I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Look at the picture and find out which square is not linked with any of the other squares.

How can you write nineteen in a manner that if we take out one, it becomes twenty?

In which direction should the missing arrow point?

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

I have Rs.50 and I spend it in the way as below.

Which country gets ill every time?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What number should come in place of the question mark below?