Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

Can you solve this picture maths equation?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Before Mount Everest was discovered, what was the highest mountain in the world?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

What you cannot hold but it is yours?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

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?