nguoi ta viet 31,32,33,....X.
Tim X de chu so cua day gap 3 lan X
cho day 31,33,35,...,x . tim x de so chu so cua day gap 3,5 lan so so hang cua day
cho day so 1,2,3,4,5,...,x
tim x de chu so cua day gap 4,5 lan x
cho day so 1 ; 2; 3 ; 4; 5 ..........; x tim so x de so luong chu so cua day gap 5 lan luong so hang cua day
nhanh len nhe
cho day so tu nhien : 1 ; 2 ; 3 ; 4 ; ..................................................................................x
tim x de so chu so cua day gap 3 lan x
ccho day so 1,2,3,4.....,x tim de chu so gap 3 lan x
Cho day 31,33,35.....x Tim x de so chu so cua day gap 3,5 so hang cua day?
1 :nguoi ta viet lien nhauday so tu nhien bat dau la 1: 1 ,2, 3, 4 ,5 , hoi chu so chu 659 la chu so nao ?
2 : tim so co 3 chu so , biet rang chu so hang tram gap 4 lan chu so hang don vi va neu viet so ay theo thu tu nguoc lai thi no giam di 594 don vi.
3 ; tim 2 so biet rang tong cua chung gap 5 lan hieu cua chung , tich cua chung gap 24 lan hieu cua chung
4 : tim hai so biet rang tong cua chung gap 7 lan hieu cua chung con tich cua chung gap 192 lan hieu cua chung.
giai theo phuong phap lop 6 nhe
cho day so 2,4,6,8,...,x tim x biet so chu so cua day gap 2 lan x
tim so co hai chu so biet rang neu viet them chu so 3 vao giua 2 chu so cua so do ta duoc so co 3 chu so gap 11 lan so phai tim
( Giai day du giup mih voi, mih dang can gap. ai dung mih tik)