If 2^2n + 2^2n + 2^2n + 2^2n = 4^20, then n = Choose the correct answer
A) 3
B) 6
C) 19
D) 23
E) 24
2^2n + 2^2n + 2^2n + 2^2n = 4^20   =&gt; 4 x 2^2n = 4^20 = 2^40   =&gt; 2^2 x 2^2n = 2^40   =&gt; 2^(2n+2) = 2^40   =&gt; 2n+2 = 40=&gt; n =19   So. Answer will be 19.
<result>C</result>
If 2^2n + 2^2n + 2^2n + 2^2n = 4^20, then n =