In a class of 60 students, 30 students have taken Physics; 30 Chemistry and 30 Biology. There are 10 students each who h
This outcome reflects quantitative reasoning, where ratio, percentage and series logic determine correct calculation. Option A captures this correctly because it meets mathematical and logical criteria, consistent with textbook descriptions and experimental observations in aptitude and reasoning.
Ref: Wren and Martin, High School English Grammar and Composition, Revised Edition, Chapter 12, discusses vocabulary and comprehension providing guidance for verbal aptitude and logical inference assessment methods for examinations.