2,71,855 students appeared at an examination. Out of them 1,27,968 failed. How many students passed ?

Study the following table and answer question. Number of students appeared in an examination from five cities : The ratio of the total number of students passed in the examination from cities A and D to that of students failed from cities B and E ?

If from college B in 2007 , 80 % of the students enrolled appeared in a competitive examination, out of which 75 % students passed, how many students passed the examination?

75% of the students passed in an examination. If 2 more students had passed the examination. 80% would have been successful. How many students are there in the class?

In a class of 25 students, 18 of them passed in maths, 14 of them passed in Science and 3 of them failed in both the exams. How many students passed in both the exams ?

2500 students appeared in an examination in which (1)/(5) of the total students are girls and remaining are boys 15% boys and 40% girls are failed. What is the percentage of passed students.

Suppose n students appear in an examination. Let X = the number of students who pass the examination. Suppose P(X=k)=lambdak^2 , then value of lambda is

Out of 105 students taking an examination for English and Mathematics, 80 students pass in English, 75 students pass in Mathematics and 10 students fail in both the subjects. How many students pass in only one subject ?