Question

The n^th term of the sequence 1/2,3/4,7/8,15/16 is ...

(a) 2ⁿ - n - 1

(b) 1 - 2^-n 

(c) 2^-n + n - 1

(d) 2^{n - 1}

Answer 1

Answer is (b) 1 - 2^-n