Express the following in the language of ratios :
The number of students passing a Mathematics test is of the number that appeared.
students appeared for Mathematics and Science Examination together, students passed only in Mathematics and passed only in Science. If all the students have passed in at least one subject. Find the number of students who passed in Mathematics.
What is the fraction of students who failed in mathematics exam, if the total number of students who appeared in the exam is 65 and the number of students who passed is 57?