Question

Equivalent the Geo metric series ???​

Answer 1

2^1 - 1 = 1

2^2 -1 = 2

2^3 -1 = 4

2^4 - 1 = 8

2^5 -1 = 16

2^6 -1 = 32

2^7 - 1 = 64

2^8 -1 = 128

Sum = 1 + 2 +4 + 8 + 16 + 32 +64 + 128  = 255

Answer is B