WHAT DIFFERENT IN PIC ? | Taarak Mehta ka ooltah chashma Paheliyan Hindi puzzles with answer #shorts

In an examination, 40% of the candidates wrote their answers in Hindi and the others is English. The average marks of the candidates written in Hindi is 74 and the average marks of the candidates written in English is 77. What is the average marks of all the candidates?

The Pie-graph given here shows the number of students opting different subjects in a school. If there are a total of 720 students, then by studying the pie-graph answer the questions. The difference in the number of students studying Hindi and Sanskrit subjects is

Write a short note on rusting. What are the causes and effects of it? Explain different methods adopted to prevent rusting