why number 8549176320 is one of a kind?

What is full of holes but still holds water?

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?

Take one out and scratch my head, I am now black but once was red. What am I?

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

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

I don't get anymore wetter, no matter how much rain falls on me.

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?