tim so nguyen duong a nho nhat sao cho 2a la chinh phuong 3a la lap phuong
tim a biet a=1/2+1/4+1/8+1/16+....[tong co 10 so hang]
tim ti so cua 2 so biet
a 40% so 1= 70% so 2
b 7,5 so 1 = 10 so 2
c 3/7 so 1= 5/9 so 2
90% cua 20,6km la ........?
ti so phan tram cua hai so 2 va 8 .....?
biet 10% cua so A la 18,6 .tim so A .....?
y*2+y/2=10
tim x biet 1/2+1/3 <x<3-1/3
so cac phan so co mau so bang 100 va nho hon 1
tim so tu nhien co 2 chu so biet rang tong cua 2 do bang 10
A,tim 3/4 cua 240va 1212yen
B,Tim mot so ,biet 3/4 cua no la 240 kg va 1212yen
C,Biet 2/3 cua so M la 150.Tim 1/3cua so M
Co ban nao biet noi dung minh cái nhe!MInh dang gap lam
Tim so tu nhien co 2 chu so biet rang tong bang 10 va viet nguoc lai ta duoc so moi hon so phai tim 54 don vi
tim so co hai chu so biet tong 2 chu so bang 10 va thuong la 4