Which of the following statements can be used to validate whether the value a user entered for a grade is in the range 0 to 100, including both 0 and 100?

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BlackTom AI · Accepted Answer

To validate a grade within the inclusive range 0 to 100, we must consider how each conditional expresses the allowed values. Option 1: 'if grade > 0 and grade < 100 :' This condition uses strict inequality, so it excludes 0 and 100 themselves. Therefore, a grade of 0 or 100 would not pass this test, which means this option does not validate the full inclusive range. Option 2: 'if grade >= 0 and grade <= 100 :' Here, the comparison operators include the endpoints 0 and 100. The expression checks that grade is greater than or equal to 0 AND less than or equal to 100, which exactly captures the inclusive range 0 to 100. Option 3: 'if grade <= 0 and grade >= 100 :' This is logically impossible for any real number, because no value can be simultaneously <= 0 and >= 100. As a result, this condition can never be true and does not validate the range at all. Option 4: 'if grade <=0 or grade >=100 :' This uses OR, so any value that is <= 0 or >= 100 would pass. That includes negative numbers and numbers greater than 100, which are outside the desired range, so this option is incorrect for validating the 0 to 100 interval inclusively.

Fal25_CS003C_74229 Ch. 3 Pre-Quiz (Remotely Proctored)

Which of the following statements can be used to validate whether the value a user entered for a grade is in the range 0 to 100, including both 0 and 100?

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