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Maths for GenAI · Transformers, attention & decoding

8 questions · 40 marks · 2 papers

Answer key

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Mathematical Foundations of Generative AI

Transformers, attention & decoding

Official Paper

Examination Instructions & Guidelines

Solve on notebook/paper first before checking solutions.
MCQ: Exactly 1 option is correct. Negative marking applies.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

End Term · 31 Aug 2025 (FN)End Term

Q1MCQ5 Marks·Choose one option
Asked 2 times Key ↓
1. A0.6
2. B0.5
3. C0.67
4. D0.75
Q2MCQ5 Marks·Choose one option
Key ↓
1. A≈ 1.670
2. B1.500
3. C2.000
4. D≈ 1.333
Q3MCQ5 Marks·Choose one option
Asked 2 times Key ↓
1. A768 × 768 = 589,824
2. B768 × 64 = 49,152
3. C64 × 64 = 4,096
4. D12 × 64 = 768
Q4MCQ5 Marks·Choose one option
Key ↓
1. A(3,−1)
2. B(2, 0)
3. C(1,−1)
4. D(0, 0)

End Term · 31 Aug 2025 (AN)End Term

Q5MCQ5 Marks·Choose one option
Asked 2 times Key ↓
1. ASize = 4, prob ≈ 0.105
2. BSize = 3, prob = 0
3. CSize = 5, prob = 0.1
4. DSize = 4, prob = 0.1
Q6MCQ5 Marks·Choose one option
Asked 2 times Key ↓
1. A1,048,576 params
2. B786,432 params
3. C524,288 params
4. D262,144 params
Q7MCQ5 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q8MCQ5 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D

Official Key

Master Answer Key & Explanations

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

Reveal Key

Q1A

Q2A

Q3A

Q4A

Q5A

Q6A

Q7A

Q8A

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