In a class of 70 students, each student passed Hindi or English. Of them, 15 students passed both Hindi and English, and 40 students passed Hindi. Find the number of students who passed English.

In a class of 50 students, each student passed Maths or English. If 10 students passed both Maths and English, and 30 students passed Maths, the find the number of students who passed English.

In a class of 50 students ,each student passed Maths of English ,If 10 students passed Maths ,then find the number of students who passed English

In a group of students, 50 students passed in english, 60 students passed in mathematics and 40 students passed in both the subjects. Find the number of students who passed either in english or in Mathematics.

Using a Venn diagram or otherwise, solve the following problem: In a class of 70 students, each student has taken either English or Hindi or both. 45 students have taken English and 30 students have taken Hindi. How many students have taken both English and Hindi?

In a class of 60 students 40 passed in English, 35 failed in Mathematics. How many students passed both in English and Mathematics.

In a class, 300 students speak Hindi, 150 students speak English and 100 students speak both Hindi and English. Then, total number of students is