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2022

Tangent and derivative AP Calculusoriginal ↗
26 Jul 2022
Why there always exists a mid point with integer coordinates among 9 random points with integer coordinates ?original ↗
25 Jul 2022
SAT Practice 25 minutes (without calculator)original ↗
25 Jul 2022
How many fish are in the pond?original ↗
24 Jul 2022
10 Disjoint triangles in a staroriginal ↗
24 Jul 2022
One hundred problems in elementary mathematics by Steinhausoriginal ↗
24 Jul 2022
How to draw an inscribed square in any triangle ?original ↗
23 Jul 2022
Distributing + and negative sign to make overall sum zerooriginal ↗
23 Jul 2022
GCD of binomial coefficientsoriginal ↗
22 Jul 2022
IB HL Homogeneous differential equation and horizontal tangentsoriginal ↗
21 Jul 2022
A simple AP Calculus question that stumps many when they don’t understand the definition of derivativeoriginal ↗
21 Jul 2022
Another way to prove why it is not possible to use each digit from 0 to 9 to come up with a sum of 100.original ↗
21 Jul 2022
IB HL Tangent equation and geometric sequenceoriginal ↗
21 Jul 2022
Why its not possible to use each digit from 0 to 9 only once to come up with an exact sum of 100 ?original ↗
20 Jul 2022
Two standard SAT Problems and how to solve themoriginal ↗
20 Jul 2022
IB HL Differential Equation and Mac Laurin Seriesoriginal ↗
20 Jul 2022
IB HL Mean Value Theoremoriginal ↗
20 Jul 2022
Contrapositive puzzleoriginal ↗
19 Jul 2022
How to solve it by Polyaoriginal ↗
19 Jul 2022
Square inscribed in an isosceles triangleoriginal ↗
18 Jul 2022
Unmatched dishes on lazy susanoriginal ↗
18 Jul 2022
Minimum number of throws require to throw at least one sixoriginal ↗
18 Jul 2022
How to divide a brownie with a missing rectangular piece into two equal parts with one cut ?original ↗
17 Jul 2022
Mathematics for human flourishing by Francis Suoriginal ↗
17 Jul 2022
Largest productoriginal ↗
17 Jul 2022
Finding counterfeit coinoriginal ↗
17 Jul 2022
Proofs and refutation by Imre Lakatosoriginal ↗
16 Jul 2022
Linear algebra by Harold Edwardsoriginal ↗
15 Jul 2022
The pill problemoriginal ↗
14 Jul 2022
Cat and mouse gameoriginal ↗
14 Jul 2022
Frog jumping problemoriginal ↗
14 Jul 2022
How to cut an 8 by 10 sheet of paper so an elephant could pass through it ?original ↗
14 Jul 2022
Combinatorics Assignment 0original ↗
13 Jul 2022
SAT Mock Paper 2 (55 Minutes)original ↗
12 Jul 2022
Logic: A complete introduction by Dr Siu Fan Leeoriginal ↗
12 Jul 2022
Practical Discrete Mathematics by White and Rayoriginal ↗
11 Jul 2022
Garfield’s proof of Pythagorean Theoremoriginal ↗
11 Jul 2022
Sat Mock Paper 1 (25 minutes)original ↗
11 Jul 2022
Transition Mathoriginal ↗
11 Jul 2022
Logic for Dummies by Mark Zagarellioriginal ↗
10 Jul 2022
How symmetry provides solution to this quartic equationoriginal ↗
10 Jul 2022
Problem Solvingoriginal ↗
9 Jul 2022
Wrong box labelingoriginal ↗
9 Jul 2022
It’s just how you organize your dataoriginal ↗
9 Jul 2022
Worst case scenariooriginal ↗
9 Jul 2022
Overlapping parallelogramsoriginal ↗
8 Jul 2022
Flight of Bumblebeeoriginal ↗
8 Jul 2022
Orange and green dotsoriginal ↗
8 Jul 2022
Few favorite quotes about logicoriginal ↗
8 Jul 2022
Math wonders by Posamentieroriginal ↗
8 Jul 2022
Why n^3 < 3^n ?original ↗
7 Jul 2022
The Mathematical Universe by William Dunhamoriginal ↗
7 Jul 2022
Constant Chordoriginal ↗
6 Jul 2022
Red and blue dotsoriginal ↗
6 Jul 2022
Choosing 5 non attacking rooks out of 41 rooks on a 10 by 10 chess boardoriginal ↗
6 Jul 2022
Why n divides some or sum of some k out of n random numbersoriginal ↗
5 Jul 2022
Colorado Olympiad problemoriginal ↗
5 Jul 2022
Mathematics as Problem Solving by Alexander Soiferoriginal ↗
5 Jul 2022
When life is linear by Tim Chartieroriginal ↗
5 Jul 2022
Why every n-gon has at least n-3 diagonals inside it ?original ↗
4 Jul 2022
How prince chooses elder daughter (Coercive logic)original ↗
4 Jul 2022
Journey through genius by William Dunhamoriginal ↗
4 Jul 2022
The locker problemoriginal ↗
4 Jul 2022
Lock Problemoriginal ↗
4 Jul 2022
Rumor on the island (logical puzzle)original ↗
3 Jul 2022
Dominant hand coercion puzzleoriginal ↗
3 Jul 2022
Minimizing sum of the distance from a pointoriginal ↗
3 Jul 2022
Beyond the quadratic equation by Ron Irvingoriginal ↗
3 Jul 2022
Why abcabc is divisible by 7, 11 and 13 ?original ↗
3 Jul 2022
Classics Problems of Probability by Prakash Gorroochurnoriginal ↗
3 Jul 2022
What is cos(i) ?original ↗
3 Jul 2022
Last 3 digits of 7^9999original ↗
2 Jul 2022
Lying on Mondayoriginal ↗
2 Jul 2022
Wine and bottleoriginal ↗
1 Jul 2022
How much profit ?original ↗
1 Jul 2022
A sequence of squaresoriginal ↗
1 Jul 2022
Permutation of fractionsoriginal ↗
30 Jun 2022
Always a perfect squareoriginal ↗
30 Jun 2022
Square within a square (method 2)original ↗
30 Jun 2022
Square Within a square (method 1)original ↗
30 Jun 2022
Where to held the chess tournament ?original ↗
30 Jun 2022
What ? In complex numbers Fermat’s last theorem doesn’t always hold !!!original ↗
30 Jun 2022
Professor Stewart’s cabinet of mathematical curiosities by Ian Stewartoriginal ↗
29 Jun 2022
The art and craft of problem solving by Paul Zeitzoriginal ↗
29 Jun 2022
Geometry problem on overlapping percentage between circle and squareoriginal ↗
29 Jun 2022
Pointillism problemoriginal ↗
28 Jun 2022
Nets, Puzzle and postmen by Peter Higginsoriginal ↗
28 Jun 2022
Prove log 2 is irrationaloriginal ↗
28 Jun 2022
Impossibility of weighing two coins so that probability of all three outcomes is sameoriginal ↗
28 Jun 2022
5 divides 1^n+2^n+3^n+4^n except when 4|noriginal ↗
27 Jun 2022
Arbitrary sequence of non primesoriginal ↗
26 Jun 2022
Mathematical Journeys by Peter D. Schumeroriginal ↗
26 Jun 2022
Old man and his sonoriginal ↗
26 Jun 2022
All four ailmentsoriginal ↗
26 Jun 2022
The Ambulatory Commuteroriginal ↗
26 Jun 2022
Ingenious mathematical problems and methods by L.A.Grahamoriginal ↗
26 Jun 2022
Fascinating world of Graph Theory by Benjamin, Chartrand and Zhangoriginal ↗
26 Jun 2022
There are always Exactly 2 almost irregular graphs of any order noriginal ↗
26 Jun 2022
There is no irregular graphoriginal ↗
25 Jun 2022
Ferry boats problemoriginal ↗
24 Jun 2022
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