1.

Which expression gives maximum number of nodes at level I of a binary tree ( the root is at level 1)

Answer»

"2^1 – 1 expression GIVES the maximum number of nodes at the level I of a binary TREE. SOMETIMES another expression is also used but it is used for the level 2 – 2^2 – 1

The main concept is 2^N- 1 where n is the total number of level. If we are at 1 then it will be 1 and for 2 it will be 2 and so on.

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