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

In a school, there are 20 teachers who teach Mathematics or Physics. Of These, 12 teach Mathematics, 12 teach Physics. How many teach both the subject?

In a school with 727 students,600 students are enrolled for mathematics and 173 students are enrolled in both mathematics and physics.How many students are enrolled in Physics.

In a school with 727 students,600 students are enrolled for mathematics and 173 students are enrolled in both mathematics and physics.How many students are enrolled in Physics only.

The number of students who take both the subjects Mathematics and Chemistry is 30. This represents 10% of the enrolment in Mathematics and 12% of the enrolment in Chemistry. How many students take atleast one of these two subjects ?

The probability that Ramu pass the examination in both mathematics and Physics is 0.5, the probability of passing neither Mathematics nor Physics is 0.1,the probability of passing Mathematics is 0.75 What is the probability of passing Mathematics or Physics?

Consider the following data in respect of marks of 50 students in mathematics and physics. Find coefficient of variation of mathematics and physics.

The probability that Ramu pass the examination in both mathematics and Physics is 0.5, the probability of passing neither Mathematics nor Physics is 0.1,the probability of passing Mathematics is 0.75 What is probability of passing Physics?

The mean and S.D. of marks obtained by 50 students of a class in three subjects mathematics , physics and chemistry are given below? which of the three subjects the highest variability in marks and which shows the lowest?

Consider the following data in respect of marks of 50 students in mathematics and physics. Which subject shows more consistent?

The probability that a student passes in a physics test is 2/3 and the probability that he passes both the physics and English test is 14/45. If the probability that he passes at least one test is 4/5, find the probability that the student does't pass the physics test