(a) How many different outcomes are there from rolling n identical dice? (b) How many of these sequences contain at least one 6? I got $\displaystyle 6^n$ for part(a) but I'm very muddled over the 2nd part of this question...
Follow Math Help Forum on Facebook and Google+
Originally Posted by DaRush19 (a) How many different outcomes are there from rolling n identical dice? (b) How many of these sequences contain at least one 6? I got $\displaystyle 6^n$ for part(a) ...CORRECT b) $\displaystyle 6^n -5^n$. WHY?
Because $\displaystyle 5^n$ contains no 6's at all. Thanks!
View Tag Cloud