hai so sau la so nguyen to hay hop so
A = 311141111
B = 1! x 2! x 3! x ............. 100!
nhờ giải giùm
cac ban gip minh cau hoi nay nhe
cac so sau day la so nguyen hay hop so
E = 1! + 2! + 3! + 4! + ... + 100!
Bai 1:tim so nguyen P biet P+2va P+4 deu la nguyen to
bai 2: tong 2^100×7×11+81^3 la nguen to hay hop so ( giai thich)
Bai 3: tim so nguyen to P de P +2,p+6,P+8 deu la cac so nguyen to
Các số sau là nguyên tố hay hợp số
A = 11…1 (2001 chử số 1)
2.B = 11…1 (2000 chử số 1)
3.C = 1010101
4.D = 1112111
5.E = 1! + 2! + 3! +…+ 100!
6.G = 3.5.7.9 – 28
7.H = 311141111
cho p va p+8 la cac so nguyen to [p>3] Hoi p+100 la so nguyen to hay hop so
cho M=a^100+b^100+c^100+d^100 trong do a,b,c,d la cac so nguyen to khac 0 hoi M la so nguyen to hay hop so
Ban nao dung minh se tich
Bai 1Tim nguyen to a de 4a+11 la so nguyen to nho hon 30
Bai 2 cac so sau la so nguyen to hay so hop so:
a=1*3*5*7*....*13+20
b=147*247*347-13
cac so sau la so nguyen to hay hop so:
a)a=1.3.5.7.13+20
b)b=147.247.347-1