If two's company, and three's a crowd, then whats four and five ?

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?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

You need to arrange three 7 and mathematical symbols to form number 1?

John was visiting his friend Jacob. He found out that his friend's wife had just killed a burglar in self-defense.
John asks Jacob about what happened and he told that "His wife was watching television when suddenly the bell rang. She thought that it is her husband Jacob but she found the burglar who attacked her instantly and she got so frightened that she killed the burglar immediately with the knife.
John asked the police to arrest his friend's wife. Why?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?