Programming and Data Structures · Trees

Official IIT answer key · IISc Bangalore · Audited Aug 2026

GATE CSE 2016 Set 2 Q11 · NAT · 1 mark

Breadth First Search (BFS) is started on a binary tree beginning from the root vertex. There is a vertex $t$ at a distance four from the root. If $t$ is the $n$ -th vertex in this BFS traversal, then the maximum possible value of $n$ is _________.

Numerical answer

Enter a value to check

Key concept

Trees

Step-by-step verified solution

Examiner trap & misconception

Topic notes

How GATE tests Trees

In GATE CS, the 'Trees' topic tests structural counting relations in binary trees, tree traversal techniques (standard, custom, and multi-way tree traversals), tree reconstruction from sequences, expression tree evaluations, and recursive algorithms over binary/multi-way tree representations. Questions are heavily weighted towards 1-mark foundational items (both MCQ and NAT) with 2-mark questions focusing on code analysis or expression optimization.

Full Trees guide →

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All 13 questions on Trees →

Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.

Programming and Data Structures · Trees

Official IIT answer key · IISc Bangalore · Audited Aug 2026

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GATE CSE 2016 Set 2 Q11 · NAT · 1 mark

Breadth First Search (BFS) is started on a binary tree beginning from the root vertex. There is a vertex $t$ at a distance four from the root. If $t$ is the $n$ -th vertex in this BFS traversal, then the maximum possible value of $n$ is _________.

Numerical answer

Enter a value to check

Key concept

Trees

Step-by-step verified solution

Examiner trap & misconception

Topic notes

How GATE tests Trees

Full Trees guide →

More on Trees

All 13 questions on Trees →

Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.

Breadth First Search (BFS) is started on a binary tree beginning from the root vertex. There is a vertex $t$ at a distance four from the root. If $t$ is the $n$ -th vertex in this BFS traversal, then the maximum possible value of $n$ is _________.

Step-by-step verified solution

Check you can still solve Trees under a clock

More from GATE CSE 2016 Set 2

More on Trees

Breadth First Search (BFS) is started on a binary tree beginning from the root vertex. There is a vertex $t$ at a distance four from the root. If $t$ is the $n$ -th vertex in this BFS traversal, then the maximum possible value of $n$ is _________.

Step-by-step verified solution

Check you can still solve Trees under a clock

More from GATE CSE 2016 Set 2

More on Trees

Breadth First Search (BFS) is started on a binary tree beginning from the root vertex. There is a vertex ttt at a distance four from the root. If ttt is the nnn-th vertex in this BFS traversal, then the maximum possible value of nnn is _________.

Step-by-step verified solution

Check you can still solve Trees under a clock

More from GATE CSE 2016 Set 2

More on Trees

Share this solution

Breadth First Search (BFS) is started on a binary tree beginning from the root vertex. There is a vertex ttt at a distance four from the root. If ttt is the nnn-th vertex in this BFS traversal, then the maximum possible value of nnn is _________.

Step-by-step verified solution

Check you can still solve Trees under a clock

More from GATE CSE 2016 Set 2

More on Trees

Share this solution

Breadth First Search (BFS) is started on a binary tree beginning from the root vertex. There is a vertex $t$ at a distance four from the root. If $t$ is the $n$ -th vertex in this BFS traversal, then the maximum possible value of $n$ is _________.

Breadth First Search (BFS) is started on a binary tree beginning from the root vertex. There is a vertex $t$ at a distance four from the root. If $t$ is the $n$ -th vertex in this BFS traversal, then the maximum possible value of $n$ is _________.