The mean of marks secured by 35 students in division A of class X is 65, 45 students of division B is 61 and that of 70 students of division C is 59. What is the mean of marks of the students of three divisions of Class X?
Study the Bar diagram carefully and answer the questions. The Bar diagram shows the trends of foreign direct investment (FDI) into India from all over the World (in Rs. crores).