Mukesh

Mr Issac used to like puzzle his students now and then. One day he wrote following message on board and asked students to guess topic of discussion:

XVXRY XCTXXN HXS XQXXL XND XPPXSXTX RXXCTXXN

Can you guess the topic

There is this 6 digit number! The tens digit is 2 more than the ones digit. The hundreds digit is 2 less than the tens digit. Now the hundreds digit is again equal to the thousands digit. The ten thousands digit is 2 more than the thousands digit and the hundred thousands digit is 2 less than the ten thousands digit. What is the digit?

During Pizza party, Penny asks Sheldon his age. As we all know Sheldon, he winks and tells Penny that day before yesterday he was 43 and next year he will be 46. Can you help Penny find Sheldon's exact birth date. Lets assume current year is 2000

You are a prisoner sentenced to death. the Emperor offers you a chance to live playing a simple game.
He gives you 50 black marbles, 50 white marbles and 2 empty bowls.
He then says, " Divide these 100 marbles into these 2 bowls. You can divid them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls arount . You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if marble is Black... you will die."

How do you divide the marble up so that you have the gretest probobability of choosing a WHITE marble?