Kjev, 4 months ago https://discuss.tchncs.de/pictrs/image/7a7f50b1-6d78-4668-94cd-4ba21c633869.jpeg Rule Number Square Root
https://discuss.tchncs.de/pictrs/image/7a7f50b1-6d78-4668-94cd-4ba21c633869.jpeg
Rule Number Square Root