Which number should replace the question mark?

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

What is the word or phrase?

I am working in a bus company. The company recently went under expansion and therefore there was not enough room for all the buses. As a result, twelve buses had to be stored outside.

If the company decides to expand the garage space by forty percent, enough space to accommodate the current buses will be created leaving enough space for twelve more buses if the need arises in future.

Can you calculate the number of buses that the company owns at present?

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

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

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?