pai frati gemeni pot avea 1,2,3,4,5,6,7,8,9,10, 11,12,13 , 14 , 15,16,17 ani
ultimul frate poate avea 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33
pai (35-a) :2= b b*2+a= 2b+a a= numar natural impar
pai gemenii au 30 de ani ,iar celalat 5 ani
