One day, two mathematicians, Peter and Mark, meet each other in a cafe. They haven't had a chance to speak to each other since graduating from University 25 years ago.
After conversing for a couple of minutes, Peter asks Mark: "So do you have any kids?"
Mark answers: "Yes, I have three children."
"How old are they?", inquires Peter.
Mark answers: "If you want to find out their age, you will have to solve a riddle! Just like we use to do in the good old days!"
Mark goes on: "Here's your first hint: THE MULTIPLICATION OF THE AGE OF MY THREE CHILDREN EQUALS 36"
Peter takes out his pen and writes the hint on a piece of napkin.
After a few moments, Peter asks Mark to continue: "The second hint is, THE SUM OF THE AGE OF MY THREE CHILDREN EQUALS THE NUMBER OF WINDOWS IN THE BUILDING IN FRONT OF YOU" says Mark.
Peter looks at the building and tells Mark: "OK, I need another hint."
Marc replies: "THE ELDEST OF MY CHILDREN HAS BLUE EYES"
Peter replies: "Ahhhh! Now I know the age of your three children!"
WHAT IS THE AGE OF ALL THREE CHILDREN?

After conversing for a couple of minutes, Peter asks Mark: "So do you have any kids?"
Mark answers: "Yes, I have three children."
"How old are they?", inquires Peter.
Mark answers: "If you want to find out their age, you will have to solve a riddle! Just like we use to do in the good old days!"
Mark goes on: "Here's your first hint: THE MULTIPLICATION OF THE AGE OF MY THREE CHILDREN EQUALS 36"
Peter takes out his pen and writes the hint on a piece of napkin.
After a few moments, Peter asks Mark to continue: "The second hint is, THE SUM OF THE AGE OF MY THREE CHILDREN EQUALS THE NUMBER OF WINDOWS IN THE BUILDING IN FRONT OF YOU" says Mark.
Peter looks at the building and tells Mark: "OK, I need another hint."
Marc replies: "THE ELDEST OF MY CHILDREN HAS BLUE EYES"
Peter replies: "Ahhhh! Now I know the age of your three children!"
WHAT IS THE AGE OF ALL THREE CHILDREN?

