How many times do a clock's hands overlap in a day ?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Which is the correct shadow of the bird?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

How can one talk without saying a single word?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Guess the hidden movie name?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?