MindYourDecisions Courses

The Mystery of 355/113 and Pi

Uncover the untold history of 355/113 as an approximation for π, exploring ancient Chinese mathematicians' contributions including Liu Hui and Zu Chongzhi, and learn how this mysteriously accurate fraction was derived.

• YouTube
• 26 minutes
• Self-Paced
• Free Video

Banned Google Interview Question - Mathematical Puzzle Challenge

Dive into a challenging mathematical puzzle that was once a banned Google interview question, exploring the solution through estimation, intuition, and formal proof.

• YouTube
• 12 minutes
• Self-Paced
• Free Video

Can You Pass Harvard's Remedial Math Class?

Discover if you can solve Harvard's introductory math exam questions that sparked political debate about academic standards.

• YouTube
• 31 minutes
• Self-Paced
• Free Video

For Which Values of n Can You Find an Integer Solution?

Explore a mathematical problem from the 2024 Putnam Competition examining which values of n allow integer solutions, with step-by-step analysis of this intriguing number theory question.

• YouTube
• 11 minutes
• Self-Paced
• Free Video

Solving a Viral Math Problem from Turkey's University Entrance Exam

Dive into a challenging viral mathematics problem from Turkey's university entrance exam, exploring geometric concepts through step-by-step solutions and detailed explanations.

• YouTube
• 13 minutes
• Self-Paced
• Free Video

False Proof That 2 + 2 = 5 - Finding the Mathematical Mistake

Uncover the mathematical fallacy behind a seemingly convincing proof that 2 + 2 = 5 and sharpen your critical thinking skills in spotting algebraic errors.

• YouTube
• 10 minutes
• Self-Paced
• Free Video

Famous Mathematical Mistakes by Genius Thinkers - From Feynman to Einstein

Explore fascinating examples of how even brilliant minds like Einstein, Feynman, and Leibniz occasionally stumbled on seemingly simple mathematical problems and puzzles.

• YouTube
• 12 minutes
• Self-Paced
• Free Video

Mathematical Sum Prediction Trick - How It Works

Uncover the mathematical secrets behind a fascinating prediction trick involving a 4x4 grid of numbers and learn why it consistently works.

• YouTube
• 10 minutes
• Self-Paced
• Free Video

The Bridge and Torch Interview Riddle - Microsoft Technical Interview Question

Master the famous bridge and torch riddle used in Microsoft interviews through step-by-step solutions and strategic approaches to this challenging logic puzzle.

• YouTube
• 14 minutes
• Self-Paced
• Free Video

The Original 1926 SAT Exam - A Historical Analysis of Test Questions and Difficulty

Explore the challenging questions from the original 1926 SAT exam, comparing its rigorous content to modern standards through detailed analysis of various sections including arithmetic, logic, and language.

• YouTube
• 27 minutes
• Self-Paced
• Free Video

Three Challenging Math Problems from China

Engage with three challenging mathematical puzzles from China, testing your problem-solving skills through step-by-step solutions and detailed explanations.

• YouTube
• 13 minutes
• Self-Paced
• Free Video

Apple's Mislabeled Boxes Interview Puzzle - A Logic Problem Solution

Master the logic behind Apple's tricky interview puzzle about mislabeled boxes and learn the optimal solution strategy using minimal sampling to correctly identify and fix the labels.

• YouTube
• 14 minutes
• Self-Paced
• Free Video

Finding the Smallest Number with 426 Proper Factors - Cambridge Entrance Exam Problem

Dive into a challenging mathematical problem from Cambridge's STEP exam, exploring number theory concepts to find the smallest number with exactly 426 proper factors.

• YouTube
• 11 minutes
• Self-Paced
• Free Video

6 Impossible Puzzles with Surprising Solutions

Challenge your problem-solving skills with six mind-bending puzzles that require creative thinking. Explore unique solutions and expand your analytical abilities through engaging brain teasers.

• YouTube
• 13 minutes
• Self-Paced
• Free Video

Can You Solve The Impossible Age and House Number Puzzle?

Challenging mathematical puzzle involving age and house number, testing logical reasoning and problem-solving skills. Explore a unique problem from the International Championship of Mathematical Games.

• YouTube
• 11 minutes
• Self-Paced
• Free Video