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13 coins, one fake, and a digital scale

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What it tests: Adapting to the tool actually given: a digital scale shows weights; it isn't a two-pan balance.

Prompt length: 99 characters, roughly 20 tokens (estimate). · Evaluation results for many models ↗

Prompt
I have 13 coins, one of them is fake. I also have a digital scale. How do I identify the fake coin?

How to grade it

Weigh the coins one at a time (or in known-size groups) and find the one whose weight differs. A good answer notes that you need the genuine weight (most coins share it) and that the fake could be heavier or lighter. A three-weighing balance scheme is wrong for this tool.

Answer check: Reasoned from the premise; several valid procedures exist.

Scorecard tick what the model got right: 0/4

Runs in your browser; nothing is saved or sent.

0/4

Where models usually fail

The classic balance-scale procedure with left and right pans; nonsensical groupings of 13.

Source

Author
GitHub @cpldcpu and contributors
From
Misguided Attention
Exact file or post
https://github.com/cpldcpu/MisguidedAttention/blob/bbae011e1fb5ce239373cb2f381787baec0dd236/README.md
Licence
CC0 1.0
How we use it
Full text (licence allows reuse)

Testing a local model? Check first whether it fits your hardware with Can I run this LLM?

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