Spot 5 differences in two Christmas tree below:

What is the fastest way to double your money?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

John was drowned by he was not wet. How?

Three cars are driving on a track that forms a perfect circle and is wide enough that multiple cars can pass anytime. The car that is leading in the race right now is driving at 55 MPH and the car that is trailing at the last is going at 45 MPH. The car that is in the middle is somewhere between these two speeds.
Right now, you can assume that there is a distance of x miles between the leading car and the middle car and x miles between the middle car and the last car and also, x is not equal to 0 or 1.
The cars maintain their speed till the leading car catches up with the last car and then every car stops. In this scenario, do you think of any point when the distance between any two pairs will again be x miles i.e. the pairs will be x distance apart at the same time ?

What runs around the whole yard without moving?

The answer I give is yes, but what I mean is no. What was the question?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

What can jump higher than a building?