1 2 2 3 3 4 is equal to July 8, 2019 16 32 64 128 2 1 3 4 3 5 is equal to 2 upon 3 3 upon 4 1 upon 2 is equal to If a 1 2 3 and b 2 3 4 then a ∩ b is equal to 1 2 + 3 4 1 + 2 + 3 + 4 = 10 1 - 2 = 4
