Find the smallest sentence with all the English alphabet.

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

What am I?

There is something which you can be arrested for attempting but not for successfully completing.

You were playing ping pong with your friend. Suddenly the ball fell into a narrow metal pipe that was imbedded in the concrete surface of the floor one foot deep. Now you don't have any other ball and you desperately want to take it out and play. You and your friend have your shoelaces, your tennis paddle and a plastic water bottle. However, the bottle cannot fit into the pipe.

How will you take the ball out?

What can you serve, but never eat?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

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 ?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?