Freelancer:
Tychox
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Brainteasers!
I'm uploading a couple brainteasers from each available category ("Codes", "Math" and "Physics"). I have corrected grammar and embellished a bit, but wanted to still keep them short and to the point. (I can also translate to Spanish if you want). I also think that you should expand/provide a bit more of an explanation for the solutions presented! Cheers!