As difficult it is to find the job of your dreams, it is equally taxing to find the right person for the job for the employers. Companies post job openings on various online platforms apart from conducting walk-in interviews.

The online posts have a lot of reach that helps these companies to connect with the right candidate. To ensure this happens, the HR team generally drafts an attractive and approachable job description and requirements. They make sure that they are clear with the eligibilty critera.

In 2004, Google came up with an interesting approach for its job opening. Google had put up a billboard in the heart of Silicon Valley which posed a complex mathematical question.

The interesting part was that the questions was not easy to crack at all. In fact, someone would have to access Google itself to crack the equation.

There were many other such mysterious banners all over at  Cambridge, Mass., subway stop. The banners have commuters puzzled to what it meant. It was discovered later on that these nameless billboards were actually Google’s way to post a job opening.

The ad read, “{first 10-digit prime found in consecutive digits of e}.com “

The answer to the above equation was 7427466391.com, that lead people to a website that presented an additional problem. Once people were able to crack the second puzzle, the web page revealed it was all part of an unique recruiting stunt from Google.

As of 2015, Google was receiving more than 3 million applications each year, out of which only 0.2 percent of them lead to actual hires.

This maths puzzle stunt was one of its kind and Google has since not done it again. Though one would agree that it is an interesting way for a tech giant to look for its new recruits.