30^10 / 210^5=?	Choose the most appropriate option.
A) 6^5 B) 5^6 C) (30/7)^5 D) 6^3 E) 15^3
30^10 / 210^5=?   A. 6^5   B. 5^6   C. (30/7)^5   D. 6^3   E. 15^3   -&gt; 30^10 / 210^5=(30^10)/(7^5)(30^5)=(30^5)/(7^5)=(30/7)^5.   Thus, (30/7)^5 is the answer.
<result>C</result>
30^10 / 210^5=?