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2022

How long is the train ?original ↗
24 Jun 2022
Two trainsoriginal ↗
24 Jun 2022
Unjumble alternate coins into two sides by moving pair at a time.original ↗
24 Jun 2022
Why can always find a rectangle of 1 color if 2 colors are chosen to paint a grid?original ↗
24 Jun 2022
Burn Math Class by Jason Wilkesoriginal ↗
24 Jun 2022
Ingenuity in Mathematics by Ross Honsbergeroriginal ↗
24 Jun 2022
Mathematical Morsels by Ross Honsbergeroriginal ↗
23 Jun 2022
Mathematical Gems || by Ross Honsbergeroriginal ↗
23 Jun 2022
Mathematical Gems I by Ross Honsbergeroriginal ↗
23 Jun 2022
10 Chairs in a dance roomoriginal ↗
23 Jun 2022
I force 9 on youoriginal ↗
23 Jun 2022
Art of problem solving by Posamentieroriginal ↗
22 Jun 2022
The Magic Of Maths by Arthur Benjaminoriginal ↗
22 Jun 2022
Counting triangles in a k5 graphoriginal ↗
22 Jun 2022
5 Apples in a basketoriginal ↗
22 Jun 2022
Correct the error (problem 14)original ↗
22 Jun 2022
Prime Suspects by Granvilleoriginal ↗
22 Jun 2022
Moscow Puzzles by Boris Kordemskyoriginal ↗
22 Jun 2022
Moving coin out of a glass without touching itoriginal ↗
22 Jun 2022
Bulb becomes hot when it remains on for some time.original ↗
22 Jun 2022
How to draw 8 equilateral triangles using only 6 lines ?original ↗
22 Jun 2022
A top 10 listoriginal ↗
22 Jun 2022
Regents Exam 2020, Q 35, Algebra IIoriginal ↗
22 Jun 2022
Regents Exam 2020, Q 30 Algebra IIoriginal ↗
22 Jun 2022
8 matches 8 equilateral trianglesoriginal ↗
21 Jun 2022
Going from 5 to 4 in two movesoriginal ↗
21 Jun 2022
Who is who ?original ↗
21 Jun 2022
The riddle of Scheherazade by Raymond Smullyanoriginal ↗
19 Jun 2022
Making up your own mind by Edward Burgeroriginal ↗
19 Jun 2022
One hundred prisoners and a light bulb by Ditmarsch & Kooioriginal ↗
19 Jun 2022
1089 and all that by David Achesonoriginal ↗
19 Jun 2022
Strange Curves counting rabits & other mathematical explorations by Keith Balloriginal ↗
19 Jun 2022
Fibonacci and arctan functionoriginal ↗
19 Jun 2022
Stern Brocot Treeoriginal ↗
19 Jun 2022
Spiral of Theodorusoriginal ↗
18 Jun 2022
Why arctan(1)+arctan(2)+arctan(3)=180 ?original ↗
18 Jun 2022
Exploring arctan identities triangleoriginal ↗
18 Jun 2022
Gregory or Leibniz Seriesoriginal ↗
18 Jun 2022
Mathematics Galore by James Tantonoriginal ↗
18 Jun 2022
How to decide orientation of Hyperbola and Ellipseoriginal ↗
11 Jun 2022
Euler’s Gem by David Richesonoriginal ↗
11 Jun 2022
Graph Theory by Richard Trudeauoriginal ↗
11 Jun 2022
A Certain ambiguity by Suri and Baloriginal ↗
11 Jun 2022
The man who loved only numbers by Paul Hoffmanoriginal ↗
11 Jun 2022
Symmetry by Marcus du Sautoyoriginal ↗
11 Jun 2022
Joy of X by Steven Strogatzoriginal ↗
10 Jun 2022
Infinite Powers by Steven Strogatzoriginal ↗
10 Jun 2022
Euler the master of us alloriginal ↗
10 Jun 2022
Prime Obsession by John Derbyshireoriginal ↗
10 Jun 2022
A Mathematician’s Lament by Paul Lockhartoriginal ↗
10 Jun 2022
Measurement by Paul Lockhartoriginal ↗
10 Jun 2022
Understanding D’Alembert’s wave equationoriginal ↗
10 Jun 2022
SAT Practice Questionsoriginal ↗
9 Jun 2022
Average round trip time when wind is blowingoriginal ↗
7 Jun 2022
Why eigen vectors of symmetric matrices are orthogonal ?original ↗
3 Jun 2022
Dirac delta and unit step functionoriginal ↗
3 Jun 2022
Matrix Diagonalizationoriginal ↗
3 Jun 2022
Rank Factorizationoriginal ↗
2 Jun 2022
LU Decomposition (Strang’s method)original ↗
1 Jun 2022
LU Decomposition (Lay’s method)original ↗
1 Jun 2022
IB Sigma Notation (3 different methods)original ↗
31 May 2022
Why Coefficients of orthonormal vectors in Gram Schmidt are of the form AA’/A’A ?original ↗
30 May 2022
Dirichlet’s discontinuous Integraloriginal ↗
30 May 2022
Why determinant of inverse matrix is reciprocal of the original matrix ?original ↗
30 May 2022
How to check if the vertices of a quadrilateral form a parallelogram ?original ↗
30 May 2022
How sin(x)/x integration leads to integration of e^(i omega x)/x ?original ↗
29 May 2022
Higher power of matricesoriginal ↗
28 May 2022
Cauchy Schwarz Inequality (Integrals)original ↗
27 May 2022
How to use Euler’s formula to find the integral of (sin x)^2n over 0 to pioriginal ↗
27 May 2022
SAT Mock Paper 1 25 Minutesoriginal ↗
26 May 2022
When matrix behaves as a complex numberoriginal ↗
26 May 2022
Tip 50 Trigonometric functions and cofunctionsoriginal ↗
25 May 2022
Why Harmonic Series Diverge ?original ↗
24 May 2022
Dr. Euler’s Fabulous Formulaoriginal ↗
24 May 2022
Factorial and Gamma functionoriginal ↗
23 May 2022
IB Finite Geometric Series Sumoriginal ↗
22 May 2022
Mathematics PCE Junio 2019original ↗
21 May 2022
How to solve using LU Decompositionoriginal ↗
21 May 2022
Matrix poweroriginal ↗
20 May 2022
Reverse Triangle Inequalityoriginal ↗
19 May 2022
Equivalence of |a|original ↗
19 May 2022
Order Axiomoriginal ↗
18 May 2022
Triangle Inequalityoriginal ↗
18 May 2022
Main idea in Sieve of Eratosthenese algorithmoriginal ↗
18 May 2022
Reflection Matrix (about x axis)original ↗
17 May 2022
Continuously compoundedoriginal ↗
15 May 2022
How eigen values allows us to solve system of linear differential equationsoriginal ↗
14 May 2022
Understanding homogeneous differential equation with complex rootsoriginal ↗
14 May 2022
ICAI Comillas Math Power of Determinantoriginal ↗
14 May 2022
ICAI Comillas Math Problem on Limitsoriginal ↗
13 May 2022
ICAI Comillas Math Problem on max area of a circumscribed rectangleoriginal ↗
13 May 2022
Shear Matrixoriginal ↗
13 May 2022
Bisected chord through a circle of diameter equal to radiusoriginal ↗
12 May 2022
Segments joining vertices of equilateral triangle drawn on side of a rectangle forms a rhombusoriginal ↗
12 May 2022
IB HL Paper 3 Practice 2original ↗
11 May 2022
Euclid’s put-put problemoriginal ↗
11 May 2022
IB HL Paper 3 Practice 1original ↗
10 May 2022
IB Normal distribution, mean and standard deviation calculationsoriginal ↗
9 May 2022
Sum of the digits of numbers between 1 to 99original ↗
8 May 2022
SAT Math problem on division of Trapezium in to 3 triangles of same heightoriginal ↗
7 May 2022
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