If you want to make a digit binary code (only using and ), how many different codes are there?
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
The response is wrong ! The number of combinations is 2^9+2^8+...+2^0=1023 not 1024...