Seven persons A, B, C, D, E, F and G are sitting in a straight line (not necessarily in the same order) facing north, only two persons sit between F and G, and G sits second to the left of B. D sits third to the left of C. E sits exactly between G and B, and B sits at the extreme right end of row. Who amongst the following sits exactly in the middle of the line?
Solution
B sits at the extreme right end, G sits 2nd to the left of B and E sits exactly between G and B. This gives:
_ _ _ _ G E B.
Only 2 persons sit between F and G which gives:
_ F _ _ G E B
D sits 3rd to the left of C which gives
D F _ C G E B and the remaining place is taken by A.
The final arrangement is:
D F A C G E B.
The person sitting exactly in the middle is C.
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