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How many triangles have?





Тhink nicely.
How many cubes is made of the triangle?
There are 3 crumbs on the table. How will you move the middle lug without touching it?

Which symbol should you put between the two digits to get a number smaller than 5 and greater than 4?

Find the differences


Help; The first and second pictures have 4 differences, third has 3.
See the solutions
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