1/4 , 1/8, 1/16, 1/32

Question

1/4 , 1/8, 1/16, 1/32
Algebraic expression for the number sequence

oobleck · Answer

this is a Geometric sequence, with a = 1/4 r = 1/2 so a_n = 1/4 (1/2)^(n-1) = (1/2)^(n+1)