Probability The Birthday Problem

Summary

View full lesson: ed.ted.com/lessons/check-your-intuition-the- How many people need to be in a room before there's a 50% chance that two of them share the same Before we start this video, let's ask you a question. If there are 23 randomly chosen people in a room, what is the The surprisingly small answer to this question is what's often dubbed "The Video by David Lippman to accompany the open textbook Math in Society ( opentextbookstore.com/mathinsociety/). Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: ... It's common to have to deal with combinatorics when solving I bet you $100 dollars. If you put just 23 people in a room, there is a 50% chance that two of them share the exact same For my daughter, who said it was 'spooky' that she knows two people with the same Mike Pound discusses hash collisions & the Mount St. Mary's University mathematics professor Jonelle Hook finds the