Rainbow coffee
Rainbow cafe offers a coffes's menu with an odd number of colors. If they have
different colors. How many kinds of cake can choose a cafeinomano?
Response can be written as . Find
The answer is 127.
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.
1 solution
All posible combination of colors are ( 0 1 2 8 ) + ( 1 1 2 8 ) + ( 2 1 2 8 ) + . . . + ( 1 2 8 1 2 8 ) = 2 1 2 8
Response is 2 n / 2 = 2 1 2 7