4 4 1 9 7 5 July 8, 2019 16 32 64 128 4 6 1 9 7 5 4 4 5 x 1 1 9 x 1 7 8 4 3 7 5x 1 2 4 9 )- 1 5 7 4 4 5 1 9 what is the mean What does 7 4 4 5 1 9 mean
