# random chords, how many intersections?

**Published:** June 16, 2026
**Author:** 3Blue1Brown
**Source:** YouTube — Andrej Karpathy
**Language:** en-US
**HTML:** https://aiqazaqstan.com/en/articles/random-chords-how-many-intersections

It's time for a new puzzle of the month. Imagine you choose 10 random chords on a circle. The puzzle is, what's the expected number of intersection points inside that circle? And what about if instead it was 100 [music] randomly chosen chords? Hang on, hang on, hang on, I hear…

> From the original source: **YouTube — Andrej Karpathy**
> [Read full article at YouTube — Andrej Karpathy](https://www.youtube.com/shorts/wGffBCfrAsE)

**Tags:** #YouTube

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