2 x 5 5 x 7 9 x 3 July 8, 2019 16 32 64 128 2 1 x 3 2 3 x 5 2 5 x 7 2 7 x 9 Tính nhanh 2 x 5 5 x 7 9 x 3 X x 5 x 7 5 x chia 2 x 9 315 X 2 x 5 x 7 x 9 x 3 is median 5 then x 2 2 17 x 1 1 24 x 5 2 5 x 3 7 9 x 2 2 x 2 5 5 x 5 x 5 x 5 x 5 5 x 7 = 35
