1 is the value of no.11,because by adding 1 in a no.10 it will makes 11,and if you use subtraction of 1 in a no.11 is equals to 10.and there's nothing value numbers than 1.
10+1=11 =four pieces of 1
11-1=10 =four pieces of 1
=08 or 8.means infinite.
i'm using reverse mechanism.1 is my answer.thanks.;-)