cho 51 so nguyen duong khong qua 100. chung minh rang ton tai hai so trong 51 so ay co tong bang 101
cho 1 so chinh phuong co 4 chu so. Biet rang chu so tan cung cua no la so nguyen to, tong cac chu so cua no cung la so chinh phuong va can bac 2 cua no co tong cac chu so cung la so chinh phuong
Cho 31 so huu ti sao cho bat ki 3 so nao trong chung cung co tong la mot so am . chung minh rang tong cua 31 so do la mot so am
ho 2019 so nguyen co tong chia het cho 6 . chung minh tong lap phuong cua chung cung chia het cho 6
cho 4 so le co tong la 202.CMR4so do nguyen to cung nhau
Viet phan so 4/3 thanh tong cua 5 phan so duong deu co tu bang 1.
Ban nao biet thi giúp minh nhe !!! Minh cam on cac ban nhiu!!!!!!!
hoc sinh khoi lop 7 cua truong Doan Ket lam bai kiem tra chat luong mon toan. Ket qua,so bai loai gioi chiem 44 phan tram tong so bai,so bai loai kha chiem 50 phan tram tong so bai, con lai la 15 bai trung binh va yeu.Hoi truong Doan Ket co bao nhieu hoc sinh khoi lop 7 ?
1 truong co 4 khoi hoc sinh khoi 6 = 8/9 so hoc sinh khoi 7 = 4/9 so hoc sinh khoi 8 = 6/5 so hoc sinh khoi 9 biet tong so hoc sinh khoi 6 va 8 hon 7 va la 3 ban tinh hoc sinh moi khoi
Ba phan so co tong la 213/70, cac tu so ti le voi 3;4;5 ,cac mau so ti le voi 5;1;2 . Tim 3 phan so do .
Giup minhvoi nghi mai khong ra . Minh tick cho .
3 cong nhan co nang suat lao dong tuong ung ti le vs 3;5;7. biet rang tong so tien thuong nguoi 1 va 2 la 7,2 trieu dong va so tien ti le thuan vs nang suat lao dong. tong so tien dc thuong cua 3 nguoi la..............trieu dong (nhap ket qua dupoi so thap thap phan