What does this rebus riddle means ?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

My location can be determined by the below rebus.
So where am i ?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

What does this rebus means ?

PROG WORKRESS