Can you place three balls such that the equation shown in the picture holds true?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

What does the below image rebus riddle means ?