When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Can you write down eight eights so that they add up to one thousand?

I have an eye but still cannot see.

Who am I?

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

John was piloting a plane behind a car but was never able to overtake it. Why?

Which point will the car reach to go out?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?