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

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

What have one eye but still cannot see?

What has many teeth, but cannot bite?

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Find the number of squares in the below-given picture.

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.