what does this below rebus represent identXQQQQQME

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?

What is black when you buy it, red when you use it, and gray when you throw it away?

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?

Spot 5 differences in two Christmas tree below:

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Solve the mathematical equation in the picture below.

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?