what's the probability of getting a king or a queen from a pack of 52 cards?

Can you tell a 3D object that has just two surfaces?

Can you find the mistake in the below statement?

Do You See It?

Find the Goldfish below the given Image.

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?

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

Which country gets ill every time?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Our product and our sum always give the same answer. Who are we?