Các câu hỏi tương tự
Tim a,b la cac so nguyen duong sao cho a+b^2 chia het cho a^2b-1
a.Tim 3 so a,b,c biet :3a=2b;5b=7c va 3a+5b-7c=60
b.tim cac cap so nguyen x,y sao cho x-2xy+y=0
cho a,b,c la cac so nguyen thoa man cac dieu kien: a+b-c=15; a-b+c=21; -a+b+c=-2015. Tim cac so nguyen do.
tim cac so nguyen n sao cho P=2n -1 / n-1 la so nguyen
tim so nguyen a;b biet :
a)3a-1 la boi cua 2a+1
b)a+b=ab
mau len nha toi rat can gap
TIM CAC SO NGUYEN X SAO CHO ( -2240 : 6X+3 ) : ( 1+ 2 : 3 ) LA SO NGUYEN
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
Tim ba so nguyen to a,b,c khac nhau sao cho abc<ab+bc+ac
Tim cac so nguyen x,y sao cho 112x+113y=1010