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

If it took eight men ten hours to build a wall, how long would it take four men to build it?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

What makes this number unique: 8,549,176,320?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Different lights make me strange by changing me into different sizes. What am I?

How far can you walk into the woods?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

Do You See It?