What is the decimal conversion of 111?

Answer 1

It depends on the base used for 111. But guessing that binary is implied, it would represent seven: (1 x 2²) + (1 x 2¹) + (1 x 2º) = (1 x 4) + (1 x 2) + (1 x 1) = 4 + 2 + 1 = 7.