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GATE Computer Science (CS) 2021 Shift 2 Solved Paper

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Question : 26

Total: 65

Consider a complete binary tree with 7 nodes. Let A denote the set of first 3 elements obtained by performing Breadth-First Search (BFS) starting from the root. Let B denote the set of first 3 elements obtained by performing Depth-First Search (DFS) starting from the root.
The value of |A - B| is _______

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