Evaluating Mathematical, Relational, and Logical Expressions
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Evaluating Mathematical, Relational, and Logical Expressions

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Questions and Answers

What is the purpose of program files?

  • Store the data required to execute the program
  • Contain the data connectors within expressions
  • Contain the instructions to tell the computer what to do (correct)
  • Process the data during computations

    • In the expression 8 - 3, which of the following is the operator?

  • +
  • - (correct)
  • /
  • *

    • What is the purpose of logical operators?

  • Connect and process data
  • Determine an order of operations
  • Process mathematical data
  • Tell the computer what type of processing needs to be done (correct)

    • What is a resultant in an expression?

    <p>The answer that results when the operation is completed</p> Signup and view all the answers

    What are operands in an expression?

    <p>Constants or variables that are processed by operators</p> Signup and view all the answers

    Which of the following is an example of a numeric data type?

    <p>5,297</p> Signup and view all the answers

    What type of data includes whole numbers only?

    <p>Integers</p> Signup and view all the answers

    Which data type is required for numeric calculations?

    <p>Real numbers</p> Signup and view all the answers

    Which of the following is an example of character data?

    <p>'A'</p> Signup and view all the answers

    What is the most common data type among numeric, character, and logical data?

    <p>Numeric data</p> Signup and view all the answers

    What is the main characteristic of real numbers?

    <p>They include whole numbers and decimal parts</p> Signup and view all the answers

    In character data, what do single digit numbers, letters, and special characters form?

    <p>String Data</p> Signup and view all the answers

    What differentiates an upper case letter from a lower case letter in character data?

    <p>The computer treats them as different characters</p> Signup and view all the answers

    Which values are included in logical data?

    <p>True and False</p> Signup and view all the answers

    What is a rule regarding data type mixing in programming?

    <p>Data types cannot be mixed</p> Signup and view all the answers

    What is the correct data type for the words True and False?

    <p>Logical data type</p> Signup and view all the answers

    Which set of numbers does the character data type use?

    <p>All available characters</p> Signup and view all the answers

    What happens if a user enters a value into a variable location that is not designated as numeric data type for calculations?

    <p>The computer will return an error message</p> Signup and view all the answers

    How does the computer store data internally in memory locations?

    <p>Each memory location holds one value at a time</p> Signup and view all the answers

    Where are data, information, or programs kept for future use if they need to be stored externally?

    <p>External storage medium like a hard disk drive</p> Signup and view all the answers

    What is a constant in programming?

    <p>An alphabetical and/or numeric value that never changes during processing</p> Signup and view all the answers

    Which of the following is a rule for naming variables?

    <p>All variable names must start with a letter of the alphabet or an underscore</p> Signup and view all the answers

    In programming, what is the purpose of logical data?

    <p>To handle operations based on true or false conditions</p> Signup and view all the answers

    Which term is often used interchangeably with 'identifier' in programming languages?

    <p>Variable</p> Signup and view all the answers

    What type of data can constants represent in programming?

    <p>Any type of data—numeric, alphabetical, or special symbols</p> Signup and view all the answers

    When evaluating a mathematical expression, what does the programmer use?

    <p>Integers and real numbers</p> Signup and view all the answers

    Which type of expression involves relational operators?

    <p>Logical expressions</p> Signup and view all the answers

    In evaluating a relational expression, what kind of values are utilized by the programmer?

    <p>Integers and real numbers</p> Signup and view all the answers

    What type of expression involves both relational and logical operators?

    <p>Logical expressions</p> Signup and view all the answers

    When dealing with character data, what type of expressions does a programmer typically write?

    <p><strong>Character expressions</strong></p> Signup and view all the answers

    What operator is used to store the result of an expression in a memory location?

    <p>=</p> Signup and view all the answers

    Which of the following is essential in a mathematical equation for computer use?

    <p>All variables, constants, and operators on the same line</p> Signup and view all the answers

    When setting up a relational expression, what is its primary purpose?

    <p>Make decisions based on conditions</p> Signup and view all the answers

    Which of the following is an incorrect requirement when setting up a numeric expression for computer use?

    <p>All variables, constants, and operators on different lines</p> Signup and view all the answers

    In a computer expression, what does the equal (=) sign represent?

    <p>Result storage operation</p> Signup and view all the answers

    When modifying a mathematical expression for computer use, what must be ensured about variables and constants?

    <p>They should be on the same line</p> Signup and view all the answers

    What is the purpose of a relational expression in programming?

    <p>Make decisions based on conditions</p> Signup and view all the answers

    When designing a numeric expression for a computer, what is the role of operators?

    <p>Link variables and constants</p> Signup and view all the answers

    What is the significance of having all elements on the same line in a computer expression?

    <p>Reduces computational errors</p> Signup and view all the answers

    In a mathematical equation used for computer processing, what does the equal (=) sign signify?

    <p>Result storage operation</p> Signup and view all the answers

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