如何只用3刀将蛋糕分成8等份？

解决脑筋急转弯是保持思维新鲜的最佳方法之一，并且可能会帮助您从新的角度看待问题。

Brainteaser fans were left scratching their heads after a魔鬼般小的难题 left social media users baffled.

Brainteaser fans were left scratching their heads after a魔鬼般小的难题 left social media users baffled.

But fear not, because we've got the answer - and it's a piece of cake.

但不用担心，因为我们已经找到了答案 - 而且这只是小菜一碟。

The conundrum was posted on Instagram's Threads by user @ellis_puzzles, who asked a seemingly simple question: how do you divide a cake into eight equal piece?

用户@ellis_puzzles 在 Instagram 的 Threads 上发布了这个难题，他提出了一个看似简单的问题：如何将蛋糕分成八等份？

Surely, it sounds like a piece of cake at first - but there's a twist in that you're only allowed to do it in three slices.

当然，一开始这听起来像是小菜一碟，但有一个不同之处，那就是你只能分成三片。

The full post reads: "Only puzzle champion with math and geometry knowledge can answer this question.

完整的帖子写道：“只有具有数学和几何知识的拼图冠军才能回答这个问题。

"There are 7 people at your birthday party. How can you divide a round cake for 8 people (including you) making only 3 cuts?"

“你的生日聚会有7个人，一个圆蛋糕你怎么能只切3刀就给8个人（包括你）分呢？”

This devilish little dilemma caused a stir among social media users with various solutions flying around across 80 comments.

这个可怕的小困境在社交媒体用户中引起了轰动，80 条评论中流传着各种解决方案。

One user, nunocastelobranco, said: "3 vertical cuts, one radial cut, and then two diameter cuts in 2 opposite directions."

一位名叫 nunocastelobranco 的用户说道：“3 次垂直切割，1 次径向切割，然后是 2 个相反方向的两次直径切割。”

Not to be outdone, illio_ja offered an alternative with: "1. Split in half, so you have 2 thinner cake, stack it together and cut it 2 times with + or × shape".

illio_ja 也不甘示弱，提出了另一种选择：“1.分成两半，这样你就有了 2 个更薄的蛋糕，将它们叠在一起，然后用 + 或 × 形状切割两次”。

Elsewhere, servagi1990 chimed in with another solution: "1 cut from the side through the middle, then 2 cuts from the top. 1 vertical through the middle and 1 horizontal through the middle".

在其他地方，servagi1990 提出了另一种解决方案：“1 从侧面穿过中间切割，然后从顶部切割 2 次。1 次垂直穿过中间，1 次水平穿过中间”。

While user winstonsmith2112 said: "Slice the cake horizontally, making two layers, then make the following two cuts vertically. Four people get cuts from the top of the cake, and four people get cuts from the bottom of the cake

而用户winstonsmith2112则表示：“将蛋糕水平切两层，然后垂直切两刀。四个人从蛋糕顶部切，四个人从蛋糕底部切

"Too easy."

“太容易了。”

Did you manage to solve it? Regardless of whether you cracked it or not, tackling regular brainteasers like this is a fantastic way to flex your creative thinking muscles.

你设法解决了吗？不管你是否成功，解决像这样的常规脑筋急转弯都是锻炼你的创造性思维能力的绝佳方法。

Aaron Seitz, PhD., professor of psychology and director of the Brain Game Centre at the University of California in Riverside told Real Simple: "Studies show that staying mentally fit is important for long-term cognitive health, but the difficulty is figuring out exactly how to do it.”

加州大学河滨分校心理学教授兼脑游戏中心主任 Aaron Seitz 博士告诉《Real Simple》：“研究表明，保持心理健康对于长期认知健康很重要，但困难在于准确地弄清楚该怎么做。”

He also added that some games work differently for different people and finding your own challenge is probably the best thing to do and, "if you think about diet and exercise routines, some things work better for some people than others, and the same is true with brain games."

他还补充说，有些游戏对不同的人来说效果不同，找到自己的挑战可能是最好的事情，“如果你考虑一下饮食和锻炼习惯，有些事情对某些人来说比其他人更有效，同样的道理通过脑力游戏。”