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MLF · Quiz 1 · 26 Oct 2025 (Afternoon)

18 questions · 40 marks · 60 min

Answer key Take as mock

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Machine Learning Foundations

Quiz 1 · 26 Oct 2025 (Afternoon)

Official Paper

Examination Instructions & Guidelines

Solve on notebook/paper first before checking solutions.
MCQ: Exactly 1 option is correct. Negative marking applies.
MSQ: One or more options correct. Select all to score.
NAT: Numerical response. No negative marking.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

Q1MCQ1 Mark·Choose one option
Key ↓
A bank wants to decide whether a loan applicant should be given a loan or not, based on features like income, credit score and past records. Which of the following machine learning techniques is applicable for this scenario?
1. ARegression
2. BClassification
3. CClustering
4. DDimensionality Reduction
Q2MCQ3 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q3MSQ2 Marks·Choose all correct options
Key ↓
1. A
2. B
3. C
4. D
Q4NAT3 Marks·Write the number
Key ↓
Your answer:
Q5NAT3 Marks·Write the number
Key ↓
Your answer:
Q6NAT2 Marks·Write the number
Key ↓
Your answer:
Read the passage below, then answer Q7–Q8
Based on the above data, answer the given subquestions.
Q7MCQ3 Marks·Choose one option
Key ↓
Which of these models has the smallest squared loss on this training dataset?
1. A
2. B
3. C
4. D
Q8MCQ2 Marks·Choose one option
Key ↓
1. ANo
2. BYes
3. CInsufficient information to answer the question
Read the passage below, then answer Q9–Q10
Based on the above data, answer the given subquestions.
Q9MCQ3 Marks·Choose one option
Key ↓
Which of the following sets forms a basis for the row space of A?
1. A{(1, 0, 2), (0, 1,−1)}
2. B{(1, 0, 2), (0, 1,−1), (0, 0,−1)}
3. C{(1, 0, 2), (0,−1, 1), (0,−1,−4)}
4. D{(0, 1,−1), (0, 0,−4)}
Q10MCQ2 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Read the passage below, then answer Q11–Q12
Based on the above data, answer the given subquestions.
Q11MSQ2 Marks·Choose all correct options
Key ↓
Which of the following is/are true?
1. AA is an orthogonal matrix
2. BA is invertible
3. CA is symmetric
Q12MCQ3 Marks·Choose one option
Key ↓
Which of the following is true?
1. AA does not have real eigenvalues
2. BA has two distinct real eigenvalues
3. CA has two real eigenvalues, not necessarily distinct
Read the passage below, then answer Q13–Q15
There is no common data for this question. There are three independent sub-questions for which you have to answer True/False.
Q13MCQ2 Marks·Choose one option
Key ↓
If a square matrix A is diagonalizable, then A is invertible.
1. ATrue
2. BFalse
Q14MCQ1 Mark·Choose one option
Key ↓
The eigenvalues of a real symmetric matrix are real.
1. ATrue
2. BFalse
Q15MCQ2 Marks·Choose one option
Key ↓
A square matrix A of shape n x n is diagonalizable if and only if it has n distinct eigenvalues.
1. ATrue
2. BFalse
Read the passage below, then answer Q16–Q18
Based on the above data, answer the given subquestions.
Q16MCQ2 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q17NAT2 Marks·Write the number
Key ↓
Your answer:
Q18MCQ2 Marks·Choose one option
Key ↓
1. A(A)
2. B(B)

Official Key

Master Answer Key & Explanations

Official answer keys from IIT Madras BS past papers. Click any question to review.

Reveal Key

Q1B

Q2A

Q3B, C, D

Q472

Q51024

Q60

Q7A

Q8A

Q9B

Q10C

Q11A, B

Q12A

Q13B

Q14A

Q15B

Q16A

Q171

Q18A

Questions and answer keys are reproduced from the official IIT Madras BS papers. BTechi is not affiliated with IIT Madras.