What is the word or phrase?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

If eleven plus two equals one, what does nine plus five equal?

Why do Chinese men eat more rice than Japanese men do ?

Prove that the below maths equation is true.

8 + 8 = 91

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

Which country gets ill every time?