Question: 2 . Suppose a binary search tree with 7 keys has a height of 2 . ( a ) What is the expected number of

2. Suppose a binary search tree with 7 keys has a height of 2.
(a) What is the expected number of comparisons for a successful search? Assume that the height of the root-node is zero.
(b) What is the expected number of comparisons for an unsuccessful search? Assume that the height of the root-node is zero.

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