Các câu hỏi tương tự
tim so tu nhien n de (n+3)(n+1) la so nguyen to
Tim so tu nhien n de (n+3)(n+1) la so nguyen to
tim so tu nhien n de 4n+n^2 la so nguyen to
tim s tu nhien n sao cho p=(n-2)(n+n-1) la so nguyen to
tim so tu nhien n nho nhat sao cho n+2,n+6 la so nguyen to
tim so tu nhien n de 2^3n-2 la so nguyen to
bai 1 tim so tu nhien co 4 chu so ab cd biet abcd+abc+ab+a=4321.tim abcd
bai 2 cho m , n la cac so tu nhien va p la so nguyen to thoa man 9/m-1=m+n/p. tinh A= p^2-n
bai 3 tim so co 3 chu so biet abc 1000/a+b+c=abc.
tim so tu nhien n de 2n+1 va 7n+2 la hai so nguyen to cung nhau
tim so tu nhien n de 23n-2 la so nguyen to