On Fri, Jan 18, 2002 at 10:27:14AM -0600, Greg Bacon wrote: > In message <[EMAIL PROTECTED] > one.net>, > user who writes: > > Enumerating the possible operator layouts: > > - # # o # o # o > - # # o # # o o > - # # # o o # o > - # # # # o o o > > where '#' represents a number and 'o' an operator. > > A little combinatorics: > > 4! # positions for numbers > 4 # number of operations > x 4 # number of operator layouts > --- > 384 # size of search space
Each operator position can hold one of four operators, which means you have 4**4 different arrangements of operators for each of the four operator layouts. 4! * (4**4) * 4 = 24576 Ronald
