Question

[Ngo khanh huyen]

1) Cho 2 so khac nhau . So lon co chu so hang chuc la 7 , chu so hang don vi la 3 . Neu xoa chu so 7 va chu so 3 do ta duoc so be . Hieu cua 2 so do la 9082 . Tim 2 so do ?

2)So sanh A va B :

A = 2008/987654321 + 2009 / 246813579 . Day la phan so

B = 2009/987654321 + 2008 / 246813579 . Day la phan so