Physics Vs Chemistry

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In a class 40% of the students offered Physics 20% offered Chemistry and 5% offered both. If a student is selected at random, find the probability that he has offered Physics or Chemistry only.

In a school, students must take at least one of these subjects: Maths, Physics or Chemistry. In a group of 50 students, 7 take all three subjects. 9 take Physics and Chemistry only, 8 take Maths and Physics only and 5 take Maths and Chemistry only. Of these 50 students, x take Maths only, x take Physics only and x + 3 take Chemistry only. Draw Venn diagram, find x, and hence find the number taking Maths.

A class has 172 students. The following data shows the number of students opting one or more subjects: Mathematics 125, Physics 95, Chemistry 65 Mathematics and Physics 55 Mathematics and Chemistry 53 Physics and Chemistry 48 Mathematics, Physics and Chemistry 43 The number of students who opted only Physics is

Marks Obtained by Five Students in Physis and Chemistry What is the respective ratio between the total marks obtained by P in Physics and Chemistry together to the total marks by T in Physics and Chemistry together ?

Each of question given below is based on the given diagram. The diagram show students studying either Physics, Chemistry, Biology or combinations of these subjects. Which of the following is NOT represented in the above diagram ? 1)The students who study Biology, Chemistry as well as Physics. 2)The students who study Chemistry and Biology but not Physics 3)The students who do not study any of the three subjects. 4) The students who study Biology but not Physics and Chemistry. 5) The students who study Physics and Chemistry but not Biology.