5 , 6 , 8 , 10 , 11 , 13 ,15
5+6=11ma 11-1=10
6+8=14ma 14-1=13
8+10=18ma 18-1=17
2 so tiep theo la 13;17
chac chan dung
nho h cho minh nhe
Neu quy luat va dien tiep 2 so hang vao day so sau:
5,6,8,10,...,....
1,1,3,5,17,....,....
Viet tiep 3 so hang vao moi day so sau
a, 2,7,22,67,...,...,...
b,1,2,3,6,12,...,...,...
viet tiep 2 so hang cua day so sau
a 100,93,85,76,....
viet tiep 3 so hang cua day so sau :
a,1;2;3;5;8;...;...;...;
b,0;2;4;6;12;22;...;...;...;
c,2;7;13;20;...;...;...;
cho hai day so :
1 , 4, 7 , 10 , 13 , ....
1/2 , 2/3 , 3/5 , 5/8 , 8/13 ,.....
a, hay neu quy luat va viet hai so hang tiep theo cua moi day so tren .
b, so 2005 co phai la so hang cua day so 1,4,7,10,13 ... khong ? vi sao ?
viet them ba so hang vao day 5,7,12,19,31,50
a) viet tiep 1 so vao day so sau cho phu hop : 1; 4; 9;16; ?
b) can bao nhieu chu so de danh so cac trang cua 1 quyen sach co 150 trang ?
cho day so:36,45,54
a) viet them 3 so hang thich hop vao day so tren
b) so hang thu 20 thuoc day so nao
c) so 3469 co thuoc day so tren khong?vi sao
giai chi tiet giup minh nhe
hay dien tiep vao o trong so thu tam trong day sau la 3,6,15,42,123