có 45 số nha bạn
k mình nha
có 36 số nha mình tính nhầm
Co bao nhieu so tu nhien co hai chu so sao cho moi so chu so hang chuc lon hon chu so hang don vi ?
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
co bao nhieu so tu nhien co 2 chu so trong do chu so hang chuc nho hon chu so hang don vi la 5 ?
co bao nhieu so tu nhien co 2 chu so trong do chu so hang chuc nho hon chu so hang don vi va tong cua 2 chu so do bang 14.
co bao nhieu chu so tu nhien co hai chu so ma chu so hang chuc lon hon chu so hang don vi
- 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)
viet cac tap hop sau bang cach liet ke phan tu va chi ra moi tap hop co bao nhieu phan tu .
a, tap hop A cac so tu nhien co 2 chu so trong do chu so hang chuc lon hon chu so hang don vi la 2 .
b, tap hop B cac so tu nhien co 3 chu so bang 3 .
CO BAO NHIEU SO TU NHIEN CO 2 CHU SO MA CHU SO HANG CHUC NHO HON CHU SO HANG DON VI
co bao nhieu so tu nhien co 2 chu so ma chu so hang chuc lon hon chu so hang don vi
