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?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

Can you find out the total number of triangles in the given figure?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Move three sticks of the spiral below to form a square.

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Can you quickly find which two matchstick figures are identical?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Who has married many women but was never married?