co bao nhieu so tu nhien nho hon 13 va khong lon hon 67
co bao nhieu so tu nhien khong nho hon 15 va khong lon hon 67
co bao nhieu so tu nhien nho hon 13 ma khong lon hon 67
cho A la tap hop cac so tu nhien le nho hon 54 va khog lon hon 1997 co bao nhieu phan tu
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......
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 nhien lon hon 8 nho hon 9
có bao nhieu so tu nhien nho hon13 va k lon hon 67
a.tim phan so co mau la 20 sao cho phan so do lon hon 4/13 va nho hon 5/13
b.tim phan so co mau bang 20 sao ho phanso do lon hon 5/7 va nho hon 5/6
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?