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
co ai giup toi giai bai nay voi
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