Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Why 1729 is a magic number? Answer Logically.

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

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

I make two people out of one. What am I?