I have not used this ask.com for search the keyword position. In which country this ask.com is using commonly

Very few users go for ask.com and I see most of them are from Asia.

Yes the search engine is famous in Asia only. It shows results same as Google.

Hmmm I don't think Ask.com is famous in any country :)

Ask is out of the search business - they use Google and are now concentrating on becoming like they once were a Q&A site - when they were askjeeves.com