[Archive!] Pure mathematics, physics, chemistry, etc.: brain-training problems not related to trade in any way - page 532

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Lizar:
Dude misses - should have bought three chocolates! ...
And seven half-litres.
 

For a hint:


 
a red square without a frame.
 

Alien

 
The red square in the frame is superfluous because it has more features in common. (square-4, big-4, framed-4, red-4), and all other figures are equal / imho.
 

There is no single answer. It could also be a circle.

tara: Инопланетянин

Yeah, Farnsworth.

 

All these figures have 4 simple features - colour, shape, size (visual), frame. The signs are considered equal.

If by size we understand not the height, but, suppose, the area of the figure and introduce additionally the area of the frame and the form of the frame, then - circle and 1 sq.

In fact, there's nothing to think about - the problem is visual and without a strictly described condition - so it has many solutions.

 
TheXpert:

For a hint:


A standard 'backgrounder' from the tests when hiring a programmer. Specific features are revealed. It is unpleasant, when the calculations are made for all variants, but you have to choose "only one". :)
 
There is an unequivocal answer.
 
TheXpert:
There is an unequivocal answer.
A small square.
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