Các câu hỏi tương tự
Chung minh rang: Neu p la so nguyen to lon hon 3 thi (p-1) (p+1) chia het cho 24.
Cho p la so nguyen to lon hon 3. Biet rang p+2 cung la so nguyen to. Chung minh rang p+1 chia het cho 6.
1.chung minh rang
A=2+2^2+2^3+...+2^30 chia het cho 7
2.chung minh rang neu p la so nguyen to lon hon 3 thi p^2-1chia het cho 24
giai nhanh ho minh nhe!
Cho ba so nguyen to lon hon 3 , trong do so sau lon hon so truoc la d don vi . Chung minh rang d chia het cho 6
Cho p la so nguyen to lon hon 3.Chung minh rang (p-1)(p+10) chia het cho 6
Chung minh rang p+2 va p+4 la so nguyen to lon hon 3 thi tong cua chung chia het cho 12.
chung to rang so nguyen to p;p>5 khi chia cho 6 co the du 1 hoac 5
2)chung minh rang neu p va p+2 la so nguyen to lon hon 3 thi p+1 la mot hop so
cho a la so nguyen to lon hon 3. chung minh rang (a-1)(a+4) chia het cho 6
giai giup minh minh like cho
cho p va p +2 la cac so nguyen to lon hon 3 .Chung minh rang p+1 chia het cho 6