Logical Operators: AND, OR, NOT Quiz Quiz

Sharpen your understanding of logical operators with this interactive quiz focused on AND, OR, and NOT. Assess your ability to analyze compound logic, operator precedence, and truth tables—essential skills for anyone working with programming or boolean logic.

1. Identifying Output with AND

   Given the statement 'True AND False', what will be the result?

   1. Undefined
   2. Null
   3. True
   4. False

   Explanation: AND only returns True if both operands are True, so 'True AND False' evaluates to False. 'True' would be correct if both sides were True. 'Null' and 'Undefined' are unrelated to boolean logic operators and are not possible resulting values for this operation.

2. Combining OR and NOT

   If x = False, what does the expression 'NOT (x OR True)' evaluate to?

   1. None of the above
   2. True
   3. Error
   4. False

   Explanation: Inside the parentheses, x OR True is always True no matter x's value, since 'OR' returns True if either side is True. Applying NOT to True makes it False. 'True' is incorrect because it does not consider the NOT operator. 'Error' and 'None of the above' do not apply to standard logical evaluation.

3. Operator Precedence Awareness

   In the expression 'True OR False AND False', which result is correct based on standard operator precedence?

   1. True
   2. OR
   3. False
   4. AND

   Explanation: AND has higher precedence than OR, so 'False AND False' is evaluated first (yielding False), then 'True OR False' becomes True. 'False' would be correct if the operators had equal precedence. 'AND' and 'OR' are names of operators, not results.

4. Truth Table Insight

   Which statement about the truth table for 'A OR (NOT A)' is correct?

   1. False only if A is False
   2. Always False
   3. True only if A is True
   4. Always True

   Explanation: 'A OR (NOT A)' is always True because either A is True or NOT A is True (if A is False). 'Always False' can't be correct since one side will always be True. 'True only if A is True' and 'False only if A is False' misunderstand the presence of the NOT A part.

5. Complex Logic Application

   Given variables a = True and b = False, what is the result of 'NOT a AND b'?

   1. True
   2. a
   3. False
   4. b

   Explanation: NOT a means False, and False AND b (which is False) gives a final result of False. 'True' is incorrect because NOT a flips True to False. 'a' and 'b' are values, not results; the evaluation process uses their underlying boolean values.