# Tweaking the Harmonic

Calculus Level 1

It is known that the harmonic series

$1 + \frac{1}{2} + \frac{1}{3} + \frac{1}{4} + \frac{1}{5} +\cdots$

diverges. What about if we only took every tenth term; does it still diverge?

$\frac{1}{10} + \frac{1}{20} + \frac{1}{30} + \frac{1}{40} + \cdots$

×