Viet tap hop cac so tu nhien co hai chu so,trong do:
a) Chu so hang chuc nho hon chu so hang don vi la 5
b) Chu so hang chuc gap 4 lan chu so hang don vi
c) Chu so hang chuc nho hon chu so hang don vi, tong hai chu so bang 14
viet tap hop cua cac so tu nhien co 2 chu so trong do
a chu so hang chuc nho hon chu so hang don vi la 5
b chu so hang chuc gap bon lan chu so hang don vi
c chu so hang chuc nho hon chu so hang don vi tong hai so do bang 14
ai giup mk thi se kb nha
Viet tap hop cac so tu nhien trong do
a chu so hang chuc nho hon chu so hang don vi la 5
b chu so hang chuc gap bon lan chu so hang don vi
c chu so hang chuc nho hon chu so hang don vi, tong 2 chu so bang 14
ai giup mk mk se kb nha cam on nhiu
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
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
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
- tim so chu so chan co 4 chu so
- viet tat ca cac so tu 100 den 999phai dung bao nhieu chuvso 9
-co bao nhieu so le co 3 chu so
- viet 1000 sdo tu nyhien dau tien hoi chu so 3 cco mat bao nhieu lan
-viet tap hop cac so tu nhien co 2 chu so trong do a ) chu so hang chuc nho hon hang don vi la 4 b) chu so hang chuc gap 3 lan chu so hang don vi c) chu so hang chuc nho hon chu so hang don vi ( tong 2 chu so = 12)
cho B la tap hop cac so co 2 chu so, trong do chu so hang chuc nho hon chu so hang don vi la 5. tap hop B co so 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?