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

28 teachers of a school either teach mathematics or physics 20 of them mathematics white 4 teach both the subjects . The number of teachers teching physics only ,is

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

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 teachers teach mathematics and 4 teachers teach both physics and mathematics. How many of these teachers teach physics?

In a school there are 30 teachers who teach Mathematics or Physics. Of these teachers, 20 teach. Mathematics and 15 teach Physics, 5 teach both Mathematics and Physics. The number of teaches teaching only Mathematics 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 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 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 ?