Question

[loiken]

moi nguoi giup toi voi........cho ket qua thoi nha

1. gia tri x+y+z biet :

lx-5l+ly-4l+lz-4l=0

2.so cac uoc nguyen duong cu 2^6.3^3

3.so cac uoc nguyen duong cua 18

4.so duong thang tao thanh boi 8 biem phan biet doi mot khong thang hang

5.so tu nhien n thoa man 2^n+1:4^2=1024

6.UCLL(12,18,24)

7.so tu nhien n thoa man 2+4+6.......+n=110

8.tim x 576.15:x=540

9.gia tri a+b+c biet

a+b=10,a+c=25,b+c=25

so phan tu cua tap hop A cac so le nho hon 23