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# How Many Humans Have the Same Number of Body Hairs?
- URL: https://www.cascadepbs.org/show/infinite-series/episode/how-many-humans-have-the-same-number-of-body-hairs-6pt5b2/
- Published: 2024-04-02T22:52:11.000Z
- Updated: 2025-08-21T06:35:22.000Z
- Description: Do two people on the planet have the exact same number of body hairs?
- Author: Cascade PBS Staff
- Tags: Infinite Series, Season 1, Episode 3, #ZZZ_Episode_88eaf409-236d-4da1-8a41-94ecbc56da4d, #episode, #ZZZ_Show_0efdefa6-fb6f-44e5-96f1-baf9a8c090e2, #geo-us, #v1.16

Do two people on the planet have the exact same number of body hairs? How about more than two? There’s a simple yet powerful mathematical principle that can help you find out the answer. Kelsey Houston-Edwards breaks down the Pigeonhole Principle and explains how it can be used to answer some pretty perplexing questions.