John was piloting a plane behind a car but was never able to overtake it. Why?

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?

Why do people go to bed?

Next Number in the Series,

5, 16, 49, 104, ?

When we see 2 but call 10?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.