With the help clues provided in the image, can you find the 5 digit key?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

Take away the whole and some still remain. What is it?

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

In the image given, you can find several triangles. Can you count them all?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?

Can you spot the hidden girl in the picture below?

What am I?