2 + 2^2 + 2^3 + ... + 2^8 = ?  Choose the correct choice from the following options:
A) 510	B) 310	C) 210	D) 410	E) None of them
Given series is a G.P. with a = 2, r = 2 and n = 8.   sum = a(r^n-1)/(r-1) = 2 x (2^8 –1)/(2-1)= (2 x 255) =510   510nswer is 510.
<result>A</result>
2 + 2^2 + 2^3 + ... + 2^8 = ?