Computational Thinking and Programming-I Quiz 3

✅ Answer: (c) Integer

Integer is a numeric data type in Python, used to represent whole numbers. String, List, and Dictionary all hold non-numeric or mixed data.

✅ Answer: (b) Floating point

3.14 has a decimal point, which makes it a floating point number in Python — confirmed by type(3.14) returning <class 'float'>.

✅ Answer: (c) Tuple

A tuple is an ordered sequence of elements, just like lists and strings. None, Dictionary, and Boolean are not sequence types.

✅ Answer: (c) Mutable

Mutable data types (like lists, dictionaries, and sets) allow their contents to be changed after creation — elements can be added, removed, or updated in place.

✅ Answer: (d) Immutable

Immutable data types (like tuples and strings) cannot be changed once created — any “modification” actually creates a brand-new object instead.

✅ Answer: (a) True

5 is indeed greater than 3, so this comparison evaluates to the boolean True.

✅ Answer: (c) String

A string represents text — either a single character or a whole sequence of characters, enclosed in quotes.

✅ Answer: (a) Integer

type(42) returns <class 'int'>, meaning 42 is an Integer.

✅ Answer: (c) List

Square brackets [ ] define a list in Python, so type([1, 2, 3]) returns <class 'list'> — List.

✅ Answer: (d) Dictionary

A dictionary stores data as key-value pairs, letting you look up a value quickly using its associated key — e.g. {"name": "Riya"}.

✅ Answer: (d) NoneType

None is a special built-in value representing “nothing” or “no value”, and its type is its own unique class: NoneType.

✅ Answer: (c) Dictionary

A dictionary is Python’s built-in mapping type — an unordered (prior to Python 3.7, and insertion-ordered since) collection of key-value pairs.

✅ Answer: (b) Dictionary

A dictionary is mutable — you can add, remove, or update key-value pairs after it’s created. Tuples, strings, and integers are all immutable.

✅ Answer: (c) Complex

The j suffix marks the imaginary part of a number in Python, making 3 + 4j a Complex number — confirmed by type(3 + 4j) returning <class 'complex'>.

✅ Answer: (c) True

True (without quotes) is the real boolean literal in Python. "True" is just a string that happens to say True, while 1 and 0 are integers — even though Python treats them as “truthy” and “falsy” in conditions, their actual type is int, not bool.

✅ Answer: (c) String

Text enclosed in quotes is always a string in Python, so type("Hello") returns <class 'str'> — String.

✅ Answer: (b) Tuple

Round brackets ( ) with comma-separated values define a tuple, so type((1, 2, 3)) returns <class 'tuple'> — Tuple.

✅ Answer: (b) int()

int() is the built-in function used to convert a compatible value (like a numeric string or a float) into an integer — for example, int("5") gives 5.

✅ Answer: (d) Tuple

A tuple is immutable — trying to change an element (e.g. t[0] = 5) raises a TypeError. List, dictionary, and set are all mutable and can be changed after creation.

✅ Answer: (b) Boolean

type(True) returns <class 'bool'> — Boolean. (Interesting fact: bool is technically a subclass of int in Python, which is why True == 1 evaluates to True — but type() still correctly reports it as bool.)