Tim 4 so nguyen to lien tiep sao cho tong cua 4 so nguyen to do cung la 1 so nguyen to
tim 4 so nguyen to lien tiep sao cho tong 4 so do la so nguyen to
tim 3 so nguyen to lien tiep sao cho tong cac binh phuong cua cac so so do la 1 so nguyen to
tim 4 so nguyen to lien tiep ma tong cua chung la 1 so nguyen to
tim 3 so nguyen to lien tiep sao cho tong cac binh phuong cua no cung la so ngyen to da
3 số nguyên tố đó là :
3;5;7
Vì: 32 + 52 + 72 = 83
83 là số nguyên tố
tim-cac-so-nguyen-duong-lien-tiep-ma-tong-cua-chung-la-mot-so-nguyen-to
1) chung to rang tong cua 3 so nguyen lien tiep chia het cho 3
2) chung to rang tong cua 5 so nguyen lien tiep chia het cho 5
1)
gọi ba số tự nhiên liên tiếp là a;a+1;a+2
ta có :
a+(a+1)+(a+2)=3.a+3=3.(a+1) chia hết cho 3
=>dpcm
2) gọi 5 số tự nhiên liên tiếp đó là a;a+1;a+2a;a+3;a+4
ta có :a+(a+1)+(a+2)+(a+3)+(a+4)=5a+10=5a+2.5=5(a+2) chia hết cho 5
=>dpcm
tim so nguyen to p sao cho no vua la tong cua 2 so nguyen to vua la hieu cua 2 so nguyen to nao do ket qua bang 5 cho minh cach giai nha
tim so nguyen to P sao cho P vua la tong cua hai so nguyen to vua la hieu cua hai so nguyen to
Chon cau sai
A.Hai so nguyen to chac chan la 2 so nguyen to cung nhau
B.Hai so tu nhien lien tiep la hai so nguyen to cung nhau