tim 1 so tu nhien co 2 chu so biet neu viet them chu so 0 vao giua hai chu so cua so do ta duoc so moi bang 7 lan so phai tim
tim so a de so chu so cua day gap gap 3 lan a 1,2,3,..,a
tim so tu nhien lon nhat co 3 chu so biet so do bang tong cua tat ca cac so co 2 chu so duoc lap tu 3 chu so cua so do
1 a) Co bao nhieu so tu nhien co 2 chu so khac nhau ?
b) Co bao nhieu so tu nhien co 2 chu so khac nhau ma trong moi so co chu so hang chuc be hon chu so hang don vi ?
2 De danh so trang cua 1 quyen sach day 150 trang can danh bao nhieu lan cac chu so ?
mik hua se k cho ban nao lam day du va dung nhat huhu
BAI 1 HAI HINH VUONG CO SO DO CANH GAP NHAU 3 LAN HOI DIEN TICH CUA HAI HINH DO GAP NHAU BAO NHIEU LAN
BAI 2 TIM SO TU NHIEN LON NHAT CO CAC CHU SO KHAC NHAU VA CO TICH CAC CHU SO BANG 40
CAU 1: Viet them hai chu so thich hop vao day so sau
1 , 2, 3, 5, 8 , ...............
CAU 2: Tim so tu nhien x biet
(x+1) + (x+2) + (x+3) + ...... + (x+100) = 5050
CAU 3 : Mot manh dat hinh thang co day nho bang 150m , day lon bang 5/3 day nho , chieu cao bang 2/5 day lon . Hoi dien tich manh dat bang bao nhieu hec ta ?
CAU 4 : Trung binh cong cua ba so la 38 , trong do so thu nhat 2 lan so thu ba . Neu gap doi so thu nhat va so thu hai thi trung binh cong cua chung bang 67 . Tim ba so do
LAM CHI TIET HO MINH NHA . LAM LUON HO MINH NHA DANG CAN GAP . CAM HON NHIU
tim mot so tu nhien co 3 chu so ma chu so hang chuc bang 1/3 chu so hang tram va gap 3 lan chu so hang don vi
tim so tu nhien co hai chu so biet viet them chu so 0 vao giua hai chu so cua so do ta duoc so do bang 7 lan so phai tim
Cho 3 so tu nhien trong do 2 lan so thu nhat bang 3 lan so thu hai va bang 5 lan so thu ba. Tim moi so biet hieu cua so lon nhat va be nhat la 72.