6^9 - 6^2 is approximation of which of the following?  Choose the correct choice from the following answers:  A) 9^7  B) 9^8  C) 6^9  D) 9^11  E) 9^10
=&gt; Since 9^2 is a small number compared to 9^9, it can be disregarded. Thus, 6^9-6^2=6^9 is derived and the answer is 6^9.
<result>C</result>
6^9 - 6^2 is approximation of which of the following?