so co 5 chu so ma hang don vi la 9 va nho hon so 10019 la so

so co 5 chu so ma chu so hang don vi la 9 va nho hon so 10019 la

so co 5 chu so ma chu so hang don vi la 9 be hon 10019

tim tat cac so tu nhien co ba chu so thoan man cac tinh chat sau : co tong cac chu so bang 9 chu so hang chuc lom hon chu so hang don vi la 2 don vi va neu ta doi chu so hang tram cho hang don vi thi duoc so moi lon hon so ban dau la 198 don vi

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

cho G la tap hop cac so tu nhien co 2 chu so ma chu so hang chuc nho hon chu so hang don vi la 6. Số phần tử của tập hợp G

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?

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 hai chu so trong do chu so hang chuc nho hon chu so hang don vi la 5