By: (3+3+3) times 3 = 27
27 = 3 * 3 * 3
Because 3 x 3 x 3 = 27
1 x 999, 3 x 333, 9 x 111, 27 x 37
1, 3, 9, 27, 37, 111, 333, 999
1, 3, 9, 27, 37, 111, 333, 999.
1, 3, 9, 27, 37, 111, 333, 999.
1, 3, 9, 27, 37, 111, 333, 999
24.6667
1998
1, 3, 9, 27, 37, 111, 333, 999.
Eight: 1 3 9 27 37 111 333 999.
1 x 405, 3 x 135, 5 x 81, 9 x 45, 15 x 27.