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

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

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?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

A sundial has the fewest moving parts of any timepiece. Which has the most?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

I have an eye but still cannot see.

Who am I?