What goes up but never comes down?

Do You See It?

Find the 8 in the below-given Image.

What's the only room from which no one can enter or leave

What do you think with the below Picture ?

What has many keys but can’t open a single lock?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Can you count the number of triangles in the picture below?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

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.