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
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
tim so tu nhien n nho nhat sao cho n+2,n+6 la so nguyen to
tim so tu nhien n nho nhat sao cho n ; n+2 ; n+6 la cac so nguyen to
bai 1
a, chung to rang 2n+5/n+3, ( n thuoc N ) la phan so toi gian
b, tim gia tri nguyen cua n de B= 2n+5/n+3 co gia tri la so nguyen
bai 2
tim so tu nhien nho nhat sao khi chia cho 3 du 1 cho 4 du 2 cho 5 du 3 cho 6 du 4 va chia het cho 11
Cho n la so nguyen,tim n nho nhat de:n^2+3n-13 chia het cho n+3.
tim so nguyen n sao cho 2n + 1/n - 5 la so nguyen
cho bieu thuc 2n+1/n+5(n thuoc Z)
a, tim n de Pco gia tri la 1 so nguyen
b,tim gia tri lon nhat,gia tri nho nhat cua P