cho h tap hop cac so tu nhien co 2 chu so ma chu so hang chuc gap 3 aln chu so hang don vi . Phan tu nho nhat cua tap hop h
cho h la tap hop cac so tu nhien co hai chu so ma chu so hang chuc gap 3 lan chu so hang don vi phan tu nho nhat cua tap hop h la
viet bang cah liet ke cac phan tu cua cac tap hop sau:
a) tap hop A cac so tu nhien co 2chu so ma chu so hang chuc lon hon chu so 3
b) tap hop B cac so tu nhien co 2 chu so ma chu so hang don vi gap doi hang chuc
c) tap hop C cac so tu nhien co 2 chu so ma trong so do co it nhat 1 chu so 4
Cho a,b thuộc N sao a lớn hơn 2,b lớn hơn 2 .Chứng tỏ a+b nhỏ hơn ab
cho tap hop A cac so tu nhien co 2 chu so , biet chu so hang don vi gap doi chu so hang chuc
a, hay liet ke cac phan tu cua tap hop A
b, viet tat ca cac tap hop con cua A co 2 phan tu
c, viet tat ca cac tap hop con cua A cp 3 phan tu
a, A={21;42;63;84}
b, {21;42} ; {21;63} ; {21;84}
{42;63} ; {42;84}
{63;84}
c, {21;42;63} ; {21;42;84} ; {21;63;84}
{42;63;84}
cho Fla tap hop cac so tu nhien co 2 chu so ma chu so hang chuc nho hon hang don vi la 5 . hoi tap hop Fco bao nhieu phan tu
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?
cho e la tap hop cac so tu nhien co hai chu so ma chu so hang chuc nho hon chu so hang don vi la 4
so phan tu cua e la
Goi M la tap hop cac so tu nhien co 2 chu so ma chu so hang chuc be hon
chu so hang don vi la S .Phan tu lon nhat cua F.
cho E tap hop cac so tu nhien co hai chu so ma hu so hang chuc nho hon chu so hang don vi la 4 ,tim so tap hop g
Q la tap hop so tu nhien co 2 chu so ma trong moi so chu so hang chuc lon hon chu so hang don vi la 2 . tinh so phan tu cua tap hop Q