Chapter 3 Flashcards
T/F
Information that is stored and manipulated by computers is called data.
True
T/F
Since floating-point numbers are extremely accurate, they should generally be used instead of ints.
False
T/f
Operations like addition and subtraction are defined in the math library.
False
TF
The number of possible arrangements of n items is equal to n!.
True
TF
The sqrt function computes the squirt of a number.
False
TF
The float data type is identical to the mathematical concept of a real number.
True
TF
Computers represent numbers using base-2 (binary) representation.
True
TF
A hardware float can represent a larger range of values than a hardware int.
True
TF
Type conversion functions such as float are a safe alternative to eval for getting a number as user input.
False
TF
In Python, 4 + 5 produces the same result type as 4.0 + 5.0.
False
Which of the following is not a built-in Python data type?
Rational
Which of the following is not a built-in operation?
sqrt
In order to use functions in the math library, a program must include
An import statement
The value of 4! Is
24
The most appropriate data type for storing the value of pi is
Float
The number of distinct values that can be represented using 5 bits is
32
In a mixed-type expression involving ints and floats, Python will convert
Ints to floats
Which of the following is not a Python type-conversion function?
abs
The pattern used to compute factorials is
accumulator
In modern Python, an int value that grows larger than the underlying hardware int
Causes an overflow
