How to Add a Digit to a Binary Number?

In base two, if you do this whole thing when we were adding the digits and then adding them again until you have a single digit, there's only two options. So in effect, i in dis number 13, i got zero. It's different than the number one orhe om. Do you have to, you'd have to add it by na, you have to have minary. In which case every time we add up all the ditis, will always end with one. Oh, but you just ended with a zero. Well, i did a different trick. I was adding maud two. And now here's a new conjecture. If i write down any binary number