What does this rebus riddle means ?

John was drowned by he was not wet. How?

Bobby and Wilbur decided to take their respective car out of the garage and race. None of them cheated and they both stood at the start time and decided to cover a distance in full throttle. The first to reach the mark was to be declared the winner.

Upon reaching the finishing mark, they found out that Bobby's car was 1.2 times faster than Wilbur's. Now, Wilbur had reached the mark about 1 minute and 30 seconds later than Bobby. Bobby's car reached the mark of 60 MPH on average.

Can you calculate the distance between the starting mark and the final mark with the help of the given data?

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

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

What does this Rebus Picture mean?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

Can you place three balls such that the equation shown in the picture holds true?