Các số đó là : 17,26,35,44,53,62,71,80
Có tất cả 8 số
có 9 căp đó là:0-8;1-7;2-6;3-5;4-4;5-3;6-2;7-1;8-0.
co tat ca bao nhieu so co hai chu so ma tong hai chu so cua moi so do bang 8?
co tat ca bao nhieu so co hai chu so ma hieu hai chu so cua moi so do bang 6?
Cau 1 co tat ca ..... so co 2 chu so ma hieu 2 chu so cua moi so do bang 6
Cau 2 so lon nhat co 2 chu so ma hieu 2 chu so cua moi so do bang 5 . La :.............
Cau 3 so be nhat co 2 chu so ma tong 2 chu so cua moi so do bang 9 . La : .............
viet tat ca cac so co hai chu so ma tong cac chu so cua so do bang 15?
co tat ca bao nhieu so co 2 chu so ma tong cua no bang 8
co tat ca bao nhieu so co hai chu so ma tong hai chu so do bang 9
mot phep tru, biet hieu la so be nhat co 2 chu so ma tong cua 2 chu so do bang 7, so bi tru bang 59. tim so tru
CAC BAN GIAI THANH LOI GIAI GIUP TO VOI
AI LAM DAU TIEN TO TICH CHO
1/ tinh : 1 giờ : 3= ...phút?
2/ lop 2a co 4 ban; lop 2b co 5 ban du thi violypic cap thanh pho . Cac ban cua hai lop bat tay chuc mung nhau moi khi di moi nguoi mot lan. Hoi co tat ca bao nhieu cai bat tay?Biết rằng các bạn trong cùng lớp ko bat tay nhau.
3/ so be nhat co 3 chu so khac nhau cua phep chia chu so hang tram cho chu so hang chuc bang thuong cua phep chia chu so hang chuc cho hang don vi la so.......
4/ cho day so :0,1,2,3,6,11,...So thich hop tiep theo cua day so do la:...
5/ so lon nhat co 3 chu so khac nhau ma tong cac chu so cua so do bang 21la:....
so lon nhat co hai chu so ma hieu cua hai so moi so do bang 5 la
cac ban oi giup to voi ai lam dau tien to tich cho
hay cho biet co tat ca bao nhieu so co hai chu so ma tong hai chu so cua so do khong be hon 15
