You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

You can see three almost identical images below. Can you spot the odd one out from them?

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

We have two identical balls in terms of diameter and weight. However, one of them is solid and the other is hollow.

Without knocking the ball, can you find the solid ball?

I have an eye but still cannot see.

Who am I?