Of the five boys A, B, C, D and E two are good, one is poor and two are average is studies. Two of them study in post-graduate classes and there in under-graduate classes. One comes from a rich family, two from middle-class families and two from poor families. One of them is interested in music, two in acting and one in sports. Of those studying in under-graduate classes, two are average and one is poor in studies. Of the two boys interested in acting, one is a post-graduate student. The one interested in music comes from a middle-class family. Both the boys interested in acting are not industrious. The two boys coming from middle-class families are average in studies and one of them is interested in acting. The boy interested in sports comes from a poor family, while the one interested in music is industrious. E is industrious, good in studies, comes from a poor family and is not interested in acting, music or sports. C is poor in studies inspite of being industrious. A comes from a rich family and is not industrious but good in studies. B is industrious and comes from a middle-class family. Name the boys studying in post-graduate classes.

B. A, E

A blacksmith has five iron articles A, B, C, D and E, each having a different weight.
(i)  A weights twice as much as B.
(ii)  B weights four and a half times as much as C.
(iii)  C weights half as much as D.
(iv)  D weights half as much as E.
(v)  E weights less than A but more than C. E is lighter in weight than which of the other two articles ?

A. A, B

A sales representative plans to visit each of six companies M, N, P, Q, R and S exactly once during the course of one day. She is setting up her schedule for the day according to the following conditions :
(i). She must visit M before N and R.
(ii). She must visit N before Q.
(iii). The third company she visits must be P. Which of the following could be the order in which the sales representative visits the six companies ?

A. M, S, P, N, R, Q

(i). P, Q, R, S, T and U are six students procuring their Master's degree in six different subjects -- English, History, Philosophy, Physics, Statistics and Mathematics.
(ii). Two of them stay in hoste, two stay as paying guest (PG) and the remaining two stay at their home.
(iii). R does not stay as PG and studies Philosophy.
(iv). The students studying Statistics and History do not stay as PG.
(v). T studies Mathematics and S studies Physics.
(vi). U and S stay in hostel. T stays as PG and Q stays at home. Which of the following pairs of students stay at home ?

B. QR

Six plays -- A, B, C, D, E and F are to be staged, one on each day from Monday to Saturday. The schedule of the plays is to be in accordance with the following :
(i) A must be staged a day before E.
(ii) C must not be staged on Tuesday.
(iii) B must be staged on the day following the day on which F is staged.
(iv) D must be staged on Friday only and should not be immediately preceded by B.
(v) E must not be staged on the last day of the schedule. Which of the following plays in on Monday ?