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

Vin Diesel is pulling a theft and has planned to run away with all the cash kept in the safe. But the only way to open the safe is the 13 character password. He has a set of five clues given to him by a trustworthy source.

Exactly two of the below statements are false.
The password is contained within this sentence.
The password is not in this hint.
The password is within only one of these statements.
At least one of the above statements is a lie.

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.

A girl says this to her best friend: “I was born in 1955, and I celebrated my 17th birthday last weekend.” Her best friend thinks she’s lying, but she’s actually correct. How is that possible?

Name a key which is hardest to turn.

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

what one word does the below rebus identifies?

How can a man go eight days without sleep?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?