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

O_er_t_o_

Complete the missing letters of the given word.

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

John was a very careless driver, so his owner Jacob gave him an offer that he will get an incentive of Rs.30 for every bottle box he delivered without breaking it and he will be charged Rs.90 for every bottle box he broke. Jacob gave John 100 bottles-box to deliver. After delivery, Jacob paid John Rs.2400. How many bottles-box did John break?

Can you guess the name of the month by looking the below rebus ?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Buy me, smell me or deliver me, I do not change.

Who am I?

In the picture given below, can you find out which digit will take place of the question mark?

What does it mean?