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The task for first-graders (2 photos)

Today, with his son doing homework. I read the task, I needed to restart the brain. Can someone explain to thread like this?



and that he textbook



Source:
Pictures
A clever logic problem that has broken the brain of more than one smart person, try to solve
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In the notebooks and textbooks for first published here are the puzzles.
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Task. School Course
I've been looking at the picture for 15 minutes and I can't figure out where the cat is, try it yourself, maybe you can do better.
Only hard-working mathematicians will immediately understand where the catch in this example is.
Collections inserts with the products of the Western automotive industry
Even venerable mathematicians scratch their heads, counting how many tiles it takes to finish repairs.
The task for "indigo children"
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Selection of entertaining tasks with answers
The task that schoolchildren solve playfully, revelling in their wit, adults thoughtfully scratch the back of their head
...
A clever logic problem that has broken the brain of more than one smart person, try to solve
...
A school problem with a catch for those who want to strain the gyrus on a languid winter evening
...
The problem of a wise man who bought and sold a cow, for those who want to test their intelligence
...
Mathematical warm-up found in an old written notebook in the attic
...
In the notebooks and textbooks for first published here are the puzzles.
...
What skills a first-grader needs
...
Advice to mothers of future first-graders
...
Soviet films for children
...
The task of the 165-year-old is haunted mathematicians
...
Simple coffee problem to remember math teacher with gratitude
...
Five children's puzzles, which are introduced into a stupor adults
...
Mathematical problem for which an elderly teacher strokes the head
...
An elementary problem for those who have been friends with mathematics since childhood
...
A savvy task to remember a math teacher with an unevil, quiet word
...
Task. School Course
...
I've been looking at the picture for 15 minutes and I can't figure out where the cat is, try it yourself, maybe you can do better.
...
Only hard-working mathematicians will immediately understand where the catch in this example is.
...
Collections inserts with the products of the Western automotive industry
...
Even venerable mathematicians scratch their heads, counting how many tiles it takes to finish repairs.
...
The task for "indigo children"
...
Grandma's way to scare aphids so she leaves the garden instantly
...
Which car will not take your family on vacation?
...
Selection of entertaining tasks with answers
...
The task that schoolchildren solve playfully, revelling in their wit, adults thoughtfully scratch the back of their head
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