5 years ago in Data Structure

The number of binary trees with 3 nodes which when traversed in post order gives the sequence A,B,C is ?

[A] 3
[B] 9
[C] 7
[D] 5
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Attempted 324
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Incorrect 112
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Rupendrasingh Krishna - 3 years ago

(2n)!/(n+1)!*n! so n=3 we get 5 answer is d

Serkie Mekonnen
Serkie Mekonnen - 1 week ago

Serkie Mekonnen from Dessie, Ethiopia is saying 5 is correct answer

Narender Kumar
Narender Kumar - 2 weeks ago

Narender Kumar is saying 9 is correct answer

Marem Husen
Marem Husen - 1 month ago

Marem Husen from Al Musayyib, Iraq is saying 9 is correct answer

deepak kumar
deepak kumar - 1 month ago

deepak kumar is saying 7 is correct answer

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Which of the following statement is true ?

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  • [D] Depth first search can be used to find connected components of a graph.

Merge sort uses ?

  • [A] Divide and conquer strategy
  • [B] Backtracking approach
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