Why do we preferably have round manhole covers and not square ones?

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

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

On a beautiful Sunday morning, You ordered a hot tea to your hotel room and suddenly you remember an important thing that needed to be done right now will take around 3 minutes to complete.
Like most people you like your tea to be hot while drinking so, when should you pour cream in the tea?
1. straight away
2. Just people, you drink the team
3. Its does not matter

What is the coolest letter in the alphabet?

What number when divided in half becomes zero?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?