Question

cate numere naturale mai mici decat 150 impartite la 20 dau rest 7?

Answer 1

x:20=y rest 7
x=20y+7
y=1,2,3,4,5,6,7
x=27,47,67,87,107,127,147
27:20=1 rest 7
47:20=2 rest 7
67:20=3 rest 7
87:20=4 rest 7
107:20=5 rest 7
127:20=6 rest 7
147:20=7 rest 7