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Python · Tuples & sets

14 questions · 42 marks · 6 papers

Answer key

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Programming in Python

Tuples & sets

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.

Quiz 1 · 26 Oct 2025 (AN)Quiz 1

Useful Reference Data for this Paper
Useful Information
NAT → integer
For all NAT questions in this exam, the answer will always be an integer and not a float value. If the answer to a question is 18, then just enter that value. Do not enter 18.0
Q1MSQ4 Marks·Choose all correct options
Key ↓
Consider the following Python code: t = (5, [10, 20], (30, [40, 50],(30,))) Which of the following statements are valid? (Select all that apply)
1. At[1].append(25)
2. Bt[2] += (60,)
3. Ct[2][0] = 35
4. Dt[2][2].append(60)
5. Et[2][1][0] = 45
Q2NAT3 Marks·Write the number
Asked 5 times Key ↓
Consider the following Python code: P = {1, 2, 3, 4} Q = {3, 4, 5, 6} R = {4, 5, 6, 7} S = {2, 4, 6, 8} result = ((P | Q) - R) & S print(result) How many elements will be present in result?
Your answer:
Read the passage below, then answer Q3–Q4
Consider the following snippet of code and answer the given sub-questions: def analyze(data):
result = []
for item in data:
if isinstance(item, tuple):
total = 0
for x in item:
if x % 2 == 0:
total += x
result.append(total)
elif isinstance(item, int) and item % 2 == 1:
result.append(item * 3)
else:
continue
return result
sample = [(2, 5, 6), 7, (1, 3), 4, (8, 2, 1)]
output = analyze(sample)
Q3MCQ4 Marks·Choose one option
Key ↓
What is the value of _(output) after executing the given code?
1. A[8, 21, 0, 4, 10]
2. B[8, 21, 4, 2, 10]
3. C[8, 21, 0, 10]
4. D[8, 7, 0, 10]
Q4NAT4 Marks·Write the number
Key ↓
How many times is the inner _(for x in item:) loop executed in total when running analyze(sample) ?
Your answer:

End Term · 31 Aug 2025 (FN)End Term

Q5NAT3 Marks·Write the number
Asked 4 times Key ↓
Consider the following Python code: a1 = (3, 6, 9, 12, 15, 18, 21, 24) a2 = a1[2:7] a3 = a2[::-1] a4 = tuple(x for x in a3 if x % 6 != 0) a5 = a4[1::2] ans = sum(a5) + len(a4) print(ans) What is the output of the given code?
Your answer:

End Term · 31 Aug 2025 (AN)End Term

Q6MCQ3 Marks·Choose one option
Asked 4 times Key ↓
Given the following code snippet, what will be the output? a = (1, 2) b = (3, 4) c = ((5, 6),) d = a + b + c e = d[2:] f = d[:2] + (e[2],) print(f)
1. A(3, 4, (5, 6))
2. B(3, 4, 5, 6)
3. C(1, 2, (5, 6))
4. D(1, 2, 5, 6)
Q7MSQ3 Marks·Choose all correct options
Asked 4 times Key ↓
Consider the following snippet of code: t1 = (1, 2, 3) t2 = (4, 5, 6) t3 = t1 + t2 t4 = (t1, t2) print(t3[2:5]) print(len(t4)) print(5 in t2) try: t1[0] = 10 except: t1 = t3[0] print(t1) Select all that apply.
1. AThe First Line of output is _((3, 4, 5, 6))
2. BThe First Line of output is _((3, 4, 5))
3. CThe Second Line of output is _2
4. DThe Third Line of output is _(True)
5. EThe Fourth Line of output is _3
Read the passage below, then answer Q8–Q10
Consider the below python code.
def categorize_numbers(numbers):
categories = {
"cat_1": set(),
"cat_2": set(),
"cat_3": set()
}
def check(n):
if n % 5 == 0:
return True
return False
for num in numbers:
if num % 2 == 0:
categories["cat_1"].add(num)
else:
categories["cat_2"].add(num)
if check(num):
categories["cat_3"].add(num)
return categories
result = categorize_numbers([
2, 3, 4, 2, 5, 6, 3, 2, 7, 8,
9, 10, 5, 4, 7, 8, 3, 10, 2
])
Based on the given code snippet answer the given subquestions.
Q8MCQ2 Marks·Choose one option
Asked 5 times Key ↓
What will be the value of the following expression after running the given code snippet? sorted(result["cat_1"] & result["cat_3"])
1. A[10]
2. B[5]
3. C[2, 4, 5, 6, 8, 10]
4. D[5, 10]
Q9NAT2 Marks·Write the number
Asked 5 times Key ↓
What will be the value of the following expression after running the given code snippet? len(result["cat_1"] | result["cat_2"] | result["cat_3"])
Your answer:
Q10MSQ2 Marks·Choose all correct options
Asked 5 times Key ↓
If result = categorize_numbers([1, 2, 10, 15, 20]) , which of the following expression(s) would be evaluated as _(True) ?
1. Aresult == { 'cat_1': {2, 10, 20}, 'cat_2': {1, 15}, 'cat_3': {10, 20, 15} }
2. Blen(result["cat_1"] & result["cat_3"]) == 2
3. Clen(result["cat_1"] & result["cat_2"]) == 5
4. D(result["cat_1"] & result["cat_2"] | result["cat_3"]) == {10,20,15}

End Term · 13 Apr 2025 (FN)End Term

Q11MCQ3 Marks·Choose one option
Asked 2 times Key ↓
1. AOnly X
2. BOnly Y
3. COnly Z
4. DX and Z

End Term · 13 Apr 2025 (AN)End Term

Q12MCQ3 Marks·Choose one option
Asked 2 times Key ↓
1. AOnly A
2. BOnly B
3. COnly C
4. DA and C
Q13NAT3 Marks·Write the number
Asked 5 times Key ↓
Your answer:

End Term · 22 Dec 2024 (AN)End Term

Q14MSQ3 Marks·Choose all correct options
Asked 4 times 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, E

Q21

Q3C

Q48

Q518

Q6C

Q7B, C, D

Q8A

Q99

Q10A, B, D

Q11B

Q12D

Q1346

Q14A, B, C

Questions and answer keys are reproduced from the official IIT Madras BS papers. Topics and repeated question types are BTechi’s own grouping. BTechi is not affiliated with IIT Madras.