A. Have you ever been to any countries in this world?
B. How many countries have you been to in this world?
- Are these sentences grammatical?
Thanks a million!
1...You don't need "in this world". All the countries we know about are in this world.
A..Have you been to any other countries?
B...How many other countries have you been to?
"other" is used to exclude your native country.
You can also say 'foreign' instead of "other".