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

John was piloting a plane behind a car but was never able to overtake it. Why?

What is the centre of gravity?

who is silent in the parliament?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Solve below rebus puzzle?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

I cannot talk, but I always reply when spoken to. What am I?

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?