The _____ principle is used to find the number of strings of eight uppercase English letters that start or end with the letters BO (in that order), if letters can be repeated.
the answer is found here http://www.regentsprep.org/regents/math/algebra/apr1/Lcount.htm
Ok thanks :) ill take a look at it ^.^
this page might be better because they show a tree of all possibilities http://www.mathsisfun.com/data/basic-counting-principle.html
so its the counting principle?
i just started learning this stuff (first week)
but i get the gist of it :D
`so its the counting principle?` correct
Alright thanks for your time :)
It said it was wrong :/
are you sure it was counting?
i have one more attempt xD
hmm I'm not sure if it's a typo or if it's a computer glitch. But yeah I'm pretty sure it's counting principle. Maybe they are using "multiplication" instead of "counting" ? https://onlinecourses.science.psu.edu/stat414/node/28
it's basically the same idea, just with a different name
ok ill try multiplication ^.^
whish me luck :D