Robert Langdon is a fictional character. He is the main character in 'Angels and Demons' and 'The Davinci Code'. Robert is a scholar and professor of religious symbols.
His parents gave it to him on his 10th birthday, and he still uses it until now.
Robert Langdon, character of Dan Brown's bestseller "Illuminati" didn't work for CERN as scientist, but he solved the case about the stolen antimatter, after the boss of CERN asked him to.
CERN or European Organization for Nuclear Research ..
The Fibonacci sequence is not something that can be "solved"; he merely recognised the assortment of numbers as being the first few members of that sequence.
Go to the bathroom.
No, he was a fictional character, so he could not have authored a book. However, if you search sacred feminine book, there are many books published on the topic. They are just not the exact one talked about in The DaVinci Code.
In the movie "The Da Vinci Code" it was revealed that Langdon had cracked the code Apple.