Shunday natural k soni mavjudmi, bunda 5k-butun sonning beshincha darajasiga teng, 6k-butun sonning oltinchi darajasiga teng, 7k-butun sonning yettinchi darajasiga teng bo’lsin.
Shunday natural k soni mavjudmi, bunda 5k-butun sonning beshincha darajasiga teng, 6k-butun sonning oltinchi darajasiga teng, 7k-butun sonning yettinchi darajasiga teng bo’lsin.