*Lewis Carroll *of Alice’s Adventures in the Wonderland was a mathematician in Cambridge. He had posed the following problem in one of his books:

**A box contains a handkerchief, which is rather white or black. You put a white handkerchief in this box and mix up the contents. Then you draw a handkerchief, which turns out to be white. Now, if you draw the remaining handkerchief, what is the probability of this one being white?**

*How likely is that you would enjoy such questions ?! 🙂*

Nalin Pithwa.