Question

1. Evaluate the following expressions if p = 8, 9 = 3, and the value of the variable found is False. Show your work. . q <= p . not (p == 4-5) . q != p % 5 . found or p > 5 and q == p + 5 2. Are you able to draw the truth tables for AND, OR, and NOT logical expressions? - Translate the following problem descriptions into Python. 3. If score is greater than or equal to 90, then grade is set to 'A'. 4. a) Assume the variables p, v, and r have been assigned some values we want to test. If the expression t/ (p - v) is greater than 10, then r is set to 0. If the result is not greater than 10, r is set to three times its initial value. b) Are the parentheses in the expression required? Why or why not? 5. Assume a variable named number has been assigned some value we want to test. If the expression number % 3 results in an answer of 0, print a message saying that number is evenly divisible by 3. If number % 5 results in an answer of 0, print a message saying that number is evenly divisible by 5. 6. Assume the variable pH is assigned to some value for a chemical solution. Translate the information in the following table into Python code: pH value Less than 7.0, but not lower than the minimum of 0.0 Exactly 7.0 More than 7.0, but not higher than the maximum of 14.0 Below the minimum or above the maximum Message to be printed "Acidic "Neutral "Basic" "Invalid pH" 7. Fill in the following portion of a test plan, showing two of the values that could be used to test your code from #7 above. Select values based on two different reasons. pH test value Reason for testing that value Expected result Actual result when run Do not fill this in Do not fill this in

Answer 1

These are Multiple Questions. Solving as per the HOMEWORKLIB RULES the first problem (Question number - 1). Please ask other questions seperately and refer to the page number 15 of the updated HOMEWORKLIB RULES of April/May 2020 and ask the questions accordingly and STAY HOME STAY SAFE.

First expression q <= p will result True as stated 3 is less than 8.
Second expression not( p == q - 5) will result True as q - 5 will be -2 and it is not equal to 8.
Third expression q != p % 5 will result False as p%5 that is 8%5 is 3 and q is also 3 so they are equal but since != operator is used the expression becomes false.
Fourth expression found or p > 5 and q == p + 5 will result False as q == p + 5 will be false because q is 3 and p+5 is 13 , p>5 will be true because p is 8. Now p > 5 and q == p + 5 will result True and False = False and found is False so False or False will be False.   

For the verification here is a snapshot of the expression executed in Python Idle:

Here are the Truth tables used for solving the above expressions:-

X	Y	X AND Y
FALSE	FALSE	FALSE
FALSE	TRUE	FALSE
TRUE	FALSE	FALSE
TRUE	TRUE	TRUE

X	Y	X OR Y
FALSE	FALSE	FALSE
FALSE	TRUE	TRUE
TRUE	FALSE	TRUE
TRUE	TRUE	TRUE

X	NOT X
FALSE	TRUE
TRUE	FALSE