Pure maths, physics, chemistry, etc.: brain-training tasks that have nothing to do with trade [Part 2] - page 32
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If you try to multiply 18 by 19 in the same way, you immediately understand why the Soviet schools decided to instil the multiplication table in your head straight away...
It's a visual one, though. :)))
Children's
It's a visual one, though. :)))
Children's
? = 6
(1+?=7)
pako, move the denominator of the expression from right to left, give the similarities and solve the linear equation with respect to k.
P.S. This is not the problem to solve here.
It's a funny task. It should only be solved inside the brain. It's destructive to a weak brain, better not to read it.
The right ring of Mobius. A radius-vector rotates in the XOU plane, a segment at its end rotates in the plane perpendicular to the XOU, at a speed 2 times smaller than the radius-vector from the XOU. The segment at the end of the radius-vector is extended to infinity in both directions. As a result, we obtain a two-dimensional self-intersecting undirected surface. Which line is the self-intersection of the infinite Mobius?
It's a fun task. It should only be solved inside the brain. It's destructive to a weak brain, better not to read it.
The right ring of Mobius. A radius-vector rotates in the XOU plane, a segment at its end rotates in the plane perpendicular to the XOU, at a speed 2 times smaller than the radius-vector from the XOU. The segment at the end of the radius-vector is extended to infinity in both directions. As a result, we obtain a two-dimensional self-intersecting undirected surface. Which line would be the self-intersection of the infinite Mobius?
Critical error. Gone to reboot.
Such problems should be banned )
Critical error. Gone to reboot.
These tasks should be banned)
Slant, man, you better give them the cow!!!
Guys - help me solve a problem for third grade... :-) I'm still solving it myself...
The garage had 25 cars in one row and 32 in the other. About 20 cars left. How many cars are left?
There are three ways to solve this problem. Thank you.
1. 25 + 32 - 20 = 37.
2. ...
3. ...
Looks like I've solved it :-)
2. 25-20+32 = 37
3. 32-20+25 = 37
Guys - help me solve a problem for third grade... :-) I'm still solving it myself...
The garage had 25 cars in one row and 32 in the other. About 20 cars left. How many cars are left?
You have to solve it in three ways. Thank you.
1. 25 + 32 - 20 = 37.
2. ...
3. ...
Seems to be solved :-)
2. 25-20+32 = 37
3. 32-20+25 = 37
They fool kids at school.
It's the same solution, but it's the law of addition.