tim ca cac bo 3 so nguyen lien tiep sao cho tong va tich cua chung bang nhau
minh co may bai toan violympic hoi kho minh ko giai duoc.Cac ban giai chi tiet giup minh nha:
1.tim 2 so tu nhien le biet tong cua chung bang 114 va giua chung co 42 so chan
2.tim 2 so tu nhien lien tiep biet tong cua chung bang 2016
3.tong 5 so le lien tiep bang 515 Tim so lon nhat
4.tim 2 so tu nhien le lien tiep co tong bang 222
5.tim 2 so tu nhien, biet tong cua chung bang 848 va giua chung co tat ca 81 so chan
tim-cac-so-nguyen-duong-lien-tiep-ma-tong-cua-chung-la-mot-so-nguyen-to
Cac chu so phan muoi, phan tram, phan nghin cua mot so thap phan co 3 chu so o phan thap phan la 3 so le lien tiep . Tong cac chu so o phan thap phan bang phan nguyen cua so do, cac chu so o phan nguyen va phan thap phan deu khac nhau . Tim so thap phan do ?
biet tong cac tich cua tung cap hai so trong 3 so tu nhien lien tiep bang 74 . bo 3 so do la?
Gọi 3 số tự nhiên liên tiếp đó là a, a+1, a+2. Ta có:
a(a+1) + (a+1)(a+2) = 74
<=> (a+1)(a+a+2) = 74
<=> (a+1)(2a+2) = 74
<=> 2(a+1)^2 = 74
<=> (a+1)^2 = 37.
=> ko có số thỏa mãn
1. Tim tat ca cac so co 2 chu so sao cho moi so gap 2 lan tich cua no?
2. Tim so nguyen to co 3 chu so biet rang neu viet so do theo thu tu nguoc lai thi ta duc 1 so la lap phuong cua 1 so tu nhien?
3. Tim so tu nhien co 4 chu so biey chu so hang nghin bang chu so hang don vi chu so hang tram bang chu so hang chuc va so do viet duoc duoi dang tich cua 3 so nguyen to lien tiep?
tim 3 so nguyen to lien tiep sao cho tong cac binh phuong cua cac so so do 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
phan tich cac so sau ra thua so nguyen to roi tim tap hop cac uoc cua moi so do 78;70
3)tim hai so tu nhien lien tiep co tich bang 1190
Tim hai so nguyen biet:
a,Tich cua chung bang 4747 vaf tong cua chung bang-148
b,Tich cua chung bang -7373 va tong cua chung bang 28
c,Tich cua chung bang 1261 va hieu cua chung bang -84