For each of the following infinite series

MATHEMATICS · Multi-part · CBSE · Mathematics · Sequences and Series · Sequences and Series

Problem

For each of the following infinite series, state with justification whether it converges or diverges: (a)

4+2+1+\tfrac12+\cdots

(b)

5-3+1.8-1.08+\cdots

(c)

7+7.7+8.47+\cdots

(d)

-2+1-\tfrac12+\tfrac14-\cdots