Sequences and their sums

 

Sequences in which the numbers get larger as you go along:




 

What happens to the sums (running totals) of these sequences?



 

Sequences in which the numbers get smaller:





 

What happens to the sums (running totals) of these sequences?



 

Sequences in which the numbers get smaller, but never go below Zero:




 

How small do will the terms of these sequences get?



 

What happens to the sums (running totals) of these sequences?