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ISRO | ISRO CS 2017 | Question 54
  • Last Updated : 11 Sep, 2019
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A strictly binary tree with 10 leaves
(A) cannot have more than 19 nodes
(B) has exactly 19 nodes
(C) has exactly 17 nodes
(D) has exactly 20 nodes

Answer: (B)

Explanation: A strict binary tree with ‘n’ leaf nodes always have ‘2n-1’ intermediate nodes. With 10 leaf nodes a strict binary tree will have exactly 19 nodes.

So, option (B) is correct.

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