Chapter 3

Question 1

T/F

Information that is stored and manipulated by computers is called data.

Answer 1

True

Question 2

T/F

Since floating-point numbers are extremely accurate, they should generally be used instead of ints.

Answer 2

False

Question 3

T/f

Operations like addition and subtraction are defined in the math library.

Answer 3

False

Question 4

TF

The number of possible arrangements of n items is equal to n!.

Answer 4

True

Question 5

TF

The sqrt function computes the squirt of a number.

Answer 5

False

Question 6

TF

The float data type is identical to the mathematical concept of a real number.

Answer 6

True

Question 7

TF

Computers represent numbers using base-2 (binary) representation.

Answer 7

True

Question 8

TF

A hardware float can represent a larger range of values than a hardware int.

Answer 8

True

Question 9

TF

Type conversion functions such as float are a safe alternative to eval for getting a number as user input.

Answer 9

False

Question 10

TF

In Python, 4 + 5 produces the same result type as 4.0 + 5.0.

Answer 10

False

Question 11

Which of the following is not a built-in Python data type?

Answer 11

Rational

Question 12

Which of the following is not a built-in operation?

Answer 12

sqrt

Question 13

In order to use functions in the math library, a program must include

Answer 13

An import statement

Question 14

The value of 4! Is

Answer 14

24

Question 15

The most appropriate data type for storing the value of pi is

Answer 15

Float

Question 16

The number of distinct values that can be represented using 5 bits is

Answer 16

32

Question 17

In a mixed-type expression involving ints and floats, Python will convert

Answer 17

Ints to floats

Question 18

Which of the following is not a Python type-conversion function?

Answer 18

abs

Question 19

The pattern used to compute factorials is

Answer 19

accumulator

Question 20

In modern Python, an int value that grows larger than the underlying hardware int

Answer 20

Causes an overflow