CBSE NET December 2010 PAPER II
Q. A binary tree with 27 nodes has _______ null branches.
(A) 54
(B) 27
(C) 26
(D) None of the above
Ans :- (D)
Explanation:-
A binary tree with n nodes has n+1 null branches. So a binary tree with 27 nodes will have 28 null branches.