hello all(adsbygoogle = window.adsbygoogle || []).push({});

a simple question how come

[tex]\sum_{k=1}^{n} k- \sum_{k=1}^{n} (k-1) \not= 1[/tex]

even though i know if you expand it out you would get n, isnt there an arithmetic property of series that relates to this?

thanxs

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Arithmetic of series

**Physics Forums | Science Articles, Homework Help, Discussion**