Các câu hỏi tương tự
n+1; n+3; n+7; n+9; n+13; n+15; n+19 deu la so nguyen to.
tìm n:
n+1; n+3; n+7; n+9; n+13; n+15; n+19 deu la so nguyen to.
1) Biet rang 996 va 632 khi chia cho n deu du 16 . Tim n.
2) Chung minh rang 7n + 10 va 5n + 7 la hai so nguyen to cung nhau ( n thuoc N )
3) Biet rang 7a + 2b chia het cho 13 (a,b thuoc N) . Chung minh rang 10a + b cung chia het cho 13
tim tat ca cac so tu nhien n de cac so sau la so nguyen to :n+1,n+3,n+7,n+9,n+13,n+15
tim cac stn n sao cho n+1;n+3;n+7;n+9;n+13;n+15 la so nguyen to
tim so tu nhien n sao cho:n+1; n+3; n+7; n+9; n+11; n+13; n+15 la cac so nguyen to
a, tim so tu nhien trong khoang tu 100 den 300 biet rang so do chia cho 4 cho 5 cho 6 deu du 2 nhung so do lai chia het cho 11
b, dung ba chu so 1 ; 2 ; 3 hay viet tat ca cac so tu n hien co ba chu so ma cac chu so khac nhau , chung to rang tat ca cac so tu nhien do dau la hop so
c, tim so tu nhien nho nhat cho bon chu so giong nhau biet rang so do co dung ba uoc deu la o nguyen to
bai 1:tim n thuoc n de:3(n+2) chia het cho n-2bai 2chng minh rang cac so sau la cac so nguyen to cung nhaua) 18n+3 va 21n+4b)2n+1va3n+1bai 3:tim hai so biet tong hai so la 90 va uoc chung lon nhat la 15bai 4:tim so tu nhien n lon nhat co 3 chu so sao cho n :15 du 9va n:35 du 29bai 5:tim uoc chung lon nhat cua cac so sau:a)18n+3 va 21n+4b)9n+13 va 3n+4bai 6:chung minh: voi moi a,b thuoc nta coUCLN(a,b)UCLN (5a+2b,7a+3b)AI DUNG TRUOC 9H MINH SE TICH CHO.THANHK YOU VERY MUCH!
Đọc tiếp
bai 1:tim n thuoc n de:3(n+2) chia het cho n-2
bai 2chng minh rang cac so sau la cac so nguyen to cung nhau
a) 18n+3 va 21n+4
b)2n+1va3n+1
bai 3:tim hai so biet tong hai so la 90 va uoc chung lon nhat la 15
bai 4:tim so tu nhien n lon nhat co 3 chu so sao cho n :15 du 9va n:35 du 29
bai 5:tim uoc chung lon nhat cua cac so sau:
a)18n+3 va 21n+4
b)9n+13 va 3n+4
bai 6:chung minh: voi moi a,b thuoc nta co
UCLN(a,b)=UCLN (5a+2b,7a+3b)
AI DUNG TRUOC 9H MINH SE TICH CHO.THANHK YOU VERY MUCH!
biet rang tong cac chu so n tu 1 den n bang 326 .Vay n=