Originally Posted by doe_a_deer:
“What do you mean 120-1?
They get as many guesses as they want, not just one. I believe there are 30 possible options, which in the circumstances, one of them should have been working through. I certainly was when I played the wall beforehand online, and I was playing by myself, not in a team of three.”
Originally Posted by ukcarter:
“The order of the items isn't important so we want combinations, not permutations. Drawing r items from n things has n!/(n-r)!r! combinations so 6!/4!/2! which is (6x5)/2 or 15.”
And this is what is great about DS.
Thank you very much, ukcarter, for explaining the maths ... it was a long time ago for me, and you have educated me!!
As for the other comment, well, that added nothing to my education, but merely to my opinion of the author