I have feet, but no legs. Which animal Am I?

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside.
The man said, "Oh! I am really sorry, I thought this was my room."
He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man.
What made her suspicious of that man? He might have been genuinely mistaken.

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

Why is it very easy to weigh a fish?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What kind of band never plays music?

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.