What does this Rebus Picture mean?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

When it is alive we sing, when it is dead we clap our hands. What is it?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?