Cac ban giup minh voi minh phai nop bai trong hom nay cam on
Cac ban giup minh voi minh phai nop bai trong hom nay cam on
tong cua 3 so la 836 chu so hang tram cua so thu nhat la 5 so thu 2 la 3 neu xoa bo cac chu so 5va 3 thi se duoc 2 so co 2 chu so ma so nay gap 2 lan so kia tim 2 so do.
1 so tu nhien A co 4 chu so co chu so hang don vi lon hon 3 lan chu so hang tram, chu so hang chuc gap 8 lan chu so hang nghin, biet A chia het cho 9. Tim A.
Tim mot so co hai chu so biet rang neu viet them cung luc cs 1 vao ben phai va ben trai so do ta dc so moi gap 23 lan so da cho.
Tim hai so biet tong cua chung bang so lon nhat co ba chu so va hieu cua hai so do bang so lon nhat co hai chu so
Tonh cua 2 so tu nhien gap 3 lan hieu cua chung .Tim thuong cua 2 so tu nhien ay.
Viet cac tap hop sau va cho biet moi tap hop co bao nhieu phan tu
a,tap hop cac so tu nhien khong vuot qua 50
b, tap hop cac so tu nhiem lon hon 8 nhung nho hon 9
Mot so tu nhien khac 0 thay doi nhu the nao neu ta viet them
a,chu so 0 vao cuoi so do
b,chu so 2 vao cuoi so do
co hay ko cac so tu nhien a,b,c thoa man
(a..b) .(b-c) .(c+a) -3=2012
tim giao cua tap hoc C cac so chan va tap hop L cac so le