How many words can be made using the letters of the word SYZYGY? (words of abitrary lengths is allowed)
I understand that for at most one Y, so thess are the words made out of SYZG, the number of ways of doing it is 65
but then I dunno how to find the rest,,
can someone explain it please?
The answer is:
Two Ys
With All Three Ys
Adding the sum together:
Thanks!