What does this below rebus puzzle mean?

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?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

What is full of holes but still holds water?

Which number should replace the question mark?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

Can you count the number of lines in the below picture?