Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Can you find the key in the picture below?

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 ?

The dirtier I get, the whiter I look. Who am I?

How many triangles can you find in this given picture?

Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?