Complete GATE CSE 2025 Paper 2 overview, original pages and practice · Timed previous-paper practice

Questions 13–15 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 5 of 22

Question 13

Open question
CSMCQ1 markNeeds review
Consider a binary tree

in which every node has either zero or two children. Let

be the number of nodes in

. Which ONE of the following is the number of nodes in

that have exactly two children?
Your answerChoose one option.

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Question 14

Open question
CSMCQ1 markNeeds review
Let

,

, and

be non-singular matrices of order 3 satisfying the equations

,

and

. Which ONE of the following is the value of the determinant of

?
Your answerChoose one option.

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Question 15

Open question
CSMCQ1 markNeeds review
Let

be an arbitrary predicate over the domain of natural numbers. Which ONE of the following statements is TRUE?
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