If you can only go right or down in a grid, how many paths can you make from start to finish? There's a wonderful connection to an ancient mathematical pattern. 0:00 problem 1:19 computer 2:12 long 7:31 shortcut Skills tested: outside the box thinking, creativity, logic, pattern recognition, Harvard entrance exam style question, interview question, mathematics, puzzle solving, problem solving, genius test Business Insider Pingala Path counting brain teaser Khan Academy Get early access to videos by supporting the channel Patreon Subscribe: Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these links, I may be compensated for purchases made on Amazon. As an Amazon Associate I earn from qualifying purchases. This does not affect the price you pay. Book ratings are from January 2025. My Books (worldwide links) #worldwide My Books (US links) Mind Your Decisions: Five Book Compilation A collection of 5 books: "The Joy of Game Theory" rated 4.2/5 stars on 564 reviews "The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias" rated 4.2/5 stars on 55 reviews "40 Paradoxes in Logic, Probability, and Game Theory" rated 4.2/5 stars on 81 reviews "The Best Mental Math Tricks" rated 4.3/5 stars on 148 reviews "Multiply Numbers By Drawing Lines" rated 4.5/5 stars on 57 reviews Mind Your Puzzles: Collection Of Volumes 1 To 3 A collection of 3 books: "Math Puzzles Volume 1" rated 4.4/5 stars on 138 reviews "Math Puzzles Volume 2" rated 4.2/5 stars on 45 reviews "Math Puzzles Volume 3" rated 4.3/5 stars on 38 reviews 2017 Shorty Awards Nominee. Mind Your Decisions was nominated in the STEM category (Science, Technology, Engineering, and Math) along with eventual winner Bill Nye; finalists Adam Savage, Dr. Sandra Lee, Simone Giertz, Tim Peake, Unbox Therapy; and other nominees Elon Musk, Gizmoslip, Hope Jahren, Life Noggin, and Nerdwriter. My Blog Twitter Instagram Merch Patreon Press