When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

A man dies of old age on his 25 birthday. How is this possible?

I look at you, you look at me, I raise my right, you raise your left. What am I?

A family is trapped in a jungle. There is a bridge which can lead them to safety. But at one time, the bridge can only allow two people to pass through. Also, all of them are afraid of the dark and thus, they can't go alone.

Father takes 1 minute to cross, the mother takes 2 minutes, the son takes 4 and the daughter takes 5 minutes. While crossing the time taken will be according to the slower one. How can they all reach the other side in the minimum possible time?

To attend world science seminar, A famous chemist from Mexico visit
London. In the lab, the scientist was killed and his six assistants were under suspicion of killing the chemist.
Name of six assistants: Austin, Wayne, Dege, Oscaru, Lingard, and Rojo.
He left a note "76-20-44 79-16-22-7"

A local detective Jack was called to solve the case,

After reading the note, Jack instantly asked the police to arrest the murderers.

Who are the murderers?

How can one talk without saying a single word?

What can you catch but never throw?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?