I look at you, you look at me I raise my right, you raise your left. What am I?

John was visiting his friend Jacob. He found out that his friend's wife had just killed a burglar in self-defense.
John asks Jacob about what happened and he told that "His wife was watching television when suddenly the bell rang. She thought that it is her husband Jacob but she found the burglar who attacked her instantly and she got so frightened that she killed the burglar immediately with the knife.
John asked the police to arrest his friend's wife. Why?

Which English verb becomes past tense just by rearranging the letters?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

Can you find the 09 errors in the picture below?

Why is the Hole below a Lock?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

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