Exercise on the development of interhemispheric connections of the brain.
Need to find all the number 1 to 90. It is recommended to repeat every week.
Share in comments a time, Skoko find all the numbers, we'll see who's the fastest))))
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Why are there 2 8's and no 81's?
Any assumptions?
I know 18 is upside-down 81, but it seems intentionally misleading. (also I cannot read Russian)
It seems that in circle should be 81, but 1 is erased.