How many can you solve? Skills tested: outside the box thinking, creativity, lateral thinking, logic, Harvard entrance exam style question, interview question, mathematics, estimation, puzzle solving, problem solving, genius test 0:00 bat 1:34 SAT 3:02 cow 5:52 hen 8:07 balls 10:15 forty bat SAT cow how many balls forty Thanks Jordan Goff! This appeared in the textbook Prealgebra by Tom Carson. It is also a classic puzzle. 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