Count the number of balls in picture below:

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 ?

Find the next number in the sequence

5 12 24 36 ?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

I make two people out of one. What am I?

Be active and find the killer in the picture Riddle below.

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

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

Which is heavier: a ton of bricks or a ton of feathers?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?