X 1 5 7 15 July 8, 2019 16 32 64 128 5 х 1 7 15 1 5 x 2 3 )= 7 15 4 x 1 )= 15x 7 2x 5 1 3 1 5 x 8 15 7 15 1 3 x 5 = 7 15 2x 1 5 x 2 3 x 7 15 1 7 15 x 5 10 11 3 5x 1 5 x 15 )= 7 14 15 x 7 x 1 5
