Tinh tong A=1+4+7+10+....+x biet x la so hang thu 2016 cua tong
tim 1 so biet khi nhan so do voi 9 thi duoc so tu nhien co 3 chu so hang tram la 6 con hang chuc va hang don vi la hang chuc va hang don vi cua so dau
tim so tu nhien biet khi so do nhan 9 thi duoc so co 3 chu so ma chu so hang tram la 6 va chu so hang chuc va hang don vi la chu so hang chuc va hang don vi cua so ban dau
tong so hang thu nhat,so hang thu haiva tong la 324.biet so hang thu nhat bang 4/6 tong hai so?tim hai so do
Tong cua 3 so thap phan la 6,66 so hang thu nhat va so hang thu 3 co ti so la 3 va co trung binh cong bang so thu hai tim ba so do
xe thu nhat cho dc 25 tan hang, xe thu 2 cho dc 35 tan h thu 3 cho dc so hang , xe thu 3 cho dc so hang kem so trung binh cong cua so hang ca 3 xe la 10 tan. Hoi so hang cua xe thu 3?????
Bai 1: Cho day so : 10; 13; 16; 19...
a) so 2002 la so hang thu bao nhieu cua day
b) Tim so hang Thu 107 cua day
Bai 2: tinh tong cua day so sau :
2; 4; 6; 8... 78; 80
Bai 3 : Cho day so
3; 6; 12; 24; 48...
Cac so 666; 2004 co thuoc day khong
Bai 4 : cho day 3; 18; 48; 93; 153...
a ) Tim so hang Thu 100 cua day
b ) so 11703 la so hang Thu bao nhieu cua day
Ai nhanh minh tick!
tong 2 so la 10,47.neu so hang thu nhat gap lan 5 lan so hang thu hai gap len 3 lan thi tong moi la 44.59 .tim 2 so do
Tong cua 3 so la 19,1 neu giam so hang thu nhat di 4 lan va giu nguyen so hang thu 2 thi dc tong moi la 7,4.Tim 2 so do