tìm 2 phan so toi gian o giua 2 phan so
1/5 va 3/5
5/7 va 3/6
1/2 va 1/3
tim 4 phan so nam giua hai phan so 5/6 va 5/7
hai so tu nhien co tong bang 2011 va giua chung co tat ca 9 so chan tim hai so do
hai so tu nhien co tong bang 2009 va giua chung co tat ca 5 so le
tim hai so tu nhien co tong cua chung bang 636 va giua chung co tat ca 11 so tu nhien khac
tim hai phan so biet tong cua bang 5/6 va hieu cua chung bang 1/6
tim hai phan so biet tong cua chung bang 17/20 va hieu cua chung bang 7/20
giai giup to vui an nghi ra hai phan so co tu so la 6 mau so la hai chu so tu nhien lien tiep va 5/7 la phan so nam o giua hai ps do la gi
viet 5 phan so nam giua 2 phan so 5/7 va 6/7
Tim 5 so thap phan khac nhau nam giua hai so 1,01 va 1,02
tim 4 phan so nam giua 2 phan so 3/5 va 4/5
tong cua ba so la 7/5.hieu cua phan so thu nhat va phan so thu hai la1/3.hieu cua phan so thu hai va phan so thu ba la 1/3.tim phan so thu nhat va phan so thu 3
tim hai so biet giua chung co 44 so tu nhien va so be bang 4 phan 5 so lon