Question 1

The not operator has a lower precedence than the and and or operators.

Accepted Answer

The not operator has a higher precedence than the and and or operators in Python.

Question 2

The comparison operators are applied after addition but before assignment.

Accepted Answer

The comparison operators have higher precedence than the assignment operator, but lower precedence than the addition operator. Therefore, additions are performed before comparisons and before assignments.

Question 3

Conditional iteration requires that a condition be tested within the loop to determine whether the loop should continue.

Accepted Answer

Conditional iteration allows for the loop to continue based on the outcome of a condition being tested within the loop.

Question 4

"A"

Accepted Answer

The statement "A" is not a complete statement or question, so it cannot be evaluated as true or false.

Question 5

The augmented assignment operations have a higher precedence than the standard assignment operation.

Accepted Answer

The standard assignment operation "=" has a lower precedence than the augmented assignment operations like "+=", "-=", "*=", etc., meaning the augmented assignments are evaluated first in expressions involving both types of assignments.

Question 6

When the step argument is a negative number, the range function generates a sequence of numbers from the first argument down to the second argument plus 1.

Accepted Answer

When the step argument is negative, the range function generates a sequence of numbers in reverse order from the first argument down to the second argument plus 1.

Question 7

A condition expresses a hypothesis about the state of its world at that point in time.

Accepted Answer

A condition is a statement about the state of the world at a specific point in time, usually expressed using logical operators such as "if", "and", or "or". It is often used in programming and decision-making to determine what actions to take based on certain criteria being met.

Question 8

There are two types of loops-those that repeat an action a predefined number of times (definite iteration) and those that perform the action until the program determines that it needs to stop (indefinite iteration).

Accepted Answer

This statement accurately describes the two types of loops in programming.

Question 9

For the most part, off-by-one errors result when the programmer incorrectly specifies the lower bound of the loop.

Accepted Answer

Off-by-one errors typically occur when the programmer incorrectly specifies the upper bound of a loop, leading to iterations that are one too many or one too few.

Question 10

The or operator returns True if and only if both of its operands are true, and returns False otherwise.

Accepted Answer

The statement is incorrect. The or operator returns True if at least one of its operands is true, and only returns False if both operands are false.

Question 11

Loop statements allow a computer to make choices.

Accepted Answer

Loop statements are used to repeat a block of code multiple times, not to make choices. Conditional statements (like if-else) are used for making choices.

Question 12

Simple Boolean expressions consist of the Boolean values True or False, variables bound to those values, function calls that return Boolean values, or comparisons.

Accepted Answer

This statement is true. Simple Boolean expressions can only have a combination of True/False values, variables, function calls, and comparisons.

Question 13

The assignment symbol can be combined with the arithmetic and concatenation operators to provide augmented assignment operations.

Accepted Answer

The augmented assignment operations combine the assignment operator with arithmetic or concatenation operators, such as += or *=, to update a variable's value in-place.

Question 14

The statements in the loop body need not be indented and aligned in the same column.

Accepted Answer

In most programming languages, especially those using a block structure like Python, the statements in the loop body must be indented and aligned in the same column to indicate that they are part of the loop.

Question 15

4 != 4 evaluates to True.

Accepted Answer

The expression 4!=4 is comparing if 4 is NOT equal to 4, which is false, so the overall expression evaluates to false.

Question 16

The if-else statement is the most common type of selection statement.

Accepted Answer

The if-else statement is indeed the most common type of selection statement in programming.

Question 17

The not operator expects a single operand and returns its logical negation, True, if it's false, and False if it's true.

Accepted Answer

The not operator indeed expects a single operand and returns its logical negation, True if it's false, and False if it's true.

Question 18

The simplest form of selection is the if-else statement.

Accepted Answer

The answer of The simplest form of selection is the...

Question 19

The Boolean data type is named for the twentieth-century British mathematician George Boole.

Accepted Answer

The Boolean data type is named after George Boole, a nineteenth-century British mathematician, not twentieth-century.

Question 20

In Python, = means equals, whereas == means assignment.

Accepted Answer

The statement is incorrect. In Python, = means assignment and == means equality comparison.

Quiz 3: Loops and Selection Statements