This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

How many sides does a circle have?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

What has many keys but can’t open a single lock?

You are given a set of weighing scales and 12 marbles. The scales are of the old balance variety. That is, a small dish hangs from each end of a rod that is balanced in the middle. The device enables you to conclude either that the contents of the dishes weigh the same or that the dish that falls lower has heavier contents than the other. The 12 marbles appear to be identical. 11 of them are identical, and one is of a different weight. Your task is to identify the unusual marble and discard it. You are allowed to use the scales three times if you wish, but no more. Note that the unusual marble may be heavier or lighter than the others. You are asked to both identify it and determine whether it is heavy or light