the best answer: zero
'have studied' or 'has studied' I have studied you have studied (singular) he, she or it has studied we have studied you have studied (plural) they have studied Some examples (using abbreviations) are: I've studied more than enough science. The trainees have really studied hard. She has studied just enough to pass the test.
All the digits! Muhammad ibn Musa al-Khwarizmi gave the West all of the Hindu digits and much more besides. Please see the link.
The present perfect form of "study" is "have studied." For example, "I have studied for my exam."
The past tense of study is studied. I want to study English when I go to college. I studied English when I was in college.
The past tense of "study" is "studied," and the past participle is also "studied."
He studied at Philosophical Institute.he studied mathematics,Biology but did not finish at the University of Vienna.
Weather and Climate are studied in meteorology.
The present perfect tense of the verb "study" is "have studied."
Gandhi studied Law and he practiced to be a Barrister.
Rudyard Kipling studied in England
yes, both can be studied.