What is full of holes but still holds water?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

We have arranged an array of numbers below. What you have to do is use any kind of mathematical symbol you know excluding any symbol that contains a number like cube root. You can use any amount of symbols but you have to come up with a valid equation for all of them.

0 0 0 = 6
1 1 1 = 6
2 + 2 + 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

What work can one never finish?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?