$8$:$11$

$699$ pts

$300$

Question $8$ of $13$

$($a$){\displaystyle \underset{i=3}{\overset{7}{}}}sin(i\frac{}{2})=$

$($b$){\displaystyle \underset{k=4}{\overset{7}{}}}\frac{1}{k-1}=$

$($c$){\displaystyle \underset{j=0}{\overset{3}{}}}{6}^j=$