Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

Count the number of lines in the image below ?

How can you take 2 from 5 and leave 4?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

What does an Island and the letter T have in common?

People put me on the table and cut me but do not eat me. What am I?

Which number should replace the question mark?