In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

I shave every day, but my beard stays the same. What am I?

What number when divided in half becomes zero?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

What begins with T, ends with T, and has T in it?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

I have an eye but still cannot see.

Who am I?

Eight of us go fourth, not back, to protect our king from an attack. What are we?