How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

If eleven plus two equals one, what does nine plus five equal?

Can you find out the total number of triangles in the given figure?

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

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

There are 4 big houses. They are made from the materials: red marble, green marble, white marble and blue marble.

* Mrs Jennifer's house is somewhere to the left of the green marble one and the third one alone is white marble.
* Mrs Sharon owns a red marbles house and Mr Cruz does not live at either end, but lives somewhere to the right of the blue marbles house.
* Mr Danny lives in the fourth house, while the first house is not made from red marble.

Who lives where, and what is their house made from?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?