Logical Reasoning — PPSC previous year questions

Gandhi House has C, D, E and F. The short ones are C and E, since D and F are tall. Of these, C wears glasses and E does not. ```puzzle:grid cols: A, B, C, D, E, F row: Nehru, Nehru, Gandhi, Gandhi, Gandhi, Gandhi row: short, short, short, tall, short, tall row: glasses, no glasses, glasses, glasses, no glasses, no glasses ``` The short Gandhi House student without glasses is E.

A, C and D wear glasses. So B, E and F are the three without them. F is one of the two tall students. That leaves B and E as the short pair without glasses. ```puzzle:grid cols: Student, House, Height, Glasses row: A, Nehru, short, yes row: B, Nehru, short, no row: C, Gandhi, short, yes row: D, Gandhi, tall, yes row: E, Gandhi, short, no row: F, Gandhi, tall, no ``` So (c). Option (b) fails because C wears glasses, and (d) because F is tall.

Q coordinates Operations. Operations is only a support course for N and P. So P, who also has Marketing, must coordinate Marketing. L's two subjects are Finance and IT, and O has the same two. O supports Finance, so O coordinates IT. Three professors coordinate Finance. Only L, M and N are left for that. So IT is L's support course. That leaves Strategy as M's support course - the single professor supporting Strategy. ```puzzle:grid cols: Professor, Coordinates, Supports row: L, Finance, IT row: M, Finance, Strategy row: N, Finance, Operations row: O, IT, Finance row: P, Marketing, Operations row: Q, Operations, Marketing ``` O coordinates the IT course.

Q coordinates Operations and has Marketing as the other subject, so Q supports Marketing. Operations is the support course of N and P. P also has Marketing, so P coordinates Marketing. O supports Finance. L has Finance and IT, the same pair as O. So O coordinates IT, and L coordinates Finance with IT as support. Finance is coordinated by three professors other than O, that is L, M and N. N's support is Operations. That leaves M's support course. Strategy is a support course for exactly one professor, and it is the only course left for M. ```puzzle:grid cols: L, M, N, O, P, Q row: Finance, Finance, Finance, IT, Marketing, Operations row: IT, Strategy, Operations, Finance, Operations, Marketing ``` So M supports Strategy.

Q coordinates Operations, so Q's Marketing subject is a support course. P has Marketing and Operations, and Operations supports both N and P, so P coordinates Marketing. L's subjects are Finance and IT. O has the same pair with Finance as support, so O coordinates IT. Finance is coordinated by three professors other than O. P, Q and O are already taken, so L, M and N coordinate Finance. L supports IT, N supports Operations, and M takes Strategy, the lone Strategy support. ```puzzle:grid cols: L, M, N, O, P, Q row: Finance, Finance, Finance, IT, Marketing, Operations row: IT, Strategy, Operations, Finance, Operations, Marketing ``` So L, M and N coordinate Finance.

L and O share the same two subjects, Finance and IT. O supports Finance, so O coordinates IT and L coordinates Finance. Q coordinates Operations and also has Marketing, so Q supports Marketing. P is the other professor with Marketing, so P coordinates Marketing and supports Operations along with N. Besides O, three professors hold Finance as coordinators, so M and N join L there. The only support slot left for M is Strategy. That matches the clue that Strategy supports just one professor. ```puzzle:grid cols: Finance, Marketing, Operations, IT, Strategy row: coord L/M/N, coord P, coord Q, coord O, coord — row: support O, support Q, support N/P, support L, support M ``` Marketing has exactly one coordinator (P) and one supporting professor (Q). Finance has three coordinators, Operations two supporters and Strategy no coordinator at all. IT is also one-and-one, but it does not appear among the options.

B, the engineer, is not on an upper berth, and only the architect shares his berth type, so the two of them hold the two lower berths. M (pathologist) and H (lawyer) keep off the middle, so they take the two upper berths, leaving T, K and D in the middle. D is neither journalist nor architect, so D is the doctor, and K, who shares the doctor's berth type, is the journalist. The lower-berth architect can only be R; the data are sufficient, so (d) is wrong. ```puzzle:stack stack: M (Pathologist) and H (Lawyer), T (Pharmacist) and K (Journalist) and D (Doctor), B (Engineer) and R (Architect) ```

Only the architect shares B's berth type, so B and the architect hold the two lower berths. M and H stay off the middle, so they take the two upper berths, leaving T, K and D in the middle. D is neither journalist nor architect, so D is the doctor; K shares his berth type and is the journalist, and R is the lower-berth architect. ```puzzle:stack Upper: M, H Middle: T, K, D Lower: B, R ```

B the engineer and the architect are the only two on one berth type, so they hold the two lower berths. M and H stay off the middle, so they are on the upper berths. Of T, K and D in the middle, D is the doctor and K the journalist, so the architect beside B is R. The lower berths are held by B and R, a pair not offered in (a), (b) or (c). ```puzzle:grid cols: Berth, Occupants row: Upper, M (pathologist) and H (lawyer) row: Middle, T (pharmacist), K (journalist), D (doctor) row: Lower, B (engineer) and R (architect) ```

B, the Engineer, is not on the upper berth. Exactly one other person, the Architect, shares B's type of berth. The middle has three berths, so B must be on a lower berth. M (Pathologist) and H (Lawyer) are not on the middle berth and are not Architects. So they take the two upper berths. That leaves T (Pharmacist) and two of R, K, D in the middle. The remaining professions — Architect, Doctor and Journalist — go to R, K and D. D is neither Journalist nor Architect, so D is the Doctor. K shares the berth type of the Doctor, so K and D are both in the middle. K is the Journalist. R is the Architect on the lower berth beside B. ```puzzle:grid cols: Upper, Middle, Lower row: M (Pathologist), T (Pharmacist), B (Engineer) row: H (Lawyer), K (Journalist), R (Architect) row: —, D (Doctor), — ``` The middle berths are occupied by D, K and T.