Six friends — L, M, N, O, Y, and Z — are sitting in a straight line. Y and Z are sitting in the middle two seats. L and M are sitting at the two ends. N is sitting immediately to the left of L.

Who is sitting to the right of M?

(a) O

(b) Y

(c) Z

(d) N

Question

Six friends &mdash; L, M, N, O, Y, and Z &mdash; are sitting in a straight line. Y and Z are sitting in the middle two seats. L and M are sitting at the two ends. N is sitting immediately to the left of L.

Who is sitting to the right of M?

(a) O

(b) Y

(c) Z

(d) N

ONLiNE UPSC · Accepted Answer

Given:

Total 6 people: L, M, N, O, Y, Z

Y and Z are in the middle two positions &rarr; Positions 3 and 4

L and M are at the ends &rarr; Positions 1 and 6 (in some order)

N is immediately to the left of L

Now try possible placements:

Assume L is at position 1 &rarr; then N would have to be at position 0 &rarr; Not possible.
So L must be at position 6 &rarr; then N is at position 5

Now only M and O are left. M is at an end &rarr; so M must be at position 1 &rarr; then O goes at position 2.

Final arrangement:
M O Y Z N L

Hence, option a is correct.

Seating Arrangement

Linear Arrangement

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