How many persons face north

Solution

H and F sit second to the right of each other. Only one person sits between F and C, who sits at the extreme right end. If C sits at place no. 8, then F will sit at place no. 6. If F face south direction then, H sits at place no. 4 and faces north direction. D and E sit immediate left of each other but neither of them sits at extreme left end. E and F face opposite directions. We know that F faces south so, E will face north direction. If E sits at place no. 3, then D will sit at place no. 2 faces south direction. One person sits between A and B. At most three persons sit between B and G, who faces south. A doesn’t sit immediate left of C. Immediate neighbors of F face opposite direction to F. B cannot sit at place no. 7 as at most three persons sit between B and G. So, B sits at place no. 5 and A sits at place no. 7. A doesn’t sit immediate left of C. It means C will face south. Immediate neighbors of F i.e. B and A will face north. Final arrangement as shown below: