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 cac so nguyen duong n sao cho n^2/60-n la 1 so nguyen to

tim cac so nguyen duong n sao cho 2^2/60-n la SNT

a, Cho ( a,b) = 1 . Chung minh rang (a.b, a+b)=1

b, Cho (a,b)= 1. Tim UCLN (11a+2b , 18a +5b)

C,, Cho A = m+n ; B=m^2+n^2.Trong do m va n la cac so tu nhien nguyen to cung nhau. Tim UCLN (A,B)

d, Tim cac so tu nhien n sao cho n^3 - n^2 + n-1la so nguyen to

tim tat ca cac so nguyen duong n sao cho so T=2^n+1 la so chinh phuong 

B1. Cho f(1)=1008,f(1)+f(2)+...+f(n)=n^2.f(n) f(n)la ham so duong

tinh f(2015)

B2 Cho cac so nguyen to q,p,r,s sao cho cac so sau deu la so nguyen to p^s+s^q,q^s+s^r,r^s+s^p

tim cac so p,q,r,s

B3 co a,b,c duong a mu 3+bmu3=c^3

so sanh a^2015+b^2015 va c^2015

B1. Cho f(1)=1008,f(1)+f(2)+...+f(n)=n^2.f(n) f(n)la ham so duong

tinh f(2015)

B2 Cho cac so nguyen to q,p,r,s sao cho cac so sau deu la so nguyen to p^s+s^q,q^s+s^r,r^s+s^p

tim cac so p,q,r,s

B3 co a,b,c duong a mu 3+bmu3=c^3

so sanh a^2015+b^2015 va c^2015

B1. Cho f(1)=1008,f(1)+f(2)+...+f(n)=n^2.f(n) f(n)la ham so duong

tinh f(2015)

B2 Cho cac so nguyen to q,p,r,s sao cho cac so sau deu la so nguyen to p^s+s^q,q^s+s^r,r^s+s^p

tim cac so p,q,r,s

B3 co a,b,c duong a mu 3+bmu3=c^3

so sanh a^2015+b^2015 va c^2015

B1. Cho f(1)=1008,f(1)+f(2)+...+f(n)=n^2.f(n) f(n)la ham so duong

tinh f(2015)

B2 Cho cac so nguyen to q,p,r,s sao cho cac so sau deu la so nguyen to p^s+s^q,q^s+s^r,r^s+s^p

tim cac so p,q,r,s

B3 co a,b,c duong a mu 3+bmu3=c^3

so sanh a^2015+b^2015 va c^2015