Question

2^n-1=16

Answer 1

\(2^{n-1}=16\\ \Rightarrow2^{n-1}=2^4\\\Rightarrow n-1=4\\ \Rightarrow n=4+1\\ \Rightarrow n=5 \)

Answer 2

2^n-1 = 16

2^n-1 = 2⁴

n - 1 = 4

n       = 4 + 1

n       = 5

Answer 3

n = 5