If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Why do you find that most of the buildings are deprived of the 13th floor?

Can you count the number of triangles in the given picture?

Identify the 10 differences between the two given pictures.

I ask Joseph to pick any 5 cards out of a deck with no Jokers.

He can inspect then shuffle the deck before picking any five cards. He picks out 5 cards then hands them to me (Jack can't see any of this). I look at the cards and I pick 1 card out and give it back to Joseph. I then arrange the other four cards in a special way, and give those 4 cards all face down, and in a neat pile, to Jack.

Jack looks at the 4 cards i gave him, and says out loud which card Joseph is holding (suit and number). How?

The solution uses pure logic, not sleight of hand. All Jack needs to know is the order of the cards and what is on their face, nothing more.

Which fur should we be getting from the Lion?

Can you count the number of quadrilaterals in the picture below?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?