# Math Help - show the number is not integer

1. ## show the number is not integer

Let n be a positive integer. Show that the number S=1+1/2+1/3+...+1/n is not an integer.

2. Originally Posted by mandy123
Let n be a positive integer. Show that the number S=1+1/2+1/3+...+1/n is not an integer.
this was a problem of the week (we need $n \ge 2$), see here