The Birthday Paradox
Interactive Video
•
Science
•
6th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
The video explains the birthday paradox, which reveals that in a group of 23 people, there's a more than 50% chance that two people share a birthday. This counterintuitive result is derived from calculating the probability of people not sharing a birthday and multiplying these probabilities for each new person entering the room. The video demonstrates that with 57 people, the probability of shared birthdays exceeds 99%, illustrating the surprising nature of probability in large groups.
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2 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Why might it be surprising that two people in a group of 23 are likely to share a birthday?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the probability of sharing a birthday with 57 people in the room?
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