What goes up but never comes down?

You visit a home for specially-abled children on the occasion of Christmas where you meet with 50 children. You have a box of chocolates containing 50 chocolates exactly.

What if you were asked to one chocolate to each child in a manner that one chocolate still remains in the box? Is it possible?

Count the number of triangles in the given picture.

A blonde put eyeliner on her head. Why?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

In the four images below, can you find the odd one out?

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

What has one eye, but can’t see?

There is a place where if I stand up straight, I will still be considered sideways.