John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

What number when divided in half becomes zero?

You can see it everyday, But cannot touch it at will. What is it?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What brings you down but never up?