Let $ABCDEF$ be a convex hexagon. Let $A',$ $B',$ $C',$ $D',$ $E',$ $F'$ be the centroids of triangles $FAB,$ $ABC,$ $BCD,$ $CDE,$ $DEF,$ $EFA,$ respectively. (a) Show that every pair of opposite sides in hexagon $A'B'C'D'E'F'$ (namely $\overline{A'B'}$
read more .. Consider the set S={1,2,3,4,12,13,14, ..., 1234\}, which consists of all positive integers whose digits strictly increase from left to right, and all the digits are from 1 to 4. This set is finite. What is the median of the set?
+8 +328
0 Online Users