The study or collection of currency is called:
Accounting
Ledger
Economics
Numismatics
How to 40 students In a class 16 study English 22 accountancy and 26 economics 5 student study English and economics 14 students accountancy economics and 2 study all the three subjects if each student studies at least one of the three subjects find the number of students who study (1)English and accountancy(2) English accountancy but not economics?