一些逻辑训练的谜题：娜塔莎、十二点钟和茶
我的同事，娜塔莎喜欢小孩子，就给他们出了一些题。而我在十二点钟和娜塔莎闲谈时，总会为她补充一些，而她也觉得这还不错。到了下午，我们一起喝茶时，我们会把饼干放在鸟笼边，猫头鹰则会将其啄成碎片。我们的生活就是这样悠闲地度过的，和这所大学里的本科生的终日忙碌仿佛处在两个世界，他们没有心情欣赏校园里的建筑多么有艺术感，也看不见柳树和池塘蕴含着十四行诗——就算你不是莎士比亚也可以发现——只等着被抓出来和记录下来，但我们是刚好反过来的。
在这里，我会归纳一些我们设计的，助益于逻辑能力的谜题。
在这里，我会归纳一些我们设计的，助益于逻辑能力的谜题。
1179 个评论
A1: Oczywiście(Obviously), no matter how we place the signs, the six corners of the biggest hexagon will have at least 3 minuses or at least 3 pluses, and any given three corners among them can form a triangle, thus it's impossible to keep all triangles in the picture inconsistent trinities.
A2: Actually, if we place the signs this way(the central one is a minus sign),
all those signs of the same kind are well segregated, and through the only lines they're connected with each other via, we can easily see there're only 7 consistent trinities of the minus symbol, and 4 consistent trinities of the plus symbol.
And we sure don't need to count or calculate to know there're more than 22 triangles in this picture, so there will be more than 11 inconsistent trinities. That is to say, without further constructing new points and lines, we already have more inconsistent trinities than the consistent ones.
A2: Actually, if we place the signs this way(the central one is a minus sign),
all those signs of the same kind are well segregated, and through the only lines they're connected with each other via, we can easily see there're only 7 consistent trinities of the minus symbol, and 4 consistent trinities of the plus symbol.
And we sure don't need to count or calculate to know there're more than 22 triangles in this picture, so there will be more than 11 inconsistent trinities. That is to say, without further constructing new points and lines, we already have more inconsistent trinities than the consistent ones.