Question

49 Directions (Q. Nos. 42-44) Read the following information carefully to answer the questions that follow.
In a survey of 25 students, it was found that 15 have taken Mathematics, 12 have taken Physics and 11 have taken Chemistry, 5 have taken Mathematics and Chemistry, 9 have taken Mathematics and Physics, 4 have taken Physics and Chemistry and 3 have taken all the three subjects.
42. The number of students who have taken only Physics, is (b) 3 (C) 5 (d) 6
43. The number of students who have taken only two subjects, is (a) 7 (b) 8 (c) 9 (d) 10 (a) 2​