Find P_(k+1) if P_(k)=2^(k-1)/k!

Question

(I used _ as a sign for a subscript)

A. 2^(k+1)/(k+1)!

B. 2^k/(k+1)!

C. 2^(k+1)/k!+1

D. 2k/k!+1

Thank you

Answer 1

Just replace every k with k+1. No math involved.