[Archive!] Pure mathematics, physics, chemistry, etc.: brain-training problems not related to trade in any way - page 327

[Alexey Subbotin]

there's clearly a catch in the problem, definitely in the word "overlap":))

[richie]

Or maybe you don't need to think about it, if it's for first graders?

[Alexey Subbotin]

alsu >>:
в задаче явно какой-то подвох, причем определенно в слове "наложение":))

Yeah, right. There are many ways to apply it, even in a very perverted way:))) There is a solution after all: )))))

[Sceptic Philozoff]

There is probably a catch. It's quite possible that the two equal figures are overlapping here. You never know what's going to be posted on the hubra...

[Alexey Subbotin]

Richie >>:

А может быть тут и думать не нужно, если задачка для первоклашек?

It's not for first graders, just that the condition is not quite correct - next to such problems you should put a note "Smart problem. Grade 5." So that the problem solver immediately looks for the answer in a non-traditional way. Well, it's like the problem "Which is lighter - a kilo of wood or a kilo of iron".

[richie]

By the way, it doesn't say you can't bend the paper.

[Alexey Subbotin]

Mathemat >>:
Вероятно, подвох есть. Вполне возможно, что обе равные фигуры здесь перекрываются. Мало ли что на хабре выложат...

No, it's all cut with scissors.

[Alexey Subbotin]

Richie >>:

Кстати, не сказано, что гнуть бумагу нельзя.

and even necessary:))) warmth:)

[richie]

Obviously, the area of one figure is 9 cells.

[Sceptic Philozoff]

Wittgenstein's task is for Richie only, the rest of us are maaaal-tee!

"Brain-exploding", in the author's terminology, the wording is as follows:

let's tie a rope around the equator of the globe and a football, then add another metre to each and put it back on. Question - in which case, the globe or the ball, the gap will be bigger?

2 alsu: well then the problem is elementary. True, the parts come out not two, but three...