If n is an integer and 5^n > 4,000,000,000, what is the least possible value of n?  Choose one.
A) 7	B) 8	C) 14	D) 10	E) 11
When you seperate the 4000000000 into factors of 5 and 2 you get - &gt; 10^9 x 2^2 = 5^9 x 2^11   2 to the ^ 11 = 2048 so its 2048 x 5^9   that means 5^9 x 5^x must be greater   5^x &gt; 2048   5^1=5   5^2=25   5^3= 125   5^5= 3125 - &gt; so x must be at least 5   5^(9+5)= 5^14   14
<result>C</result>
If n is an integer and 5^n > 4,000,000,000, what is the least possible value of n?