2 5 7 2 5 4 July 8, 2019 16 32 64 128 2 3 7 2 5 4 2 6 7 2 5 4 2 5 7 4 5 9 2 5 x 3 7 2 5 x 4 7 7 2x 2 2 5 2 x )= 5 4
