1 5 7 times 3 1 9 July 8, 2019 16 32 64 128 1 2 times 1 3 5 times 2 7 9 1 times 3 times 5 times 7 times 9 1 + 3 + 5 + 7 + 9 7 1/2 times 5 1/2 1 + 3 + 5 + 7
