Các câu hỏi tương tự
CMR neu p la so nguyen to lon hon thi p2-1 chia het cho 24
Chung minh rang: Neu p la so nguyen to lon hon 3 thi (p-1) (p+1) chia het cho 24.
CMR:
Neu p va q la hai so nguyen to lon hon 3 thi p^2-q^2 chia het cho 24
Chung to rang neu p la so nguyen to lon hon 3 thi p2 - 1 chia het cho 3
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!
CMR
neu p va p+2 la 2 so nguyen to lon hon 3 thi tong cua chung chia het cho 12
chung minh p la so nguyen to lon hon 3 thi (p-1) nhan (p+1) chia het cho 24
cho p la so nguyen to lon hon 3.Chung minh (p-1).(p+1) chia het 24
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