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?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

What is at the end of a rainbow?

I am the first thing you need while camping.
I am always with the person named Marcos Valencia and Carrick.
But Pogba Zlatan and Rooney think I am wasteful and do not need me.
I am the second to the last thing to add when you are making a patch.

What am I?

Can you write down eight eights so that they add up to one thousand?

What number should come in place of the question mark below?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?