What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

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

The more of this there is, the less you see. What is it?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Which famous Hollywood movie name is hidden in the below rebus?

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

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