Can you replace the question mark with the correct number in the below table sequence?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

What seven-letter word has hundreds of letters in it?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

What goes up but never comes down?

Using Only Five 5's and any mathematical operator make sum as 37

You can see three almost identical images below. Can you spot the odd one out from them?

I know a nine-letter word having only one vowel.
Do you ?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

If all the below statements are true

1. Gianni was either in Italy or France in 1997.
2. If Gianni did not kill Versace, Hilton must have killed him.
3. If Versace died of suffocation, then either Gianni killed him or Versace committed suicide.
4. If Gianni was in Italy in 1997, then Gianni did not kill Versace.
5. Versace died of suffocation, but he did not kill himself.

Who killed Versace and where was Gianni in 1997?