Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Find the missing number in the image below.

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

What is so fragile that saying its name breaks it?

The dirtier I get, the whiter I look. Who am I?