Directions: Seven persons B, D, F, H, K, M and R sit in a straight row. Some of them face North and the others face South (not necessarily in the same order). Left and right are taken from the point of view of the person concerned, according to the d…

Answer: D. Fourth to the left

Answer: (D) Fourth to the left

R faces South, so R's left is the observer's right: M is two places that way and faces North. B is second to the right of H, who sits at an end. If H were at the observer's right end (facing South), B would be third from that end and K would have to sit where M is, so H is at the left end facing North, B is third from that end and K sits between them. D faces North like B; K faces South. The person at the right end must face opposite to H (South), so D cannot sit there: D is between R and M and F is at the right end facing South.

Final arrangement (as seen by an observer standing to the South of the row, from his left to right): H (North), K (South), B (North), R (South), D (North), M (North), F (South).

K faces South, so K's left is the observer's right. Counting that way from K: B, R, D, M. M is fourth to the left of K.