Exponents

[vladmire]

I got lost somewhere

2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8 =

a.2^9
b.2^35
c.2^37
d. 2^10

[Zipper]

https://www.beatthegmat.com/roots-t22564.html