1 3 x 10 21 July 8, 2019 16 32 64 128 1 3 6 10 x 21 28 3 4 x 21 )= 10 1 2 1 10 21 x 15 3 4 1 + 2 + 3 + 4 = 10 1 2 3 go 100 10 1 1 2 3 tiktok 1 2 3 mp3