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Fun problem from China's hardest test

33K views · Jan 11, 2026 · Science & Technology

MindYourDecisions

3.3M subscribers

Comments · 58

@smylesg · 8 months ago (edited)
<a href="https://www.youtube.com/watch?v=KB8Fu4-sZnY&t=160">2:40</a> It always bothered me that capital phi is smaller than lowercase phi.
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@julienn3078 · 8 months ago
Ayo is that the police in the background ?
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@ELD_font · 8 months ago
I thought that the distance from the head to the throat was the same as the one to the bottom of the neck
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@drive2613 · 8 months ago
Presh I think you should look out your window and see what’s going on 😂
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@Jason-yk3lq · 8 months ago
Hardest test might be China TST for IMO team selection or some other bio/physics TST? Minor gripe but cool problem nonetheless
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@PatricioINTP · 8 months ago
<a href="https://www.youtube.com/watch?v=KB8Fu4-sZnY&t=152">2:32</a> - The police went into pursuit mode with your little footnote.
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@khaitomretro · 8 months ago
I hate questions like this because doing a sanity check on the answer gives you a terribly distorted human. Their torso ends up far too short and their naval would be far too low down the torso. With legs 105cm long a normally proportioned human female would be closer to  2.15 meters tall.
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@ramanjamal-maths · 8 months ago
Pretty cool
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@NamNguyen-oe1fz · 8 months ago
Great
@atif.m.shaikh17 · 8 months ago
please include more gaocao test
@xiaolangwang4661 · 8 months ago
After getting the lower bound, we can choose B already, since there is exactly one correct answer
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@pierreabbat6157 · 8 months ago
I'm 1.5 m tall, and when I stand my xiphoid is 1 m above the ground. I thought the man must be really tall if his legs are over a meter long.
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