The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.
Boxes are labeled but all labels are wrong!
You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.
How many such operations are necessary to correctly label the boxes?
On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.
Is this even possible? How can it be?
Can you write down eight eights so that they add up to one thousand?
There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?
If EELS + MARK + BEST + WARY = EASY
What does HELP + BARK + WARD + LEAD equal?
Railroad Crossing, look out for the cars. Can you spell that, without any R's ?
Move four matchsticks to the below square to form three squares?
Identify the hidden meaning behind this picture?
If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?
The more it dries, the wetter it becomes. Can you tell what it is?
My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?
Jigsaw puzzles soared in popularity during the great depression, as they provided a cheap, long-lasting, recyclable form of entertainment.