GATE | GATE-CS-2002 | Question 34

The number of leaf nodes in a rooted tree of n nodes, with each node having 0 or 3 children is:
(A) n/2
(B) (n – 1)/3
(C) (n – 1)/2
(D) (2n + 1)/3

Answer: (D)
Explanation: See https://www.geeksforgeeks.org/data-structures-binary-trees-question-17/amp/
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