The centre of the third figure is empty. What digit should fit inside?

I ask Joseph to pick any 5 cards out of a deck with no Jokers.

He can inspect then shuffle the deck before picking any five cards. He picks out 5 cards then hands them to me (Jack can't see any of this). I look at the cards and I pick 1 card out and give it back to Joseph. I then arrange the other four cards in a special way, and give those 4 cards all face down, and in a neat pile, to Jack.

Jack looks at the 4 cards i gave him, and says out loud which card Joseph is holding (suit and number). How?

The solution uses pure logic, not sleight of hand. All Jack needs to know is the order of the cards and what is on their face, nothing more.

What question can you never answer yes to?

What's a single-digit number with no value?

Can you find out who is the kidnapper in below Picture and why, Explain ?

I am sure no one can have two things for dinner. what are they?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

What always comes into a house through the keyhole?