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

What month of the year has 28 days?

A monk has a very specific ritual for climbing up the steps to the temple. First, he climbs up to the middle step and meditates for 1 minute. Then he climbs up 8 steps and faces east until he hears a bird singing. Then he walks down 12 steps and picks up a pebble. He takes one step up and tosses the pebble over his left shoulder. Now, he walks up the remaining steps three at a time which only takes him 9 paces. How many steps are there?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Which Burger Is Different in below image?

What breaks yet never falls, and what falls yet never breaks?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

I am white when I am dirty, and black when I am clean. What am I?