Can you name some countries which do not have the alphabet 'A' in them?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Take one out and scratch my head, I am now black but once was red. What am I?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

What kind of storm is always in a rush?

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.