Given that n < 0 ...A
Also, n^2 < 1/100
i.e. |n| < 1/10
i.e. -1/10 < n < 1/10
using A from above,
-1/10 < n < 0
taking reciprocal, (applies since both are on same side of 0)
-10 > n [editor: this should be 1/n]
i.e. less than -10