Direction: Study the following information carefully and answer the given…
2020
Direction: Study the following information carefully and answer the given questions.
Eight persons i.e. A, B, C, D, P, Q, R and S are sitting around two inscribed square tables in such a way that four persons are seated at the four corners of each of the inner square and outer square. Persons sitting at the inner square and outer square are facing each other.
C faces the one who sits 2nd to the right of S. Q is neither an immediate neighbour of S nor C. D faces R and is an immediate neighbour of Q. A sits immediate left of R. B faces P. Both B and C are not immediate neighbours. Neither P nor A face outside.
How many persons sit between S and D, when counted to the right of S?
- A.
None
- B.
Two
- C.
One
- D.
Either One or Two
- E.
Both sit on different table
Show answer & explanation
Correct answer: B
Concept
In a two inscribed (concentric) square arrangement, four people sit at the corners of the inner square and four at the corners of the outer square. Inner members face outward and outer members face inward, so every inner person directly faces exactly one outer person. "Facing inside" means looking toward the centre (an outer seat); "facing outside" means looking away from the centre (an inner seat). For a person, their right and left are decided from their own facing direction, and "between" is counted only among people on the same square.
Apply the clues
"Neither P nor A faces outside" means P and A look toward the centre, so both P and A are on the OUTER square.
"A sits immediate left of R": A and R are neighbours on the same square, so R is also on the OUTER square.
"D faces R": since R is outer, D must be the inner person opposite R, so D is on the INNER square.
"D is an immediate neighbour of Q": Q shares D's square, so Q is on the INNER square.
"B faces P": P is outer, so B is the inner person opposite P; B is on the INNER square. So the inner square already holds B, D, Q, and the outer square already holds P, A, R.
Only C and S remain for the last inner and last outer seat. If S were outer, then C would be inner; but then "Q is not a neighbour of S" cannot be met without forcing C next to B, breaking "B and C are not neighbours". So that branch fails, and the consistent choice is C OUTER and S INNER: inner = {B, D, Q, S}, outer = {C, A, R, P}.
Now place them on the ring. "Q is neither a neighbour of S nor C" keeps Q away from S; "B and C are not neighbours" keeps B's outer partner away from C; and "C faces the one 2nd to the right of S" fixes the rotation. The only order that satisfies all of these is, clockwise, inner = S, B, Q, D and outer = A, P, C, R, with each inner seat facing the outer seat on the same radial line.
Count and cross-check
Starting at S and moving in S's right direction along the inner square, the seats reached in order are B and Q, and then D. So exactly two persons sit between S and D when counted to the right of S, which is the value "Two".
S and D end up on the SAME (inner) table, so any "different table" reading is ruled out.
Every clue is satisfied by a single, unique arrangement, so the count is fixed and cannot be ambiguous.
Going the other way round (to S's left), D is in fact S's immediate neighbour with nobody in between — this asymmetry confirms that the right-side direction is the one that yields the larger count.