How do you go from 98 to 720 using just one letter?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

What can you see in the middle of March and April that you can never see in any other month?

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

12345 a famous South Indian actor
567 is a path in jumbled form
8 & 10 are same letters
9 is one among the first six alphabets.
WHO AM I?

I add 5 to 9 and get 2. The answer is correct, so what am I?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

I look at you, you look at me, I raise my right, you raise your left. What am I?