An interesting read
http://www.knowledgehub.co.in/2010/03/why-obama-used-22-pens-for-single.html
http://www.knowledgehub.co.in/2010/03/why-obama-used-22-pens-for-single.html
The purpose of the blog is to serve to one's appetite for quizzing,mathematical & logical puzzles,mind bogglers and perhaps any other thing that ends with a QUESTION MARK (?). Just to give an incentive the blog will also have a point system to display the monthly standings of the participants, with bonus points for the earliest answer. The answer is to be given as a comment below the corresponding post, and remember to leave your name if you answer as anonymous.