In the class of 40 students, 30 speak Hindi and 20 speak English. What is the lowest possible number of students who
speak both the languages? Answers:	A) 10	B) 15	C) 20	D) 25	E) 30

Rationale: let the student who speaks hindi - x let the student who speaks english - y as ( xuy ) - ( xny ) = total 30 + 20 - ( xny ) = 40 = 10 a )
Answer: A