Các câu hỏi tương tự
Cho hai so nguyen to cung nhau la a,b .
CMR hai so 11a+2b va 18a+5b thi hoac nguyen to cung nhau hoac co mot uoc chung la 19.
cho a la mot so tu nhien le, b la mot so tu nhien bat ki
chung minh rang : hai so a va a.b + 4 la hai so nguyen to cung nhau
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 a+ b = p la snt . chung to rang a va b la hai so nguyen to cung nhau . minh can gap
Cho a la so tu nhien le , b la mot so tu nhien .Chung minh rang cac so a va ab +4 nguyen to cung nhau
cho a=1+2+3+...+n v b= 2n+1 (voi n thuoc N , n>hoac bang 2 ) . Chung minh rang a va b la 2 so nguyen to cung nhau
cho a va b la hai so nguyen to cung nhau chung minh rang a^2+b^2/a.b la phan so toi gian
1) Biet rang 996 va 632 khi chia cho n deu du 16 . Tim n.
2) Chung minh rang 7n + 10 va 5n + 7 la hai so nguyen to cung nhau ( n thuoc N )
3) Biet rang 7a + 2b chia het cho 13 (a,b thuoc N) . Chung minh rang 10a + b cung chia het cho 13
chung to rang neu p,p+2 va p+4 deu la so nguyen to thi p3 +2 cung la so nguyen to