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    Question

    Who was to the immediate left of K in the initial

    arrangement? Six friends J, K, L, M, N and O were seated in a row facing the north. The seats were numbered 1-6 from left to right. Each of them rolled a dice only once which had the numbers 1-6. They rolled the dice in alphabetical order. After each roll, there were some movements based on certain rules. Their final position was based on the following points: The one who rolled 1 was seated 2nd from one of the either ends. The movements were based on the following points The one who rolled 1 Swapped places with the one who rolled 5 The one who rolled 2 Swapped places with the one to his immediate left, if not possible, swapped positions with the person to his immediate right The one who rolled 3 Swapped position with the person to his immediate right, if not possible then swapped positions with the person to his immediate left. K was 2nd to the left of O who rolled Z. L rolled 2 more than that rolled by J.  Only K's seat number was same as that the number he rolled. L was 4th to the right of M The person who rolled 5 was seated at the extreme left .The one who rolled 4: Remained at his position. The one who rolled 5: swapped position with L, if L rolled 5 then swapped position with K. The one who rolled 6: swapped places with the one who rolled 2. The final arrangement was reached after all the above movements were made.
    A M Correct Answer Incorrect Answer
    B L Correct Answer Incorrect Answer
    C N Correct Answer Incorrect Answer
    D O Correct Answer Incorrect Answer
    E J Correct Answer Incorrect Answer

    Solution

    The person who rolled 5 was seated at the extreme left. The one who rolled 1 was seated 2nd from one of the either ends. The dice was rolled one by one in the alphabetical order i.e. J-O. If we need to reach the initial arrangement, then we need to move backwards i.e. from O-J. Also any movement made in the left when in forward (J-O) should be taken in the right when traced in the backward direction (O-J) O rolled 6: The one who rolled 6: swapped places with the one who rolled 2 M rolled 1: Swapped places with the one who rolled 5 thus, with N, L rolled 4: Remained at his position J rolled 2: Swapped places with the one to his immediate left, if not possible, swapped positions with the person to his immediate right. As the movement is being traced backwards, J must have swapped positions with the one to his immediate right. Thus, the initial position was as follows:

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