tong cua so nguyen am lon nhat co 2 chu so voi so nguyen duong nho nhat co 1 chu so la

Tong cua cac so nguyen duong lon nhat co hai chu so voi so nguyen am nho nhat co ba chu so la

cho A=2n+1/2n-1. tim n dể 

   a, a la so nguyen duong 

   b, a la so nguyen âm

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

tong sau day la so nguyen to hay hop so: 3.5.7 + (2n+1).(2n+3).(2n+5) voi n la so tu nhien

CMR 1 mũ 2n + 9 mũ 2n + 77 mũ 2n + 1977 mũ 2n ko phai so chinh phuong voi moi n nguyen duong

Tong cua cac so nguyen duong lon nhat co hai chu so voi so nguyen am nho nhat co ba chu so la

Co bao nhieu so nguyen duong n de n-37/n+43 la 1 so huu ti duong

cmr voi moi so n nguyen duong ta co 2mu n lon hon hoac bang n+2