4 9 3 7 12 July 8, 2019 16 32 64 128 4 9 7 12 x 1 3 3 9 4 12 7 pattern 3 4 7 12 9 sequence 7 12 x 4 9 3 Arrange 3 4 5 9 and 7 12 in a descending order 9 3 7 divided by 12 4 7 4/9 - 7/12 x = 1/3
