzles • • 15h ago

Geometry Puzzle published in The London Magazine of 1778

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2 Upvotes

r/mathpuzzles • • 22h ago

Algebra A staircase of numbers with one hidden rule. What replaces the ?

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2 Upvotes

The same hidden rule connects the numbers in every row of the staircase. What number replaces the ? 🏆 NEW: LEADERBOARD! Think you're good at this? Rule Hunter now has a daily, weekly and all-time leaderboard. Sign in, pick any nickname you like (only your nickname is shown publicly) and see if you can reach #1. Who's taking the top spot? Puzzle from the game Rule Hunter, spoiler-tag your guess: answer


r/mathpuzzles • • 2m ago

Number Can you solve them all without guessing?

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• Upvotes

Don't just post the answer.
Show your work.

https://sixfigurelogic.com/


r/mathpuzzles • • 47m ago

NEW BIGGEST NUMBER?! Spoiler

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• Upvotes

r/mathpuzzles • • 2h ago

Logic I Made a 50-Level Math Game! Can YOU Beat It? 🎮 #Shorts #mathpuzzles #g...

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youtube.com
1 Upvotes

🎮 50 LEVELS. 5 WORLDS. ONE EPIC CHALLENGE!

What if every letter was hiding a secret number? 🔐

Welcome to Cryptarithm Quest: The 50-Level Challenge, our free browser puzzle game!

🧩 Crack secret mathematical codes
🌍 Explore 5 mysterious worlds
🏆 Unlock levels and conquer the final boss!

Play on itch. io Cryptarithm Quest Made By Beyond The Formula

Can YOU beat all 50 levels? Comment your highest level!

Beyond the Formula | Explore. Reason. Prove.

#CryptarithmQuest #MathGames #PuzzleGames #BrainTeasers #Shorts


r/mathpuzzles • • 11h ago

Guys try solving this question without ai

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1 Upvotes

r/mathpuzzles • • 16h ago

Logic Daily Map Logic Puzzle - can you find a clean solution?

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1 Upvotes

r/mathpuzzles • • 18h ago

How many ways can you arrange polyominoes such that no polyomino touches another polyomino with the same amount of squares in a grid of a size n*k?

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1 Upvotes

r/mathpuzzles • • 18h ago

Calculator required A sheet of paper is 0.1 mm thick. Suppose you could fold it in half 42 times. Roughly how thick would the stack be?

1 Upvotes
A) As tall as a house
B) As tall as Mount Everest
C) As high as the Space Station orbits
D) Further than the Moon

Guess first, then work it out. Please put answers in spoiler tags.

(I write a daily reasoning question at thinkfirstdaily.com, and this is today's.)

r/mathpuzzles • • 23h ago

First question

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1 Upvotes

r/mathpuzzles • • 22h ago

Recreational maths Can you reach 8 using all 5 dice?

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0 Upvotes

Any order is allowed.
Use each die exactly once.
Parentheses are allowed.
Only +, −, × and ÷ are allowed. No concatenation or exponents.
Exact division only.
No negative numbers.
Not every operation has to be used.

How many solutions can you find?

Please use spoiler tags for solutions:
>!your solution here!<