In a class of a certain school, 50 stduents offered mathematics , 42 offered biology and 24 offered both the subjets. Find the number of students offfereing.
(i) mathematics only,
(ii) biology only,
(iii) any of the two subjects.

In a class, 30% of the students offered mathematics, 20% offered chemistry and 10% offered both. If a student is selected at random, find the probability that he has offered mathematics or chemistry.

In a class of 50 students 32 likes Mathematics , 24 like Science and 12 like both. Find the number of students who like neither of the two subjects.

In a class of 50 students 32 likes Mathematics , 24 like Science and 12 like both . Find the number of students who like neither of the two subjects.

In a class of 60 students, 30 passed in Physics ,24 passed in Biology and 24 passed in both. Find the number of students who could have failed in both the subjects

In Class XI of a certain school, there are 30 students in a Mathematics class and 20 students in Biolog class. Find the number of students which are in Mathematics class or in Biology class in the following cases: (i) Two classes are conducted at the same time. (ii) Two classes are condcuted at different time and 5 students study both the subject

In Class XI of a certain school, there are 30 students in a Mathematics class and 20 students in Biolog class. Find the number of students which are in Mathematics class or in Biology class in the following cases: (i) Two classes are conducted at the same time. (ii) Two classes are condcuted at different time and 5 students study both the subject

20 teachers of a school either teach mathematics or physics 12 of them mathematics while 4 teach both the subjects . The number of teachers teaching physics only ,is

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.