Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Prove that the below maths equation is true.

8 + 8 = 91

Can you move 2 matchsticks to form four equal sized squares.

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

Why do you find that most of the buildings are deprived of the 13th floor?

What has 88 keys?