Biet so a lon hon trung binh cong cua so a va cac so 1989 , 2003, 2034 la 4 don vi vay so a la ....
biet so A lon hon trung binh cong cua so A va cac so : 1989 , 2003 , 2034 la 4 don vi . tim so A
Biet so A lon hon trung binh cong cua so A va cac so 1986 , 1999 va 2013 la 32 don vi . Tim so A
Tim so tu nhien A .Biet A lon hon trung binh cong cua A va cac so 38 ,42,67 la 9 don vi
biet so a lon hon tbc cua so a va cac so 1989,2003 va 2034la 4 don vi
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Trung binh cong cua hai so la 59 .Tim hai so biet so lon hon so be la 6 don vi
biet trung binh cong cua hai so la 185 va biet so lon hon so be 24 don vi tim hai so do
