What is the riddle which can be asked all day with a different correct answer each time.

81 x 9 = 801. What must you do to make the this equation true?

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 ?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

When is the top of a mountain similar to a savings account?

What part of Turkey has the most feathers?

What is the word or phrase?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

How many times do a clock's hands overlap in a day ?

Imagine you are in a room with no windows or doors. How will you get out?