please tell how to approach this type of question
Read the information and answer the questions that follow. Five friends—Ramesh, Suresh, Tanveer, Umesh, and Vikram—each present one paper to their class on mathematics, history, biology, chemistry, or dermatology—one day a week, Monday through Friday. (i) Vikram does not do chemistry and does not give his presentation on Tuesday. (ii) Suresh makes the dermatology presentation, and does not do it on Monday or Friday. (iii) The mathematics presentation is made on Thursday. (iv) Tanveer presents his presentation, which is not on Chemistry, on Wednesday. (v) The biology presentation is on Friday, and not by Umesh. (vi) Ramesh makes his presentation on Monday. 49. What day is the Chemistry presentation made? (a) Friday
(b) Monday (c) Tuesday
50. What presentation does Vikram do? (a) Chemistry (c) Mathematics
(d) Wednesday
(b) Dermatology (d) Biology
51. What day does Umesh make his presentation on? (a) Monday
(b) Tuesday