It is currently 2 AM and I should be asleep, instead I made this. enjoy.4yr ⋅ FatWollump ⋅ r/mathriddles
Interesting geometry problem. Find the angle marked ?? This is an example of problems called Langley's Adventitious Angles (try to solve without Googling the answer)3yr ⋅ AdLocal4404 ⋅ r/mathriddles
Find the best spot to view this painting! Can you do it without touching pen and paper?4yr ⋅ lilfluf ⋅ r/mathriddles
The upper black line is a tangent of the 3rd circle. The white circles hava a diameter of 10. Calculate [AB]5yr ⋅ The_Only_Real_Jesus ⋅ r/mathriddles
So you’re supposed to be able to add parentheses to this to make the equation true and I’d like to look like a smart dad. Help.6yr ⋅ textbookskillz ⋅ r/mathriddles
This is my first time posting on this sub reddit. Any solutions /thought processes are welcome.6yr ⋅ RPNATOR ⋅ r/mathriddles
Two lines hanging out from apartments, solve distance between apartments (X)7yr ⋅ miyachi ⋅ r/mathriddles
Has anyone seen something like this? I feel there should he a few numbers filled in.9yr ⋅ ethanolin ⋅ r/mathriddles
Got this birthday card and the cover says “It adds up to another birthday!”. What’s going on here? Did they just copy a random problem or is there something more to it?6yr ⋅ Nashenal ⋅ r/mathriddles
Arc problem that I've had for a few years and haven't been able to solve.6yr ⋅ Rooky_Soap ⋅ r/mathriddles
This primary-school puzzle makes no sense to me. It’s an underdetermined system of equations, isn’t it? I don’t think it has a solution that is a single element of any of of these symbols.5yr ⋅ gmiwenht ⋅ r/mathriddles
Hexagonal Sudoku! Every line of 7 collinear cells, every two adjacent lines of length 5 and 2, and every bolded group of 7 must each contain the positive integers from 1 to 7.9yr ⋅ HarryPotter5777 ⋅ r/mathriddles
Algebra, with a lot of inqualities & sequences, find the largest real 'c'7yr ⋅ poopholesucker ⋅ r/mathriddles
Made a puzzle for my brothers to find the location of their christmas present, no solve no present5yr ⋅ Squashedgaming ⋅ r/mathriddles
Posting here b/c you guys like math riddles. Can you solve this with 4 numbers?6yr ⋅ Zenobiyl ⋅ r/mathriddles
The radius of the yellow circle inscribed in the square is 1. The blue circle is tangent to two sides of the square and the circle. Find the radius of the blue circle.8yr ⋅ M34ll ⋅ r/mathriddles
Finding an average waiting time at a restaurant using (generally) basic combinatorics8yr ⋅ oiuoiuoiuuio ⋅ r/mathriddles
The lines pictured (counting the initial horizontal one) have lengths 1, 2, 3, 4, ... What is the limiting distance between adjacent points on either axis?9yr ⋅ HarryPotter5777 ⋅ r/mathriddles
The radius of the large circle is 1. Find a general expression for the series R1, R2, R3, . . .9yr ⋅ HarryPotter5777 ⋅ r/mathriddles
If cryptarithms are fair game, then herald in the New Year! (Boxes may repeat digits, no number has a leading zero.)9yr ⋅ edderiofer ⋅ r/mathriddles
Rearrange the numbers in a way so that each row (diagonal, vertical, and horizontal) will add up to the same number.6yr ⋅ [deleted] ⋅ r/mathriddles
The width of the picture is 1. Find a general expression for the series L1, L2, L3...9yr ⋅ edderiofer ⋅ r/mathriddles
How many times on a 12-hour digital clock reflect vertically into a valid time, as in the linked picture? How many reflect into themselves, and how many into a different valid time?9yr ⋅ drsjsmith ⋅ r/mathriddles
Im not sure if this is to do with maths, but my Math coordinator sends out puzzles for everyone to solve each week, they are Usually pretty easy. No one has solved this one8yr ⋅ [deleted] ⋅ r/mathriddles
