Computational Thinking and Programming-I Quiz 4

✅ Answer: (c) +

+ is an arithmetic operator, used for addition (and string/list concatenation). and, not, and is are logical/identity operators, not arithmetic ones.

✅ Answer: (b) 3.333

The / operator always performs true (floating-point) division in Python 3, so 10 / 3 gives 3.333… — not a whole number, even though both operands are integers.

✅ Answer: (a) **

** is Python’s exponentiation operator — for example, 2 ** 3 gives 8 (2 raised to the power 3).

✅ Answer: (a) 2

// is the floor division operator — it divides and then rounds down to the nearest whole number, discarding the remainder. 8 ÷ 3 = 2.666…, floored to 2.

✅ Answer: (c) <

< (less than) is a relational (comparison) operator, used to compare two values. % is arithmetic, while and/or are logical operators.

✅ Answer: (a) True

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

✅ Answer: (c) ==

== (double equals) checks equality between two values. A single = is only for assignment, and != checks the opposite — inequality.

✅ Answer: (b) and

Both and and or combine multiple conditions, but and is the operator that specifically requires all combined conditions to be true (whereas or only needs one). Given the single-answer format, and is the standard textbook example for this concept.

✅ Answer: (b) False

and only returns True when both sides are true. Since one side is False here, the result is False.

✅ Answer: (a) =

A single = is the assignment operator, storing a value into a variable. == checks equality, and += is an augmented (combined) assignment operator.

✅ Answer: (a) 8

x += 3 is shorthand for x = x + 3. Starting from 5, this gives 5 + 3 = 8.

✅ Answer: (a) is

is is the identity operator — it checks whether two variables point to the exact same object in memory, not just whether their values are equal (that’s what == checks).

✅ Answer: (a) True

in checks membership — since 2 is present in the list [1, 2, 3], the expression evaluates to True.

✅ Answer: (a) not in

not in is the membership operator that checks for absence — it returns True if the value is not found in the collection.

✅ Answer: (a) True

is not checks that two objects are different. Since 3 and 4 are clearly not the same object, this evaluates to True.

✅ Answer: (b) 2

% is the modulus operator — it returns the remainder after division. 17 ÷ 5 = 3 remainder 2.

✅ Answer: (a) True

or returns True if at least one side is true. Since one side here is True, the whole expression is True.

✅ Answer: (b) False

not flips a boolean value — not True gives False.

✅ Answer: (c) 12

x *= 2 is shorthand for x = x * 2. Starting from 6, this gives 6 × 2 = 12.

✅ Answer: (c) True and False

a == b checks whether the values are equal — both lists contain [1, 2], so this is True. But a is b checks whether they’re the same object in memory — since they were created separately, this is False. This is a classic distinction tested in CBSE exams between equality and identity.