Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

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?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

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?