Are there more decimal or binary numbers in the world?

Question

The Hindu–Arabic numeral system is a positional decimal numeral system, and is the most common system for the symbolic representation of numbers in the world.

Is this statement true? I guess the binary code for characters or opcodes is not a number. Not sure about addresses.

Answer 1

This question is vague, and the answer depends entirely on how you count representations to determine what "most common" even means.

If you count the number of people who use it regularily, then decimal wins by a landslide. If you count the number of man-made representations of numbers here on Earth (and possibly the few we've sent to space), then clearly binary numbers outnumber decimal numbers.

I'm sure I've missed quite a few other different interpretations of "most common". So there is not one right answer until you decide to pin down concrete definitions one can actually work with.