Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

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.

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

An explorer goes on an exposition in the jungle. He sets up camp in the middle of the jungle. The next morning he sees something with a head and a tail, but he is not afraid. What did he see in his bag?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

Solve below rebus puzzle?

What two things can you never eat for breakfast?

What Time Should the last watch show in the below figure?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?