3 6 x 6 9 July 8, 2019 16 32 64 128 3 x 6 9x 6 3 6 x 90 3 x 6 9 2x 3 x 6 )+ 9 27 3 6 x 9 2 5 6 3 x 9 6 3 6 x 9 4 3 6 x 9 12 6 6 x 3 4 9 brain test 3 x 6/9 3 x 3 = 9