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Solutions

Red colour box placed at fourth position from bottom. There are two boxes are placed between Red colour box and Magenta colour box. Here, we have following cases.

Blue colour box is not placed at bottom. Three boxes are placed between White colour box and Blue colour box. White colour box is placed above of Blue colour box. Here, we have one more case.

Pink colour box is placed above of Grey colour box and below of Green colour box.

Not more than two boxes are placed between White colour box and Grey colour box. Here, Case-1(a) and Case-2 are eliminated.

Hence, Final solution is Case-1(b).
