Tuyển Cộng tác viên Hoc24 nhiệm kì 26 tại đây: https://forms.gle/dK3zGK3LHFrgvTkJ6
tim tat ca cac so nguyen to a,b,c co the bang nhau thoa man abc<ab+bc+ca chung minh rang neu b la so nguyen to >3 thi (b+1)(b-1) chia het cho 24
tim tat ca cac bo 3 so nguyen to lon hon 3 sao cho :a.b.c<a.b+b.c+c.a
cho B=n/n-3(n thuoc Z , n khac 3)
tim tat ca cac gia tri nguyen cua n de B la so nguyen
CHo C= 3n+5.n+7(n thuoc Z, N khac -7)
tim tat ca cac gia tri nguyen cua n de C la so nguyen
Tim tat ca cac so nguyen to p va q sao cho so 7p+q va pq+11 cung la cac so nguyen to
Tim tat ca cac so nguyen to p sao cho p+2 va p+28 cung la so nguyen to
a,Tim cac so nguyen a,b sao cho a.b=-3
b,tinh tong cac so nguyen x biet: -6<x+2<8
c,tim tat ca cac U(-15)
tim tat ca cac so nguyen to a va b sao cho : a2 - 6b2=1
tim tat ca cac so nguyen to p va q sao cho : 7p+q va pq+11 cung la so nguyen to
tim 3 so nguyen to a,b,c sao cho abc nho hon ab+bc+ca
