What does this simple rebus mean?

I travel all around the world but always stay in the corner. What am I?

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

An old Woman left INR 33,333 to be divided equally among two fathers and two sons and each was to receive INR 11,111.
How was this possible?

What four weights can be used to balance from 1 to 30 pounds?

There were five men at church, and it started raining while they were outside. The four that ran still got wet, but the one that was still stayed completely dry. Why did he stay dry?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

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

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?