In this problem, we want you to say whether the two formulas are equivalent. Justify your answer: if the

two formulas are equivalent, draw the truth table demonstrating this $($you must draw the entire truth table

for full credit$).$ If the two formulas are not equivalent, you can show a full truth table, or just give a row of

the truth table that demonstrates the formulae are not equivalent.

For each subproblem, draw a box around your answer and label which subproblem it is for.

$($a$)$ not$(a^{{?}^{?}}b)vvc$ versus notbvv$(notavvc)(10$ points$)$

$($b$)$ notavvnotb versus not$(not{b}^{{?}^{?}}a)(5$ points$)$

$($c$)$ avvb versus not$(not{a}^{{?}^{?}}$notb$)(5$ points$)$