Notam astfel numerele
primul nr = a
al doilea nr = b
al treilea nr =c
a /-------/ suma lor 5 472
b/--------/
c/--------/--------/--------/--------/
5 472 : 6=912 ( a si b)
912 +912 = 1824 ( suma primelor doua nr. )
1824 *2 =3 648 ( c)
Verificam :
912+ 912+3648 = 5472
