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Balanced binary tree with n items allows the lookup of an item in ____ worst-case time.

(a) O(log n)

(b) O(nlog 2)

(c) O(n)

(d) O(1)

My enquiry is from Binary Trees in division Binary Trees of Data Structures & Algorithms I

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The correct answer is (a) O(log n)

Easiest explanation - Searching an item in balanced binary is fast and worst-case time complexity of the search is O(log n).

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