Boolean , what is the correct answer and why? : <p>Boolean or "truth-valued" expressions are how we express conditions that control choices and repetition in computer languages.  Consider the following Python Boolean expression, where variables beta and gamma are of type Boolean:</p>

<p>not (beta and gamma)</p>

<p>In any algebraic notation there are usually several different ways of writing the same expression.  For instance, in integer arithmetic the value of expression '4 x (5 + 2)' is numerically equivalent to that of expression '(4 x 5) + (4 x 2)'. </p>

<p>Which of the following Boolean expressions is logically equivalent to the one above?</p>

<p>Answers:<br>
beta or gamma</p>

<p><strong>(not beta) and (not gamma)</strong> </p>

<p>not (not beta) or gamma</p>

<p>(not beta) or (not gamma)</p>

<p>beta and (not gamma)</p>

<p><strong>(not beta) and (not gamma)</strong> Is the answer i chose however its incorrect, can someone explain to me the right answer for this is ? </p>
