but chi mau cung loai moi hop co nhieu hon 2 but chi nhung it hon 6 but chi tinh ra lop da mua 120 but chi mau 6b mua duoc 130 but mau hoi moi hop mau co bao chiec

16 chiec chi gom 3 mau xanh ,do va den so but chi mau xanh bang 3/4 so but chi mau den nhung lai gap 3 lan so but mau do hoi so but mau den hon so but mau do la bao nhieu

co giao mua 16 chiec but chi moi chiec gia 3000dong neu co giao lay so tien do mua but may thi duoc 6 chiec hoi moi chiec but may gia bao nhieu tien

nguoi ta xep nhung chiec but chi vao hop, moi hop xep duoc 12 chiec. hoi co 1008 chiec but chi thi xeo duoc tat ca bao nhieu hop ? ( giai bang 10 cach )

giai bai toan sau:Co 38 chiec but gom hai loai :mau xanh va mau do.Biey rang 2/3 so but xanh bang 3/5 so but do.Tim so but moi loai?

giai chi tiet bai toan.

Co 7 but chi gom ba loai:mau do ,mau vang,mau xanh.So but mau do nhieu hon so but mau vang,nhung lai it hon so but mau xanh

        Hoi moi loai co bao nhieu but chi

               goi y:Bai toan nay gom giai bang phuong phap thu,chon

                              kb voi mk nha

mai co mot ta but chi mai it hon hung 2cai mai . mai co so but chi nhieu hon binhnhung lai ithon hung hoi ca ba ban co bao nhieu but chi

mai comot ta but chi mai it hon hung 2 cai but chi mai co so but chi nhieu hon mai nhung lai it hon hung hoi ca ba ban cobao nhieu but chi

co 7 but chi gom 3 loai mau do . mau  vang , mau xanh so but mau do nhieu hon so but mau vang nhung lai it hon  so but mau xanh hoi moi lai co may cai but