How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

What goes through cities and fields, but never moves?

There were five men at church, and it started raining while they were outside. The four that ran still got wet, but the one that was still stayed completely dry. Why did he stay dry?

What brings you down but never up?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

It belongs to you, but other people use it more than you do. What is it?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?