tim cac so nguyen duong n sao cho n^2/60-n la 1 so nguyen to
tim cac so nguyen duong m va n sao cho 3m-1/2n va 3n-1/2m cung la so nguyen duong
cac ban giai ho minh nha
tim so nguyen duong n nho nhat sao cho n/2 la binh phuong cua mot so nguyen va n/5 la lap phuong cua 1 so nguyen
tim so nguyen duong n nho nhat sao cho n^2 + 5n + 1 la so nguyen to
tim so nguyen duong sao cho n n+2 la uoc cua 11 va n-2 la uoc cua 11
Bai1 a,cho n thuoc N. Chung minh rang 6n+5 va 4n+3 la 2 so nguyen to cung nhau
b, tim so nguyen x sao cho x+2016 la so nguyen duong nho nhat
Cho bieu thuc A = 3/n-2
a) Tim cac so nguyen n de bieu thuc A la phan so
b) Tim cac so nguyen n de A la mot so nguyen
Cac giup minh nhe minh dang can gap.
tim so tu nhien n nho nhat sao cho n ; n+2 ; n+6 la cac so nguyen to
tim tat ca cac so nguyen duong x,y sao cho cac so x2+3.y va y2+3.x deu la so chinh phuong cua 1 so