Evalúa la expresión indicada \( \log _{2} 8^{33} \) Seleccione una: a. 99 b. 2 c. 33 d. 3

\( \left(\log _{9} 4\right) \cdot\left(\log _{4} 5\right) \cdot\left(\log _{5} 6\right) \cdot\left(\log _{6} 7\right) \cdot\left(\log _{5} 8\right) \cdot\left(\log _{5} 9\right)= \) (A) 4

Write \( 68 \% \) as a fraction in simplest form

\( \begin{array}{llll}i^{30}+i^{40}+i^{60}= & \text { B. } 1 & \text { C. }-i & \text { D. } i\end{array} \)

Simplify: \( \frac{(6.25)^{\frac{1}{2}} \times(0.0144)^{\frac{1}{2}}+1}{(0.027)^{\frac{1}{3}} \times(81)^{\frac{1}{4}}} \)

7. \( 3 \sqrt{2}+4 \sqrt{8}-5 \sqrt{50}+8 \sqrt{32} \)