8 Books, B1, B2, B3, B4, B5, B6, B7 and B8 are in two rows 4 in each facing North and South. B5 is between B1 and B8 but just opposite to B2. B6 is at one end of a line and is just next to the right of B2 or either B6 book is just after B2 book. B7 book which at one end of a line, is just diagonally opposite to B1 book.

Which book is just opposite to B7 book?
(a) B3
(b) B4
(c) B3 or B4
(d) Data is inadequate

Question

8 Books, B1, B2, B3, B4, B5, B6, B7 and B8 are in two rows 4 in each facing North and South. B5 is between B1 and B8 but just opposite to B2. B6 is at one end of a line and is just next to the right of B2 or either B6 book is just after B2 book. B7 book which at one end of a line, is just diagonally opposite to B1 book.

Which book is just opposite to B7 book? 
(a) B3
(b) B4
(c) B3 or B4
(d) Data is inadequate

ONLiNE UPSC · Accepted Answer

North-facing row:
B6 &ndash; B2 &ndash; B3/B4 &ndash; B7
South-facing row:
B1 &ndash; B5 &ndash; B8 &ndash; B3/B4
Hence, option c is correct.

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M Question 1	⏱ 0
8 Books, B1, B2, B3, B4, B5, B6, B7 and B8 are in two rows 4 in each facing North and South. B5 is between B1 and B8 but just opposite to B2. B6 is at one end of a line and is just next to the right of B2 or either B6 book is just after B2 book. B7 book which at one end of a line, is just diagonally opposite to B1 book. Which book is just opposite to B7 book? (a) B3 (b) B4 (c) B3 or B4 (d) Data is inadequate