# \#coupon-collectors-problem

**URL:** https://scanalyst.fourmilab.ch/tag/coupon-collectors-problem/1211.md

[Latest](https://scanalyst.fourmilab.ch/latest.md) · [Categories](https://scanalyst.fourmilab.ch/categories.md) · [Tags](https://scanalyst.fourmilab.ch/tags.md)

---

## [The Coupon Collector's Problem](https://scanalyst.fourmilab.ch/t/the-coupon-collectors-problem/883)

<div class="topic-metadata">

**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 0\
**Last updated:** [14 February 2022 14:27 UTC](https://scanalyst.fourmilab.ch/t/the-coupon-collectors-problem/883 "2022-02-14T14:27:35Z")

</div>

Why does it take so long to “collect them all”?