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

The more of this there is, the less you see. What is it?

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

How many triangles can you find in this given picture?

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?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Decode below rebus
D
N
A
T
S , D

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

How many words can a pen with half refill write?