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

In a school there are 20 teachers who teach mathematics or physics. Of these, 12 teach mathematics and 4 teach both physics and mathematics. How many teach physics ?

In.an examination. 50%of the condidates have passed in mathematics 50% have passed in physics, while 41% have passed in both the subjects. Find the total number of candidates if..41 of them have failed in both subjects. (By., using set theory).

36 candidates appeared for an examination, 15 candidates passed I mathaematics, 15 candidates passed in physics, 20 candidates passed in chemistry, 3 candidates passed only in matematics, 4 candidates passed only in physics, 7 candidates passed only in chemistry and 2 candidates in all the three subjects. Then the number of cendidates who passed only in two subjects is-

In a B school there are 15 teachers who teach marketing or finance. Of these 8 teach finance and 4 teach both marketing and finance . How many tech marketing but not finance ?

A class has 175 students following is the description showing the number of students studying one or more of the following subjects in this class mathematics 100 physics 70 chemistry 46 mathematics and physics 30 mathematics and chemistry 28 physics and chemistry 23 mathematics physics and chemistry 18.how many students are enrolled in mathematics alone physics alone and chemistry alone?are there students who have not offered any of these three subjects.

A survey shows that 75% of the stubents of a school like Mathematics and 65% like Physics. If x% of the students like both Mathematric and Physice, find the maximum and minimum values of x.

In a class of 30 pupils, 12 take mathematics, 16 take physics and 18 lake chemistry. If all the 30 pupish take at least one subject and no one take all those, then the number of pupish taking 2 subjects is-

There are 100 students in a class. In an examination, 50 of them failed in Mathematics, 45 failed in Physics, 40 failed in Biology and 32 failed in exactly two of the three subjects. Only one student passed in all the subjects. Then the number of students failing in all the three subjects_____

There are 100 students in a class . In a examination, 50 of them failed in Mathematics , 45 failed in Physics, 40 falled in Biology and 32 failed in exactly two of the three subjects .Only one student passed in all the subjects .Then the number of students failing in all the three subjects

Elevent books consisting of 5 mathematics, 4 physics and 2 chemistry are place don a shelf. The number of possible ways of arranging them, on the assumption that the books of the same subject are all together, is-