Question 462802
A) is decreasing because it is the same sequence, except each term is added with 1.


B) is increasing because each term is obtained by subtracting the terms of the original sequence from 1. It looks something like


1, 1-1/2, 1-1/3, 1-1/4, ...


C) is decreasing because it is the original sequence, except each term is squared. The function y = x^2 is monotonic for x > 0, so the original sequence decreasing implies that C) decreases as well.