Các câu hỏi tương tự
co bao nhieu so co 3 chu so ma tong cac chu so cua no bang 5
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
hay cho biet co bao nhieu so co 3 chu so ma cac chu so cua nhung so do deu lon hon 4
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
co bao nhieu so co 3 c/s ma chu so cua cac so do lon hon 4
ban nao tra loi ho minh voi :
so 1234 la mot so co bon chu so sao cho tich cac chu so cua no bang 24 . hoi co tat ca bao nhieu so co bon chu so ma tich cua cac chu so bang 24
cac ban chi can ghi ket qua thoi nha
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 .....
Co bao nhieu so co 3 chu so ma tong cac chu so bang 5
viet tap hop A gom cac so co 3 chu so sao cho tong cua 3 chu so do bang 5. Hoi A co bao nhieu phan tu ?