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UGC-NET | UGC NET CS 2016 July – III | Question 74

  • Last Updated : 27 Apr, 2018

Consider a 3-puzzle where, like in the usual 8-puzzle game, a tile can only move to an adjacent empty space. Given the initial state
62 (1)
, which of the following state cannot be reached?
(A) (1)
(B) (2)
(C) (3)
(D) (4)

Answer: (C)

Explanation: 62 (2)
Option (C) is not reachable.
So, option (C) is correct.

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