Replace the question mark with the number below given a simple math problem.

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

During which month do people sleep the least?

Five thieves looted a bank and they ran away in a car. The bank staff informed the police and they began the search of their car in their jeep. They found them on a road and chased them eventually catching them. The light that is used to fill the number plate was broken on the thieves' car. Also, the headlights of the jeep police were not working. How were the police able to catch the thieves then?

I know a nine-letter word having only one vowel.
Do you ?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

Prove that the below maths equation is true.

8 + 8 = 91

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?