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

What number when divided in half becomes zero?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

What Adam and Eve do not have but the rest of the people have?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.

Can you make four (4) nines (9) equal 100?

Can you make a six-letter word using the letters N, A and B ?