hay cho biet co bao nhieu so co 3 chu so ma cac chu so cua nhung so do deu lon hon 4
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?
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
co bao nhieu so huu ti vit duoi dang tu bang 9 ma gia tri cua so do lon hon -3/5 va nho hon -9/4
4 so tu nhien lien tiep la cac chu so cua 1 so tu nhien co 4 chu so. Viet theo thu tu nguoc lai ta se duoc so moi lon hon so cu bao nhieu don vi?
so hoc sinh cua mot truongla 1 so lon hon 900co ba chu so moi lan xep hang 3,4,5vua du.hoi truong do co bao nhieu hoc sinh
giup to voi cac ban oi
co bao nhieu so co 2 chu so ma chu so hang chuc lon hon chu so hang don vi
4 so tu nhien lien tiep la cac chu so cua 1 so tu nhien co 4 chu so. Viet theo thu tu nguoc lai ta se duoc so moi lon hon so cu bao nhieu don vi?
diễn giải nhé
co bao nhieu chu so tu nhien co hai chu so ma chu so hang chuc lon hon chu so hang don vi