S = Ư(8) = {-8; -4; -2; -1; 1; 2; 4; 8}
Vậy S có 8 phần tử
S có 8 phần tử ( cả số nguyên nha)
goi A la tap hop cac boi tu nhien cua 3 co hai chu so , B la tap hop cac boi tu nhien cua 5 co hai chu so . Vay so phan tu cua tap hop A giao B la
cho p la tap hop cac uoc khong nguyen to cua 180.vay so phan tu cua tap hop p=?
viet tap hop A gom cac phan tu la cac so nguyen co gia tri tuyet do nho hon 2014 . tap hop A co bao nhieu phan tu. tinh tong cac phan tu cua Tap hop A
goi A la tap hop cac so tu nhien co 3 chu so.Hoi A co bao nhieu phan tu
tim loi giai bai toan: cho hai tap hop A = (1;2;3;4;5;6)va B la tap hop cac so tu nhien le, lon hon 2. goi C la mot tap hop con nao do cua ca hai tap hop A va B. so phan tu nhieu nhat co the cau la
s la tap hop cac so tu nhien co 3 chu so ma moi so co tong cac chu so bang 3. So phan tu cua tap hop s la
Câu 1:so phan tu cua tap hop cac so tu nhien chan lon hon 3 va nho hon 2000
Câu 2:so phan tu cua tap hop cac so tu nhien chan khong vuot qua 30 la
Câu 3 co bao nhieu so tu nhien co hai chu so trong do chu so hang chuc nho hon chu so hang don vi la 5 ?
Câu 4:so phan tu cua tap hop cac so tu nhien khong vuot qua 20 la
Câu 5:cho tap hop M={5;8;9;1986;2010}co bao nhieu tap hop con cua M gpm nhung so chan?
tap hop cac uoc chung cua 12;48;60;90 co so phan tu la
S la tap hop so tu nhien co 3 chu so ma moi so co tong cac chu so bang 3.So phan tu cua tap hop S la .....
