6 4 x 2 3 25 July 8, 2019 16 32 64 128 X 1 4 x 2 3 25 6 6 75 x 4 2 4 2 x 3 25 10 6 x 4 2 25 3x8 3 2 x 6 )- 3 x 4 )= 4x 25 2 6 × 3 4 2 6x3 4