Find out the missing number in the picture attached:

What does the below image rebus riddle means ?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

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?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?