It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

Can it be possible to build a house that has all its four walls facing towards the South?

What goes through cities and fields, but never moves?

People make me, save me, change me, raise me. What am I?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

There is something which you can be arrested for attempting but not for successfully completing.

What jumps when it walks and sits when it stands?