想用餐廳WIFI? 泰國餐廳老闆讓你先解一道題!

Owners of one restaurant have left diners stumped with a mind-boggling Wi-Fi brain teaser.

近日，一家餐廳的老闆出的一道超級複雜的Wi-Fi智力題難倒了一衆來此用餐的食客。

It appears the owners of YaYa's Thai restaurant in Texas, US, have a strange sense of humor after putting up a poster with a mathematical equation for the password.

這起事件發生在美國德克薩斯州的一家YaYa's泰國餐廳。經營者似乎有種奇怪的幽默感，他們貼出了一張寫有數學方程式的紙，解開方程式才能獲得密碼。

A photo of the sign was posted to social website Reddit, where users - even those well-versed in math - were equally perplexed.

有人將這張紙的照片上傳到了社交網站Reddit上，而Reddit的用戶，即使是其中精通數學的網友都被難住了。

Some users suggested the problem was a trick question, while others said the math equation appears to have several solutions.

一些用戶認爲此題是道捉弄人的問題，另一些用戶則稱這道數學方程式似乎有多種答案。

One said the equation was a 'summation of a binomial probability density function' - and we have no idea what that means either.

還有個用戶則稱，這道方程式是“二項式概率密度函數求和”--然而我們仍找不到答案。

The user who uploaded the photo promised to attempt some of the suggested solutions and report back with his findings.

上傳照片的Reddit用戶承諾，會對部分網友給出的答案進行嘗試，並對其結果進行報告反饋。

It is unclear why Yaya's owners decided to make it so difficult to log on at the restaurant. However, some have suggested it could be that they became tired of people stealing the signal.

目前還不清楚爲何Yaya's的老闆想出一道如此難的題目以阻止顧客上網。不過，也有人認爲他們厭倦了大家蹭網的行爲。