Suppose a binary tree has leaves l 1 , l 2 , , l M at depths d 1 , d 2 , , d M , respectively Prove that and determine when the equality is true

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Question: Suppose a binary tree has leaves l 1 , l 2 , . . . , l M at depths d 1 , d 2

Suppose a binary tree has leaves l₁, l₂, . . . , l_Mat depths d₁, d₂, . . . , d_M, respectively. Prove that and determine when the equality is true.

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