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.

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.

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.

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?

Form the pair of linear equations in the following problems,and find their solution graphically.(i)10 students of class X took part in a Mathematics quiz.If the number of girls is 4 more than the number of boys,find the number of boys and girls who took part in the quiz.

In a survey of 60 men,it is found that 25 men studied the newspaper H,26 men studied the newspaper T,26 men studied the newspaper I,9 men studied the newspaper H and T,8 men studied the newspaper T and I and 3 men studied all the three newspapers.Then find (i)The no of mens who read atleast one newspaper.

There are three newspapers A, B and C. Out of 100 persons, 60read A, 50 read B, 50 read C, 30 read A and B, 20 read B and C, 30 read A and C, 10 read none. How many read all the newspapers?

In a survey of 100 persons it is found that 42 read India Today, 30 Sunday, 28 Outlook, 10 India Today and Sunday,'5 India Today and Outlook, 8 Sunday and Outlook and 3 read all the three. How many read none of the three magazines?