tong cac so nghich dao cua cac so sau : 120,168,224,288,.......,9800
cho 2 phan so co tong bang 2015 lan tich cua chung
tinh tong cac phan so nghich dao cua chung
Cho 2 phan so co tong bang -3 va tich bang 12/5. Tinh tong cac so nghich dao cua 2 phan so do
cho cac so 10, 40,88,154,238,340 .tinh tong cac so nghich dao cuc cac so do moi cach nhanh nhat.
Tim 3 phan so biet tong cac nghich dao cua chung la mot so tu nhien?
tim 3 so tu nhien doi mot khac nhau sao cho tong cac nghich dao cua 3 so nay co gia tri la so tu nhien
cho 2 phan so co tong bang -3 va tich bang 12/5 tinh tong cac so ngich dao cua 2 phan so
1.cho hai phan so co tong bang -3 va tich bang 12/5. tinh tong cac nghich daao cua hai phan so do
2.cho hai phan so toi gian a/b va c/d. biet a/b+c/d E z. chung minh /b/=/d/
tim so tu nhien viet dc duoi dang\(c^{b-a}\); biet rang \(1\le a< b< c\)vaa,b,c la cac so tu nhien sao cho tong nghich dao cua chung la mot so tu nhien