When I went to Susambil, I found out that Susambil money has four coins: copper, dinar, huml and vizr. I recognize this was not aware of the value of gal. But after some time I was offered to exchange one copper and one dinar for two viz. Soon one huml and one dinar were three- They offered to change the visa. Based on these propositions, which of the following right? A Copper is more expensive than a dinar.
B Dinars are more expensive than humid.
C Huml is more expensive than vizr.
D Vizr is more expensive than copper.
b·b=3·(a+c)
Выражение справа кратно 3, значит и слева должно быть кратно 3
b кратно 3
Из цифр только 3; 6; 9 кратны 3
1 случай b=3
3·3=3·(а+с) ⇒ 3=а+с
а=1 с=2 Число 132
а=2 с= 1 Число 231
а=3 с=0 Число 330
2 случай
b=6
6·6=3·(а+с)
12=а+с
а=9 с=3 Число 963
а=3 с=9 Число 369
Третий случай
b=9
9·9=3·(а+с)
27=а+с
1≤а≤9
0≤с≤9
В сумме 27 не получим
ответ. 132; 231; 330; 963; 369.