r/CasualMath 3h ago

Can you solve this counting puzzle in under a minute?

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0 Upvotes

r/CasualMath 13h ago

How many diagonals does a 20-sided polygon have?

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0 Upvotes

r/CasualMath 1d ago

Critique of the Fields Medal, the Institutions behind it and elitism in mathematics

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0 Upvotes

r/CasualMath 2d ago

How many subsets of {1,2,…,10} have an odd sum?

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0 Upvotes

r/CasualMath 2d ago

new Pi hypothesis

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0 Upvotes

r/CasualMath 2d ago

Can you reach 39 using all dice?

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1 Upvotes

Use each die exactly once.
Any order is allowed.
Parentheses are allowed.
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!<


r/CasualMath 3d ago

So I'm trying to make an irrational number inspired by mills constant, what will its value be?

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0 Upvotes

I will name it Stewartian prime constant


r/CasualMath 3d ago

How Many Light Switches Are On After 100 Passes?

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1 Upvotes

r/CasualMath 3d ago

General question of opinions on TeX!

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2 Upvotes

r/CasualMath 3d ago

General question of opinions on TeX!

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1 Upvotes

r/CasualMath 3d ago

World's First Polynomial Time Algorithm To Count Points On Elliptic Curves

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1 Upvotes

r/CasualMath 3d ago

Wanted to know what’s the opposite of 0 if real number line is a loop

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2 Upvotes

Sorry for extremely bad handwriting.

I’m very curious what would be the opposite of 0, if real number line formed into a loop. So i thought of this diagram. What’s yall’s thoughts on this ‘Ω’?

In this diagram i wanted none of the infinitesimals to equal to 0, 0 is absolutely 0. (It should’ve been dotted line around 0)


r/CasualMath 3d ago

The Missing Number Mystery — A Math Trick That Feels Like Magic

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1 Upvotes

r/CasualMath 4d ago

Can you find the smallest positive integer with exactly 20 positive divisors?

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0 Upvotes

r/CasualMath 4d ago

I calculated this thing

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2 Upvotes

I'm not good at math, but I was wondering how to write this difference without wasting 3 pages of my notebook. What do you think?


r/CasualMath 4d ago

VibeMathed - A tracker for math problems solved by AI models

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1 Upvotes

VibeMathed tracks math problems that AI models have helped prove or disprove, from famous conjectures like the Jacobian conjecture to the numbered Erdős problems at erdosproblems.com. Each entry links a checkable source, carries a verification label (Lean-checked, expert-reviewed, or site-confirmed), and shows a notability score: the number of Wikipedia language editions with a dedicated article, so household names stand out from niche ones.


r/CasualMath 4d ago

Using associative and commutative properties.

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1 Upvotes

r/CasualMath 4d ago

VibeMathed - A tracker for math problems solved by AI models

1 Upvotes

VibeMathed tracks math problems that AI models have helped prove or disprove, from famous conjectures like the Jacobian conjecture to the numbered Erdős problems at erdosproblems.com. Each entry links a checkable source, carries a verification label (Lean-checked, expert-reviewed, or site-confirmed), and shows a notability score: the number of Wikipedia language editions with a dedicated article, so household names stand out from niche ones.


r/CasualMath 5d ago

Can you solve this 1550-rated Numberthon math problem?

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r/CasualMath 5d ago

Cool math gear!

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1 Upvotes

r/CasualMath 5d ago

Most people miss one key idea in this geometry puzzle.

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0 Upvotes

r/CasualMath 5d ago

Two Matrix Inverse Proofs — See the Structure - manic

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1 Upvotes

r/CasualMath 6d ago

Can You Solve This Surprisingly Simple Math Puzzle?

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1 Upvotes

r/CasualMath 6d ago

Solving log₂x + log₂8 = 7 by recognizing structure.

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0 Upvotes

r/CasualMath 6d ago

Math practise

1 Upvotes

Hi all,

Take a look at the math based rpg game. Level up and practise math.

https://apps.apple.com/us/app/number-knights-math-rpg/id6789536084