What has to be broken before you can use it?

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?

What does it mean?

If an electric train is travelling south, then which way is the smoke going?

How can you take 2 from 5 and leave 4?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

You can see three almost identical images below. Can you spot the odd one out from them?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10