(i) The given bar graph provides information about the marks obtained by a student in an examinations in four different subjects.
(ii) The student is poorest in science because the height of the bar representing the marks obtained in science is the lowest.
(iii) The student is best in mathematics because the height of the bar representing the marks obtained in mathematics is the highest.
(iv) In Hindi and mathematics he got more than 40 marks. He scored 55 marks in Hindi and 70 marks in mathematics.