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In a class, 80% of students pass in maths exam and 70% of students pass in English exam. 10% of students fail in Both subjects and if 144 students pass in Both subejects. Find the total number of students.

In a class of 35 students, 18 students opt Maths, 12 students opt Maths but not Science. Find the number of students who opt both subjects. Also find the number of students two opt Science but not Maths. It is given that each student opt atleast one subject.

In the class of 100 students, the number of students passed in English is 46, in Maths is 46 and in Commerce is 58. The number who passed in English and Maths is 16, Maths and commerce is 24 and English and commerce is 26, and the number who passed in all subjects is 7. Find the number of the students who failed in all subjects.

In a premier B-school having 100 students in the MBA final year 15 students specializes in Marketing and HR. 17 students specializes in HR and Systems, 16 students specializes in Marketing and Systems. The number of students specializes in only one field is equal and is 22 in each field of specialization. How many students specializes in all three fields viz-Marketing HR and Systems?