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

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

What building has the most stories?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

If two's company, and three's a crowd, then whats four and five ?