Data & ProbabilityProbability
The Sticker Album Problem
Finding the last few stickers takes longer than the rest combined
The album is one sticker short, and every new pack is nothing but doubles. Is that bad luck, or is something else going on?
You'll find out
- Why an album fills fast, then stalls
- What the last five stickers cost
- How swapping beats buying
Why it matters
Loot boxes, cereal-box prizes and “collect them all” promotions run on this math. It always saves the worst for last.
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