What's the only room from which no one can enter or leave

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Can you identify the famous TV character from the rebus below?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What is at the end of a rainbow?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?