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tim tat ca cac so nguyen to p sao cho p^2 +59 co dung 6 uoc duong
Tim tat ca cac so nguyen to p sao cho p^2+59 co dung 6 uoc so la so duong
Can gap .thks truoc bye
tim tat ca cac so nguyen to p sao cho p-1 va p+1 deu co 6 uoc
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
tim uoc chung lon nhat cua tat ca cac so tu nhien co 6 chu so gom cac chu so tu 1 den 6
tim tat ca cac so nguyen duong co dang abcde thoa man abc-de chia het cho 101
cho so tu nhien co tat ca 3 uoc so nguyen to.Tap hop cac uoc cua so do co so phan tu la
cho so tu nhien B = a^xb^y; trong do a ;b la so nguyen to khac nhau ;x ;y la cac so tu nhien khac o .Biet B^2 co 15 uoc .Vay B^3 co tat ca uoc
Tim tat ca cac so nguyen to p sao cho p+2 va p+28 cung la so nguyen to
