In a class 18 students offered Physics, 23 offered Chemistry and 24 offered Mathematics. Of them, 13 offered both Chemistry and Mathematics, 12 offered both Physics and Chemistry, 11 offered both Mathematics and Physics and 6 offered all three. Find the number of students in the class.

Among the number of students in a class 25 read physics.30 read chemistry and 20 read mathematics.If 12 read both physics and chemistry,15 read chemistry and mathematics,18 read physics and mathematics and 10 read all the three subjects find the number of students in the class.

There are 102 students in a class. In an examination, 50 of them failed in Mathematics, 45 failed in Physics and 40 failed in Chemistry, 32 failed in exactly two of these three subjects. Only one student passed in all the three subjects. Find the number of students failing in all the three subjects.

20 students are getting 'letter marks' either in Mathematics or in Advanced Mathematics. If 12 of them get letter marks in Mathematics and 9 of them in both, how many of them get letter marks in Adv. Mathematics.

In a class of 50 students,every student plays football or cricket.If 32 of them play football and 35 play cricket,then find the number of students who play both the games and only football.

Among a group of 90 students,40 like mathematics and 60 like chemistry.If 6 students like neither,find how many like both the subjects?

For a certain test, a candidate could offer English or Hindi or both the subjects. Total number of candidates was 500, of whom 350 appeared in English and 90 in both the subjects : How many appeared in Hindi ?

For a certain test, a candidate could offer English or Hindi or both the subjects. Total number of candidates was 500, of whom 350 appeared in English and 90 in both the subjects : How many appeared in Hindi and English both?

For a certain test, a candidate could offer English or Hindi or both the subjects. Total number of candidates was 500, of whom 350 appeared in English and 90 in both the subjects : How many appeared in English Only ?

For a certain test, a candidate could offer English or Hindi or both the subjects. Total number of candidates was 500, of whom 350 appeared in English and 90 in both the subjects : How many appeared in Hindi only ?