Check your intuition: The birthday problem - David Knuffke

what makes fireflies light up at night emily a geest
05:05
What makes fireflies light up at night? - Emily A. Geest
diana play pink vs black challenge with wednesday
10:19
Diana play Pink vs. Black Challenge with Wednesday
ellie loses her key luggage hotel mystery adventure
24:58
Ellie Loses Her Key & Luggage! Hotel Mystery Adventure
how smart are crows katharina brecht
04:49
How smart are crows? - Katharina Brecht
sick song more nursery rhymes cocomelon abckidtv
32:45
Sick Song | +More Nursery Rhymes - Cocomelon (ABCkidTV)
i heard it was your birthday official music video family fun pack
02:43
I Heard It Was Your Birthday Official Music Video - Family Fun Pack
359,957 views

Check your intuition: The birthday problem - David Knuffke with tags ted, ted-ed, ted education, ted ed, birthday, birthday problem, twins, leap year, calendar, probability, combinatorics, paradox, counterintuitive

View full lesson: http://ed.ted.com/lessons/check-your-intuition-the-birthday-problem-david-knuffkeImagine a group of people. How big do you think the group would have to be before theres more than a 50% chance that two people in the group have the same birthday? The answer is probably lower than you think. David Knuffke explains how the birthday problem exposes our often-poor intuition when it comes to probability. Lesson by David Knuffke, animation by TED-Ed.