Các câu hỏi tương tự
1.tim 2 so tu nhien co hieu bang 2002 va tich bang 2006.
2.cho 100 so tu nhien 1,2,3,4,....100.
co the chon duoc 71 so tu nhien sao cho tong cua chung bang tong cua 29 so con lai khong
3.mot so chan co 4 chu so , trong do so tao boi chu so hang tram va hang chuc gap 3 lan chu so hang nghin va gap 2 lan chu so hang don vi .
[CAC BAN GHI LOI GIAI GIUP MINH NHE MINH CAM ON]
tim 2 so tu nhien chia het cho9 biet:
tong cua chung bang 513* va so lon gap 2 lan so nho
co hai so tu nhien nao tong bang 1999 va tich bang 5479 khong
co hai so tu nhien nao hieu bang 98 va tich bang 2002 khong
tinh tong cac phan so toi gian khong la so tu nhien co mau 11 lon hon 12 va nho hon 35
giup toi voi
tim so tu nhien co hai chu so thoa man ba dieu kien sau.tong cac chu so cua no khong nho hon 7 tong binh phuong cac chu so khong lon hon 30.hai lan so duoc viet boi cac chu so cua so phai tim theo thu tu nguoc lai khong lon hon so do
tinh tong cua so tu nhien nho nhat co 3 chu so khac nhau va so tu nhien lon nhat co 3 chu so khac nhau
viet tap hop cac so tu nhien co hai chu so,trong do:
a,chu so hang don vi lon hon chu so hang chuc 4 don vi
b,chu so hang don vi gap 3 lan chu so hang chuc
c,chu so hang don vi nho hon chu so hang chuc va tong hai chu so =17
co bao nhieu so tu nhien khong nho hon 15 va khong lon hon 67
cho B la tap hop cac so tu nhien chan khong nho hon 13 va khong lon hon 3000. B co so phan tu la......